Acetic Anhydrides
Phthalic Anhydrides
Maleic Anhydrides
Succinic Anhydrides
Epoxy Resins
Fluoroacetates
Derivatives of acetic acid with one or more fluorines attached. They are almost odorless, difficult to detect chemically, and very stable. The acid itself, as well as the derivatives that are broken down in the body to the acid, are highly toxic substances, behaving as convulsant poisons with a delayed action. (From Miall's Dictionary of Chemistry, 5th ed)
Diethyl Pyrocarbonate
Trifluoroacetic Acid
Phthalic Acids
Pyran Copolymer
Chemistry
Coenzyme A-Transferases
Chemical Phenomena
Gas Chromatography-Mass Spectrometry
Furans
Rutamycin
Ruminococcus
Molecular Structure
Succinates
Indicators and Reagents
Substances used for the detection, identification, analysis, etc. of chemical, biological, or pathologic processes or conditions. Indicators are substances that change in physical appearance, e.g., color, at or approaching the endpoint of a chemical titration, e.g., on the passage between acidity and alkalinity. Reagents are substances used for the detection or determination of another substance by chemical or microscopical means, especially analysis. Types of reagents are precipitants, solvents, oxidizers, reducers, fluxes, and colorimetric reagents. (From Grant & Hackh's Chemical Dictionary, 5th ed, p301, p499)
Formates
Metals, Rare Earth
A group of elements that include SCANDIUM; YTTRIUM; and the LANTHANOID SERIES ELEMENTS. Historically, the rare earth metals got their name from the fact that they were never found in their pure elemental form, but as an oxide. In addition they were very difficult to purify. They are not truly rare and comprise about 25% of the metals in the earth's crust.
Maleic Hydrazide
Metals, Alkaline Earth
Fructose
Crystallization
Crystallography, X-Ray
X-Ray Diffraction
The scattering of x-rays by matter, especially crystals, with accompanying variation in intensity due to interference effects. Analysis of the crystal structure of materials is performed by passing x-rays through them and registering the diffraction image of the rays (CRYSTALLOGRAPHY, X-RAY). (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Encyclopedias as Topic
Chemistry, Organic
Dictionaries as Topic
Electronic Mail
Messages between computer users via COMPUTER COMMUNICATION NETWORKS. This feature duplicates most of the features of paper mail, such as forwarding, multiple copies, and attachments of images and other file types, but with a speed advantage. The term also refers to an individual message sent in this way.
Editorial Policies
Authorship
Postal Service
Internet
Mutagenicity Tests
Mutagens
Oenanthe
Activity in saline of phthalylated or succinylated derivatives of mycobacterial water-soluble adjuvant. (1/121)
A water-soluble fraction (WSA) of the cell wall can substitute for mycobacterial cells in Freund complete adjuvant. However, when WSA is administered in saline instead of in a water-in-oil emulsion, its adjuvant activity is very weak, and under certain experimental conditions it can even inhibit the humoral immune response. The data reported in the present study show that after treatment by phthalic or succinic anhydride the adjuvant activity of WSA was markedly changed, since high levels of circulating antibodies were produced when these derivatives were administered with an antigen in an aqueous medium. Moreover, the antigenic determinants of WSA were modified and acylated WSA had no tuberculin-like activity. (+info)Prevention of occupational allergy caused by exposure to acid anhydrides. (2/121)
This paper focuses on the prevention of IgE-mediated symptoms of the eyes and airways caused by exposure to acid anhydrides in the workplace. Acid anhydrides are widely used in the production of alkyd resins and as curing agents for epoxy resins. Heavy exposure to acid anhydrides causes severe irritation. However, reports of direct irritation of mucous membranes or skin are rare in recent years, since a package of multiple engineering controls has been introduced to reduce exposure. On the other hand, acid anhydrides are well-known industrial inhalant sensitizers and can cause occupational allergy even at very low exposure intensities. Therefore, safe use in industry demands both control of the level of exposure causing allergic diseases in the workshop and programmes for prevention of occupational allergy. (+info)Mass spectrometric analysis of platelet-activating factor after isolation by solid-phase extraction and direct derivatization with pentafluorobenzoic anhydride. (3/121)
Platelet-activating factor is the term used to denote a class of extremely potent lipid mediators that consist predominantly of 1-O-alkyl- and 1-O-acyl-2-acetyl-sn-glycero-3-phosphocholines. A method has been devised for rapid isolation of these acetylated phospholipids by solid-phase extraction prior to direct derivatization with pentafluorobenzoic anhydride and analysis by gas chromatography (GC)/electron-capture mass spectrometry. Recovery through the entire method (lipid isolation, derivatization, and purification) typically ranged from 70% to 85%. Using the direct derivatization procedure described here, the practical limit of detection for each of the standard alkyl- and acyl-platelet-activating factor homologs was 1 fmol injected into the GC. Results from the application of the method to the analysis of alkyl and acyl homologs of platelet-activating factor isolated from stimulated human umbilical vein endothelial cells are presented, exhibiting excellent accuracy and precision for a wide range of tissue levels of this class of potent autacoids. (+info)GCD quantitation of opiates as propionyl derivatives in blood. (4/121)
We describe a method using a gas chromatograph with electron ionization detection (GCD) for the simultaneous determination of morphine, codeine, 6-monoacetylmorphine, ethylmorphine, and dihydrocodeine in blood. The method employs propionic anhydride in the presence of triethylamine to propionylate free hydroxyl groups of the opiates in blood. The quantitation is achieved by using GCD with selected ion monitoring of the two most characteristic ions for each analyte. The quantitation limit was 0.01 mg/L and the linearity was 0.01-10 mg/L for dihydrocodeine, ethylmorphine, and 6-monoacetylmorphine. For the other investigated opiates, the quantitation limit was 0.025 mg/L and linearity was 0.025-10 mg/L. The intraday relative standard deviation (RSD) varied from 7.2 to 10% at the 0.5 mg/L level, and the day-to-day RSDs varied from 7.5 to 11% at the 0.85 mg/L level. (+info)Risk factors for bronchial hyperresponsiveness in workers exposed to acid anhydrides. (5/121)
Risk factors for bronchial hyperresponsiveness have previously been established in the general community. In settings where occupational asthma is a risk, it has not been established whether occupational sensitization or measures of exposure are important. Bronchial responsiveness to histamine was measured in a cohort of 506 workers exposed to acid anhydrides. Skin-prick tests were performed with conjugates of phthalic, maleic and trimellitic anhydride with human serum albumin and with common inhalant allergens. Employment and smoking histories were recorded. Occupational exposure was measured using personal air samplers and estimates of past exposure made by retrospective exposure assessment. Three hundred and seventy workers (73%) had bronchial responsiveness measured (median age 39 yrs, range 18-77) and 46 (12%) of these were hyperresponsive (provocative dose causing a 20% fall in forced expiratory volume in one second (FEV1; PD20) < or = 8 micromol). Twelve (3%) of these responsive workers had a skin-prick test reaction to an acid anhydride conjugate, 124 (34%) to a common inhalant allergen, and 148 (40%) were current smokers. Multivariate analysis showed that occupational sensitization, sensitization to a common inhalant allergen, age, and pack-years of smoking were independent risk factors for bronchial hyperresponsiveness. Of these only occupational sensitization was completely independent of baseline FEV1. It is concluded that sensitization to acid anhydrides is a significant risk factor for bronchial hyperresponsiveness. However, measures of personal acid anhydride exposure were not associated with bronchial hyperresponsiveness. (+info)New hemisynthetic manoyl oxide derivatives with antimicrobial activity. (6/121)
The synthesis and antimicrobial activity of ten labdane-type diterpenes derived from ent-3-beta-hydroxy-13-epi-manoyl oxide (ribenol) is reported. The chloroethyl carbamidic ester 9 showed the strongest antimicrobial activity against all the tested gram (+), gram (-) bacteria and pathogenic fungi. Moreover, the glycoside 11 exhibited an interesting activity against the three tested fungi. (+info)The chemical modification of alpha-chymotrypsin with both hydrophobic and hydrophilic compounds stabilizes the enzyme against denaturation in water-organic media. (7/121)
We considered alpha-chymotrypsin (CT) in homogeneous water-organic media as a model system to examine the influence of enzyme chemical modification with hydrophilic and hydrophobic substances on its stability, activity and structure. Both types of modifying agents may lead to considerable stabilization of the enzyme in water-ethanol and water-DMF mixtures: (i) the range of organic cosolvent concentration at which enzyme activity (Vm) is at least 100% of its initial value is broadened and (ii) the range of organic cosolvent concentration at which the residual enzyme activity is observed is increased. We found that for both types of modification the stabilization effect can be correlated with the changes in protein surface hydrophobicity/hydrophilicity brought about by the modification. Circular dichroism studies indicated that the effects of these two types of modification on CT structure and its behavior in water-ethanol mixtures are different. Differential scanning calorimetry studies revealed that after modification two or three fractions or domains, differing in their stability, can be resolved. The least stable fractions (or domains) have properties similar to native CT. (+info)Unmasking of histone amino groups in chromatin at high pH. (8/121)
The reactivity of the amino groups of histones in chromatin towards acetic anhydride was determined as a function of pH. In the pH range 7-10 the vast majority of amino groups in all five histones are buried. However, at higher pH values some of the histone amino groups become exposed, and the higher the lysine:arginine ratio for the histone the greater was the degree of unmasking observed. At pH 11.8 histone I appears to be completely dissociated, histones IIB1 and IIb2 have approx. 55% of the amino groups unmasked, and histones III and IV have approx. 25% of the amino groups unmasked. (+info)
Patent US4489056 - Acid anhydrides as rate controlling agent for the erosion of polymers which ... - Google Patents
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CCCC 1989, Volume 54, Issue 10, Abstracts pp. 2738-2747
| Collection of Czechoslovak Chemical Communications
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Acetic acid, anhydride, reaction products with... - PBT assessment list - ECHA
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WHMIS classification for Trimellitic anhydride
- CNESST
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Succinic anhydride
- Astral Scientific
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Freimoser - OpenWetWare
Polyphosphate | Open Access articles | Open Access journals | Conference Proceedings | Editors | Authors | Reviewers |...
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Oxide - New World Encyclopedia
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Designated organic active ingredient containing (doai) > Radical -xh acid, or anhydride, acid halide or salt thereof (x is...
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Epoxy
Anhydrides[edit]. Epoxy resins may be cured with cyclic anhydrides at elevated temperatures. Reaction occurs only after opening ... The low viscosity and high latency of anhydride hardeners makes them suitable for processing systems which require addition of ... Common classes of hardeners for epoxy resins include amines, acids, acid anhydrides, phenols, alcohols and thiols. Relative ... and acid anhydrides), phenols, alcohols and thiols (usually called mercaptans). These co-reactants are often referred to as ...
Ester
Alcoholysis of acyl chlorides and acid anhydrides[edit]. Alcohols react with acyl chlorides and acid anhydrides to give esters ... Since acyl chlorides and acid anhydrides also react with water, anhydrous conditions are preferred. The analogous acylations of ...
Acyl halide
carboxylic acids to form an organic acid anhydrides. In the above reactions, HX (hydrogen halide or hydrohalic acid) is also ... Allen, C. F. H.; Kibler, C. J.; McLachlin, D. M.; Wilson, C. V. (1946). "Acid Anhydrides". Organic Syntheses. 26: 1. doi: ... On an industrial scale, the reaction of acetic anhydride with hydrogen chloride produces a mixture of acetyl chloride and ... acetic acid: (CH3CO)2O + HCl ā CH3COCl + CH3CO2H A key industrial route to propionic anhydride involves thermal dehydration: 2 ...
Polyester
Equilibrium constants of magnitude KC ā„ 104 are achieved when using reactive reactants (acid chlorides or acid anhydrides) or ... or their anhydrides. The double bond of unsaturated polyesters reacts with a vinyl monomer, usually styrene, resulting in a 3-D ... or triļ¬uoroacetic anhydride. The polycondensation proceeds via the in situ conversion of the carboxylic acid into a more ... metallorganically or enzyme-based A number of catalytic methods for the copolymerization of epoxides with cyclic anhydrides ...
Sodium trichloroacetate
... carboxylic acid anhydrides, ketones (making a precursor for the Jocic-Reeve reaction), and acyl halides. Trichloroacetic acid ... "Trichloromethylation of Anhydrides. Ring-Chain Tautomerism". J. Org. Chem. 30 (8): 2784-2787. doi:10.1021/jo01019a068.. ...
Petrochemical
phthalic anhydride. *para-xylene - both methyl groups can be oxidized to form terephthalic acid *dimethyl terephthalate - can ...
Sulfur dioxide
Mellitic anhydride (C12O9). *Praseodymium(III,IV) oxide (Pr6O11) ...
Corrosive substance
Acid anhydrides. *Alkylating agents such as dimethyl sulfate. *Some organic materials such as phenol ("carbolic acid") ...
Oxide
They are called "acid anhydrides"; adding water, they form oxoacids. For example, dichlorine heptoxide is an acid anhydride; ... They are called basic anhydrides. Exposed to water, they may form basic hydroxides. For example, sodium oxide is basic-when ...
Sylvia Stoesser
They were the first to prepare Difructose anhydride I. In July 1928, Wesley Stoesser was hired to work in the Organic Lab at ... McDonald, Emma J. (January 1, 1946). "The Polyfructosans and Difructose Anhydrides". In Pigman, W. W.; Wolfrom, M. L. (eds.). ... Jackson, Richard J.; Goergen, Sylvia M. (1929). "A crystalline difructose anhydride from hydrolized inulin". Bureau of ...
Ralph Landau
Acetic anhydride is mainly produced by the carbonylation of methyl acetate. Acetic anhydride is used industrially for preparing ... In 1955, Scientific Design licensed an improved catalyst for oxidizing benzene to produce maleic anhydride. Maleic anhydride is ... By the 1970s, half of the world's production of maleic anhydride used one of the two processes. In 1959, Scientific Design ... "Maleic anhydride". Huntsman International LLC. Retrieved 6 October 2014. "Propylene Oxidation Looms as Route to Oxide". ...
Phenylboronic acid
The dehydration of boronic acids gives boroxines, the trimeric anhydrides of phenylboronic acid. The dehydration reaction is ... ISBN 3-527-30991-8 Washburn, RM; Levens, E; Albright, CF; Billig, FA (1963). "Benzeneboronic anhydride". Organic Syntheses.; ...
Succinic acid
Dehydration of succinic acid gives succinic anhydride. Succinate can be used to derive 1,4-butanediol, maleic anhydride, ... Succinate is also produced from butane via maleic anhydride. Global production is estimated at 16,000 to 30,000 tons a year, ... Fieser, Louis F.; Martin, E. L. (1932). "Succinic Anhydride". Organic Syntheses. 12: 66. doi:10.15227/orgsyn.012.0066. "Top ...
Anthranilic acid
Industrially it is produced from phthalic anhydride, beginning with amination: C6H4(CO)2O + NH3 + NaOH ā C6H4(C(O)NH2)CO2Na + ... It reacts with phosgene to give isatoic anhydride, a versatile reagent. Chlorination of anthranilic acid gives the 2,4-dichloro ... Wagner, E. C.; Fegley, Marion F. (1947). "Isatoic anhydride". Org. Synth. 27: 45. doi:10.15227/orgsyn.027.0045. Atkinson, ...
Boronic acid
In the second step the hydroxyl group is activated as a leaving group by conversion to a triflate by triflic anhydride aided by ... They are prone to forming anhydrides by loss of water molecules, typically to give cyclic trimers. Boronic acids can be ... Phenylboronic acid can be selfcondensed to the cyclic trimer called triphenyl anhydride or triphenylboroxin. Compounds with 5- ... "Benzeneboronic anhydride". Organic Syntheses. 39: 3.; Collective Volume, 4, p. 68 Chan, Dominic M.T. (2003). "Copper promoted C ...
Dibutyl maleate
... can be prepared by the reaction of maleic acid anhydride and 1-butanol in presence of p-toluenesulfonic acid. ... 22 (1): 78-80.CS1 maint: multiple names: authors list (link) B. Trivedi (2013). Maleic Anhydride. Springer Science & Business ...
Isatin
The oxidation of isatin using hydrogen peroxide or chromic anhydride yields isatoic anhydride, a compound widely used either in ... A direct route to -arylisatoic anhydrides". Journal of Heterocyclic Chemistry. 24 (5): 1249-1251. doi:10.1002/jhet.5570240503. ...
Benzotriyne
There have been a few attempts to synthesize benzotriyne, e.g. by pyrolysis of mellitic anhydride, but without success as of ... Fields, Ellis K.; Meyerson, Seymour (October 1966). "Arynes by Pyrolysis of Acid Anhydrides". J. Org. Chem. 31 (10): 3307-3309 ...
Kathryn Uhrich
Polyaspirine consists of anhydrides and esters that hydrolytically degrade into the active ingredient in aspirin (salicylic ... Rosenberg, L.E.; Carbone, A.L.; Rƶmling, U.; Uhrich, K.E.; Chikindas, M.L. (May 2008). "Salicylic acid-based poly(anhydride ... 2013). Anhydrides-Advances in Research and Application. ISBN 9781481697163. Goldberg, Daniel R. (Summer 2009). "Aspirin: Turn ... These polymers consist of esters, amides and anhydrides, all of which are susceptible to hydrolysis, thus ensuring the ...
Michael reaction
... "β-Methylglutaric anhydride". Organic Syntheses.; Collective Volume, 4, p. 630 Moffett, R. B. (1963). "Methyl γ-Methyl-γ- ...
Acetic acid
"Acetic Anhydride and Mixed Fatty Acid Anhydrides". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi: ... Other substitution derivatives include acetic anhydride; this anhydride is produced by loss of water from two molecules of ... Acetic anhydride is also a reagent for the production of heroin and other compounds. Glacial acetic acid is an excellent polar ... The largest single use of acetic acid is in the production of vinyl acetate monomer, closely followed by acetic anhydride and ...
Actinide
... hexafluorides have properties close to anhydrides. They are very sensitive to moisture and hydrolyze forming AnO2F2. ...
Compounds of oxygen
... acid anhydrides (R-CO-O-CO-R); amides (R-C(O)-NR2). There are many important organic solvents that contain oxygen, among which ... acetic anhydride, acetamide, etc. Epoxides are ethers in which the oxygen atom is part of a ring of three atoms. Oxygen reacts ...
Oxygen
... acetic anhydride, and acetamide. Epoxides are ethers in which the oxygen atom is part of a ring of three atoms. The element is ... acid anhydrides (R-CO-O-CO-R); and amides (R-C(O)-NR 2). There are many important organic solvents that contain oxygen, ...
Alkyl ketene dimer
Related to AKDs, is alkenylsuccinic anhydride (ASA). As for AKDs, ASA reacts with hydroxy groups of the cellulose to form an ... ASA is prepared by the ene reaction of unsaturated hydrocarbons with maleic anhydride. As early as 1901, Edgar Wedekind ... In addition to the significantly more reactive alkenylsuccinic anhydrides (which do also hydrolyze rapidly in the presence of ... doi:10.1002/14356007.o18_o11 Gess, Jerome; Rend, Dominic (2005). "Alkenyl Succinic Anhydride (ASA)". TAPPI Journal. 4: 25-30. ...
Butadiene
It is a partner in Diels-Alder reactions, e.g. with maleic anhydride to give tetrahydrophthalic anhydride. Like other dienes, ... "cis-Ī4-Tetrahydrophthalic Anhydride". Org. Synth. 50: 93. doi:10.15227/orgsyn.030.0093.CS1 maint: uses authors parameter (link ...
Swern oxidation
With cyanuric chloride or trifluoroacetic anhydride instead of oxalyl chloride, the reaction can be warmed to ā30 °C without ... Omura, Kanji; Sharma, Ashok K.; Swern, Daniel (1976). "Dimethyl Sulfoxide-Trifluoroacetic Anhydride. New Reagent for Oxidation ... or acetic anhydride (Albright-Goldman oxidation). The intermediate 4 can also be prepared from dimethyl sulfide and N- ...
Phosphorous
... anhydride, see phosphorus trioxide. See also[edit]. *Phosphorus, the element. .mw-parser-output table.dmbox{clear: ...
Wikipedia:WikiProject Chemicals/Log/2011-03-07
Changed: 'IUPACName' ('Cacodyl oxide' -, 'Dimethylarsinous anhydride', SET 'Cacodyl oxide'). *01:46:57 (5, 5, 5) (EDIT) User: ...
Levan fructotransferase (DFA-IV-forming)
Saito K, Tomita F (2000). "Difructose anhydrides: their mass-production and physiological functions". Biosci. Biotechnol. ... "Characteristics of levan fructotransferase from Arthrobacter ureafaciens K2032 and difructose anhydride IV formation from levan ...
Anhydride | Encyclopedia.com
... the anhydride can also react with water to form the original compound. ... anhydride (Änhī“drÄ«d, -drĬd) [Gr.,=without water], chemical compound formed by removing water, H2O, from another compound; ... Anhydrides of organic acids have many uses. They react with alcohols to form esters; e.g., acetic anhydride, (CH3CO)2O, reacts ... the anhydride can also react with water to form the original compound. An acid anhydride reacts with water to form an acid; e.g ...
Maleic anhydride (2005-110) | NIOSH | CDC
Phthalic anhydride (2005-110) | NIOSH | CDC
Alkenylsuccinic anhydrides - Wikipedia
Alkenyl succinic anhydrides (ASA) are modified five-membered succinic anhydrides bearing a branched iso-alkenyl chain (C14 to ... "Process for reacting an olefin with maleic anhydride to obtain an alkenyl succinic anhydride" US 4158664, C.M. Selwitz, H.I. ... and less dark colored alkenyl succinic anhydride (ASA) were needed. The use of alkenylsuccinic anhydrides to hydrophobize ... Therefore, alkenyl succinic anhydrides can be converted into an emulsion only before the use in the paper machine, while AKD ...
Pentafluoropropionic anhydride
Thiodiglycolic anhydride
The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database ...
Patent US4288372 - Production of maleic anhydride - Google Patents
... for example maleic and phthalic anhydrides, are prepared from a vanadium/phosphorus mixed oxide precursor by conditioning it by ... Catalysts for the oxidation of hydrocarbons to acid anhydrides, ... Process of preparing anhydrides from alkanes. US4153577 *. May ... Catalysts for the oxidation of hydrocarbons to acid anhydrides, for example maleic and phthalic anhydrides, are prepared from a ... Catalysts for the oxidation of hydrocarbons to acid anhydrides, for example maleic and phthalic anhydrides, are prepared from a ...
ICSC 1374 - TETRACHLOROPHTHALIC ANHYDRIDE
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations ...
ICSC 1312 - SUCCINIC ANHYDRIDE
Succinic anhydride - Wikipedia
Industrially, succinic anhydride is prepared by catalytic hydrogenation of maleic anhydride. Succinic anhydride hydrolyzes ... Succinic anhydride, is an organic compound with the molecular formula (CH2CO)2O. This colorless solid is the acid anhydride of ... In this role, the anhydride is proposed to form an ester with the hydroxyl groups on the cellulose fibers. Maleic anhydride ... RO2CCH2CH2CO2H Maleic anhydride undergoes the Alder-ene reaction with alkenes to give alkenylsuccinic anhydrides. Such ...
Patent US4666527 - Continuous crystallization of fructose anhydride - Google Patents
... whereby large and uniform crystals of fructose anhydride can be obtained in an enhanced yield. ... The present invention relates to a process for continuously crystallizing fructose anhydride using a seed crystallization tank ... In the crystallization step of the fructose anhydride, an aqueous fructose solution containing at least 90 W/W %, preferably at ... For the crystallization of fructose anhydride in this example, an aqueous fructose solution separated from an aqueous glucose ...
Trimellitic anhydride (HSG 71, 1992)
71) 1. Phthalic anhydrides - adverse effects 2. Phthalic anhydrides - standards 3. Phthalic anhydrides - toxicity 4. Accidents ... 2-anhydride; 1,2,4-benzenetricarboxylic anhydride; 4-carboxyphthalic anhydride; 1,3-dioxo-5-phthalancarboxylic acid; 5- ... TRIMELLITIC ANHYDRIDE (1,2,4-benzenetricarboxylic acid 1,2-anhydride; 4-carboxyphthalic anhydride; 1,3-dioxo-5- ... Hydrolysis of the anhydride was not checked during the study. Trimellitic anhydride can thus be considered as readily ...
Anhydride Monomers - Monomers | Sigma-Aldrich
Anhydrides are also used to make cross-linked, network polymer resins; additional anhydrides commonly used for this application ... Unsaturated anhydrides undergo additional polymerization, usually with styrene, acrylics, and vinyl ethers. ... Anhydrides are very versatile as they can undergo condensation reactions to give polyesters, -imides, -ester-amides, and -ester ... Anhydrides are also used to make cross-linked, network polymer resins; additional anhydrides commonly used for this application ...
Acetic anhydride - Wikipedia
"Acid Anhydrides", Understanding Chemistry, retrieved 2006-03-25. . *^ Shakhashiri, Bassam Z., "Acetic Acid & Acetic Anhydride" ... Acetic anhydride, or ethanoic anhydride, is the chemical compound with the formula (CH3CO)2O. Commonly abbreviated Ac2O, it is ... Acetic anhydride, like most acid anhydrides, is a flexible molecule with a nonplanar structure.[3] The pi system linkage ... Like most acid anhydrides, the carbonyl carbon of acetic anhydride has electrophilic character, as the leaving group is ...
Acetic anhydride - definition of acetic anhydride by The Free Dictionary
acetic anhydride synonyms, acetic anhydride pronunciation, acetic anhydride translation, English dictionary definition of ... acetic anhydride. n a colourless pungent liquid used in the manufacture of cellulose and vinyl acetates for synthetic fabrics. ... aceā²tic anhyā²dride. n. a colorless, pungent liquid, C4H6O3, the anhydride of acetic acid: used chiefly as a reagent and in the ... Related to acetic anhydride: acetic acid. acetic anhydride. n (Elements & Compounds) a colourless pungent liquid used in the ...
Plus it
SPECTRUM Acetic Anhydride, 500ml - 26XH54|A1668-500ML - Grainger
IUPAC - acid anhydrides (A00072)
Sedoheptulose anhydride monohydrate | Sedoheptulosan | Sigma-Aldrich
Maleic anhydride | C4H2O3 | ChemSpider
4-Nitrophthalic anhydride 5466842
2016 Global Tri-Mellitic-Anhydride(TMA)Industry Review: Reportstack
Global Tri-Mellitic-Anhydride(TMA)Industry 2016 Market Research Report āis a new market research publication announced by ... The Tri-Mellitic-Anhydride (TMA) market analysis is provided for the international market including development history, ... To view the table of contents and know more details please visit Global Tri-Mellitic-Anhydride(TMA)Industry 2016 Market ... 8 Major Manufacturers Analysis of Tri-Mellitic-Anhydride (TMA) 8.1 FHR 8.1.1 Company Profile 8.1.2 Product Picture and ...
The 2021-2026 World Outlook for Phthalic Anhydrides
This study covers the world outlook for phthalic anhydrides across more than 190 countries. For each year reported, estimates ... In order to estimate the latent demand for phthalic anhydrides on a worldwide basis, I used a multi-stage approach. Before ... Based on the aggregate view of phthalic anhydrides as defined above, data were then collected for as many similar countries as ... In particular, we are considering the latent demand for phthalic anhydrides across some 190 countries.. The smallest have fewer ...
Maleic anhydride - Substance Information - ECHA
Succinic anhydride - Registration Dossier - ECHA
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice ...
Succinic anhydride - Registration Dossier - ECHA
Maleic-Anhydride Markets in China
Valeric anhydride - Registration Dossier - ECHA
EWG Skin DeepĀ® | What is ADIPIC ACID/ NEOPENTYL GLYCOL/ TRIMELLITIC ANHYDRIDE COPOLYMER
TRIMELLITIC ANHYDRIDE, NEOPENTYL GLYCOL POLYESTER RESIN; ADIPIC ACID, TRIMELLITIC ANHYDRIDE, NEOPENTYL GLYCOL POLYMER; ADIPIC ... TRIMELLITIC ANHYDRIDE COPOLYMER, ADIPIC ACID/NEOPENTYL GLYCOL/TRIMELLITIC ANHYDRIDE COPOLYMER, HEXANEDIOIC ACID, POLYMER WITH 1 ... ADIPIC ACID/ NEOPENTYL GLYCOL/ TRIMELLITIC ANHYDRIDE COPOLYMER. image source: PubChem. Click here for all products containing ... Adipic Acid/Neopentyl Glycol/Trimellitic Anhydride Copolymer is a copolymer of adipic acid, neopentyl glycol and trimellitic ...
Trimellitic anhydrideSuccinicCompoundsPhthalic anhydridesGlacial acetPropionicCopolymerInclude maleic anhydrideDiene and maleic anhydrideReacts exothermically with waterDerivativesAcid and its anhydrideEstersMethylPhosphoric AcidConverted to maleicChemicalsReactionAcetateMaleic acidReactions2018AcetylCarboxylic acidTetrahydrophthalicStyreneAlkenylsuccinic anhydridesOrganicBenzeneReagentsBasic anhydrideAcetic AnhydridesCitraconic anhydrideTrifluoroacetic anhydrideMethyltetrahydrophthalic anhydride2016CatalystsAminesMixed oxideForecastMTHPAYieldPolymersCalcium hydroxideDerived from butaneChemical
Trimellitic anhydride9
- Adipic Acid/Neopentyl Glycol/Trimellitic Anhydride Copolymer is a copolymer of adipic acid, neopentyl glycol and trimellitic anhydride monomers. (ewg.org)
- The excess of HLA-DR3 was particularly associated with IgE versus trimellitic anhydride, with HLA-DR3 present in eight of 11 workers with and in two of 14 referents without IgE (Fisher's statistic = 8.5, odds ratio = 16, p = 0.004). (nih.gov)
- Trimellitic anhydride is mainly applied to produce good heat-proof, weather-proof and solvent-proof trimellitate plasticizers, among which the most popular product is tri(2-ethylhexyl)trimellitate. (lookchem.com)
- Trimellitic Anhydride is mainly used as raw material for polyester resin,polyimide resin,plasticizer TOTM ,and also be used for producing heatproof & insulating,adhesive,surfactant, paint,synthesize dye materials etc. (lookchem.com)
- Trimellitic anhydride is used as an embossing agent for vinyl flooring and as a curing agent for epoxy resins. (lookchem.com)
- ā²1. Bernstein, D.I., Patterson, R. et Zeiss, C.R., Ā«Clinical and immunologic evaluation of trimellitic anhydride and phthalic anhydride exposed workers using a questionnaire with comparative analysis of enzyme-linked immunosorbent and radioimmunoassay studies. (csst.qc.ca)
- The relationship of total serum IgE and blocking antibody in trimellitic anhydride-induced occupational asthma. (csst.qc.ca)
- Syndromes in workers exposed to trimellitic anhydride. (csst.qc.ca)
- A clinical and immunologic study of employees in a facility manufacturing trimellitic anhydride. (csst.qc.ca)
Succinic16
- Alkenyl succinic anhydrides (ASA) are modified five-membered succinic anhydrides bearing a branched iso-alkenyl chain (C14 to C22). (wikipedia.org)
- The excess alkene is removed by distillation in vacuo, the resulting alkenyl succinic anhydride hydrolyzed with dilute sodium hydroxide solution and the disodium salt reacted with an acid to achieve an alkenebutanedioic acid. (wikipedia.org)
- 30% higher reaction yields were achieved with a pre-cleaned cracked petroleum distillate in an autoclave at 210 °C and it was found that the hydrolysis of the succinic anhydride can already be carried out with steam. (wikipedia.org)
- However, for later use in cleaners and detergents, clear (meaning polymer-free) and less dark colored alkenyl succinic anhydride (ASA) were needed. (wikipedia.org)
- The use of alkenylsuccinic anhydrides to hydrophobize cellulose-based (cotton) textiles (first patented in 1959) and the transfer of this concept to the hydrophobization of paper using iso-octadecenyl succinic anhydrides (C18-ASA) in 1963 required liquid, particle-free colours with a colour as light as possible. (wikipedia.org)
- After initial difficulties in using ASA for paper sizing (particularly the rapid hydrolysis to alkenyl succinic acids and the formation of poorly soluble calcium salts in hard water and deposits in the paper machine), process parameters could be adjusted to make alkenyl succinic anhydrides the most important sizing agents in the US. (wikipedia.org)
- Succinic anhydride, is an organic compound with the molecular formula (CH2CO)2O. (wikipedia.org)
- This colorless solid is the acid anhydride of succinic acid. (wikipedia.org)
- Industrially, succinic anhydride is prepared by catalytic hydrogenation of maleic anhydride. (wikipedia.org)
- Succinic anhydride hydrolyzes readily to give succinic acid: (CH2CO)2O + H2O ā (CH2CO2H)2 With alcohols (ROH), a similar reaction occurs, delivering the monoester: (CH2CO)2O + ROH ā RO2CCH2CH2CO2H Maleic anhydride undergoes the Alder-ene reaction with alkenes to give alkenylsuccinic anhydrides. (wikipedia.org)
- This experiment involved a reaction between anthracene and maleic anhydride via a Diels Alder reaction to yield 9, 10-dihydroanthracene-9,10-α, β-succinic anhydride. (bartleby.com)
- Furthermore, rapid use of bio-based succinic acid as a substitute to maleic anhydride may also pose a major threat to the growth of global maleic anhydride market. (mynewsdesk.com)
- A novel adsorbent based on peanut shells modified with glutaraldehyde and succinic anhydride was prepared. (scirp.org)
- Li, L. , Sun, X. and Li, B. (2012) Adsorption of cytochrome c by succinic anhydride-modified peanut shells. (scirp.org)
- Chemical Database: Amines, Polyethylenepoly-, Reaction Products With Succinic Anhydride Polybutenyl Derivs. (environmentalchemistry.com)
- The purpose of this experiment is to form 9,10-dihydroanthracene-9,10-α,β-succinic anhydride by way of a Diels Alder reaction between anthracene and maleic anhydride, as shown in the reaction below. (vernier.com)
Compounds3
- It refers to an acidic anhydride of maleic acid which is generally colorless as compared to white organic compounds and is a versatile chemical intermediate which is widely used to furnish important chemicals such as tetrahydrofuran, 1,4-butanediol and gamma-butyrolactone among others. (mynewsdesk.com)
- A group of enzymes that catalyze the hydrolysis of diphosphate bonds in compounds such as nucleoside di- and tri-phosphates, and sulfonyl-containing anhydrides such as adenylylsulfate. (curehunter.com)
- Maleic anhydride was traditionally manufactured by the oxidation of benzene or other aromatic compounds. (steunmijnclub.nl)
Phthalic anhydrides7
- Catalysts for the oxidation of hydrocarbons to acid anhydrides, for example maleic and phthalic anhydrides, are prepared from a vanadium/phosphorus mixed oxide precursor by conditioning it by contact with a strong acid of concentration at least 3N and solvent extraction to remove unwanted phases. (google.com)
- Phthalic anhydrides - adverse effects 2. (inchem.org)
- Phthalic anhydrides - standards 3. (inchem.org)
- Phthalic anhydrides - toxicity 4. (inchem.org)
- This study covers the world outlook for phthalic anhydrides across more than 190 countries. (reportlinker.com)
- This study gives, however, my estimates for the worldwide latent demand, or the P.I.E., for phthalic anhydrides. (reportlinker.com)
- In order to estimate the latent demand for phthalic anhydrides on a worldwide basis, I used a multi-stage approach. (reportlinker.com)
Glacial acet2
- For example, flammable liquids (acetone and the alcohols such as ethanol, methanol, isobutanol and t-butanol) are given high hazard ratings while glacial acetic acid, acetic anhydride and adipoyl chloride whose hazard lies in the inhalation of the vapour are given medium ratings. (thefreedictionary.com)
- Acetone is pyrolyzed with a catalyst in an electrically heated glass tube and the product is dissolved in glacial acetic acid to produce acetic anhydride. (sciencemadness.org)
Propionic3
- Propionic anhydride was previously used in the preparation of α- and β-1-propionyl derivatives of glucopyranose tetra-acetate. (lookchem.com)
- Propionic anhydride reacts exothermically with water. (lookchem.com)
- Propionic anhydride can be synthesized by dehydration of propanoic acid using ketene. (lookchem.com)
Copolymer4
- This work describes the preparation, characterization and evaluation of the nanoparticles formed by the copolymer of methyl vinyl ether and maleic anhydride (Gantrez) AN) and cyclodextrins, including beta-cyclodextrin (CD) hydroxypropyl-beta-cyclodextrin (HPCD) and 6-monodeoxy-6-monoamino-beta-cyclodextrin (NHCD). (cun.es)
- A new amphiphilic comb-shaped copolymer (SP) was synthesized by conjugating poly(styrene-co-maleic anhydride) with low molecular weight polyethyleneimine for gene delivery. (dovepress.com)
- Facile immobilization of horseradish peroxidase ( HRP ) and glucose oxidase ( GOX ) was achieved on electrospun nanofibres made of an alternating copolymer of styrene ( Sty ) and maleic anhydride ( MAh ). (rsc.org)
- Based on the method of RAFT mini-emulsion polymerization, the styrene/butyl acrylate block copolymer (SMA-SBAS) was successfully synthesized, mediated by maleic anhydride/styrene alternating copolymer (SMA) as the amphiphilic macroRAFT agent5-7. (aiche.org)
Include maleic anhydride2
- Other important acid anhydrides include maleic anhydride and phthalic anhydride. (encyclopedia.com)
- Key market players in the global maleic anhydride market include maleic anhydride Polynt S.p.A, Nippon Shokubai Co., Ltd., Zhejiang Jiangshan Chemical Co., Ltd., Huntsman International LLC, Changzhou Yabang Chemical Co., Ltd., and Flint Hills Resources. (sbwire.com)
Diene and maleic anhydride2
- Anthracene was the diene and maleic anhydride was the dienophile. (bartleby.com)
- Anthracene acts as the diene and maleic anhydride functions as the dienophile. (vernier.com)
Reacts exothermically with water1
- 1,2,4-Benzenetricarboxylic anhydride reacts exothermically with water. (lookchem.com)
Derivatives5
- PLA-terminated sebacic acid polymers were synthesized by melt condensation of the acetate anhydride derivatives of PLA oligomers and sebacic anhydride oligomers to yield ABA triblock copolymers of molecular weights between 3000 and 9000 that melt at temperatures between 35 and 80 degrees C. Pairs of the corresponding enantiomeric ABA copolymers composed of l-PLA-PSA-l-PLA and d-PLA-PSA-d-PLA were solvent mixed to form stereocomplexes. (biomedsearch.com)
- Long-āchain derivatives of citraconic anhydride: new metabolites of Aspergillus wentii Wehmer. (aspergillus.org.uk)
- Abstract Isopropylthioxanthone is a popular cosynergist for Type II and three-component photoinitiators used to photopolymerize ultraviolet (UV) curable coatings and can be used in the presence of maleic anhydride derivatives to efficiently cure coatings used in numerous applications. (thefreelibrary.com)
- When considering the excited triplet state energies of both ITX and maleic anhydride derivatives (64 and 72 kcal/mol, respectively), photosensitization is highly unlikely since an energy transfer fronot m a lower energy to a higher energy is not thermodynamically favored (2). (thefreelibrary.com)
- Acid anhydrides are the second most reactive of the carboxylic acid derivatives and can therefore, be fairly readily converted into the other less reactive carboxylic acid derivatives (see above). (ucalgary.ca)
Acid and its anhydride1
- The infrared and nmr spectral properties of the acid and its anhydride are discussed. (dtic.mil)
Esters1
- Research and Markets ( http://www.researchandmarkets.com/research/2b22nm/acetic_acid ) has announced the addition of the 'Acetic Acid Market For VAM, PTA, Acetate Esters, Acetic Anhydride And Other Applications - Forecast to 2018' report to their offering. (prnewswire.co.uk)
Methyl4
- The Tennessee Eastman acetic anhydride process involves the conversion of methyl acetate to methyl iodide and an acetate salt. (wikipedia.org)
- Workers from 2 condenser plants using epoxy resin with methyl tetrahydrophthalic anhydride (MTHPA) underwent a questionnaire survey and serology investigations. (ilo.org)
- 3. A no-flow underfill material as claimed in claim 1 , wherein said organic carboxylic acid anhydride hardener is selected from the group consisting of hexahydrophthalic anydride, methyl hexahydrophthalic anhydride, and mixtures thereof. (google.com.au)
- One of these systems includes isopropylthioxanthone (ITX), 2,3-dimethyl maleic anhydride (DMMA), and N-methyl-N,N-diethanolamine (MDEA) (4). (thefreelibrary.com)
Phosphoric Acid2
- Catalysts for the oxidation of hydrocarbons to maleic anhydride have been made by reacting a vanadium compound with phosphoric acid in an acid solution, evaporating to dryness to give a vanadium/phosphorus mixed oxide catalyst precursor and activating the catalyst by heat treatment. (google.com)
- Direct benzoylation of the two hydroxyl groups on chitosan was achieved using a phosphoryl mixed anhydride system, derived from trifluoroacetic anhydride (TFAA), benzoic acids (BAs), and phosphoric acid (PA). (mdpi.com)
Converted to maleic2
- In processes in which the product gas after recovery of maleic anhydride is vented or burned it is important, therefore, that the pass yield should be high, i.e. that the proportion of the hydrocarbon converted to maleic anhydride on a single pass should be as high as possible. (google.com)
- 5-Hydroxymethylfurfural (HMF) was converted to maleic anhydride in 52% yield via selective oxidation with molecular oxygen using VO(acac)2 as catalyst in liquid phase. (steunmijnclub.nl)
Chemicals2
- Over 25 years of reporting on key chemicals markets, including Maleic anhydride, has brought global recognition of our methodology as being unbiased, authoritative and rigorous in preserving our editorial integrity. (icis.com)
- It turns out that there's another synthesis route to acetic anhydride that requires more equipment but uses more accessible chemicals. (sciencemadness.org)
Reaction10
- The reaction of maleic anhydride (MAN) with aliphatic monounsaturated n- and iso-alkenes was described as early as 1936 in a patent. (wikipedia.org)
- The patent describes the reaction of the alkenes with excess maleic anhydride at 200 °C in an autoclave. (wikipedia.org)
- Thereby, a quantitative reaction of the maleic anhydride can be achieved. (wikipedia.org)
- Maleic anhydride undergoes a similar reaction with polyisobutylene to give polyisobutylenylsuccinic anhydride, a common building block chemical in the petroleum additives industry. (wikipedia.org)
- To a decreasing extent, acetic anhydride is also prepared by the reaction of ketene ( ethenone ) with acetic acid at 45-55 °C and low pressure (0.05-0.2 bar). (wikipedia.org)
- Cyclodehydration was accomplished by adding acetic anhydride and fused sodium acetate (22.1 ml and 0.02 g, respectively, per mol of water condensed to the reaction solution and heating at 90 [degrees] C for 0.5h). (thefreedictionary.com)
- What is the reaction between acetic anhydride and water? (reference.com)
- Acetic anhydride is highly reactive to water, and this reaction becomes especially dangerous when mineral acids, such as nitric or sulphuric acid, are present. (reference.com)
- In initial experiments the extent of reaction between tryptophan and acetic anhydride was examined and product amounts quantitated by CE. (biomedsearch.com)
- For example, the reaction of acetic anhydride with ethanol yields ethyl acetate: (CH 3 CO) 2 O + CH 3 CH 2 OH ā CH 3 CO 2 CH 2 CH 3 + CH 3 COOH. (hmdb.ca)
Acetate3
- e.g., acetic anhydride, (CH 3 CO) 2 O, reacts with ethanol, C 2 H 5 OH, to form ethyl acetate, CH 3 COOC 2 H 5 , a useful solvent. (encyclopedia.com)
- Acetic anhydride was first synthesized in 1852 by the French chemist Charles FrƩdƩric Gerhardt (1816-1856) by heating potassium acetate with benzoyl chloride . (wikipedia.org)
- Celanese has informed employee delegates in Roussillon, France, and work council in Tarragona, Spain, of contemplated closures of the Roussillon acetic anhydride facility and the vinyl acetate monomer (VAM) production unit in Tarragona. (hydrocarbonprocessing.com)
Maleic acid4
- Maleic anhydride acts as a vital component of food preservatives, gelling agents and flavor enhancers by converting the maleic anhydride into fumaric acid and maleic acid. (mynewsdesk.com)
- In industry, maleic acid is derived by hydrolysis of maleic anhydride, the latter being produced by oxidation of benzene or butane. (steunmijnclub.nl)
- It is the acid anhydride of maleic acid and in its pure state is a colorless or white solid with an acrid odor. (steunmijnclub.nl)
- Maleic anhydride (butenedioic anhydride, toxilic anhydride, 2,5- dioxofuran ) is an organic compound with the formula C 2 H 2 (CO) 2 O. It is the acid anhydride of maleic acid and in its pure state it is a colourless or white solid with an acrid odour. (steunmijnclub.nl)
Reactions3
- Anhydrides are very versatile as they can undergo condensation reactions to give polyesters, -imides, -ester-amides, and -ester-imides. (sigmaaldrich.com)
- Acetic anhydride also produces violent reactions when mixed with boric acid, ethanol and methanol. (reference.com)
- The anhydrides reactions are also discussed. (dtic.mil)
20182
- Pivalic anhydride (CAS 1538-75-6) Market Research Report 2018 contents were prepared and placed on the website in March, 2018. (marketpublishers.com)
- Please note that Pivalic anhydride (CAS 1538-75-6) Market Research Report 2018 is a half ready publication and contents are subject to change. (marketpublishers.com)
Acetyl3
- Acetic anhydride is a versatile reagent for acetylations , the introduction of acetyl groups to organic substrates. (wikipedia.org)
- Acetic anhydride, also called acetyl ether or ethanoic anhydride, is a compound with the chemical formula C4H6O3 and a molecular weight value of 102.08. (reference.com)
- of modified food starch and for acetylation of monoglycerides Acetic anhydride is a versatile reagent for acetylations, the introduction of acetyl groups to organic substrates. (hmdb.ca)
Carboxylic acid3
- Acetic anhydride , or ethanoic anhydride , is the chemical compound with the formula (CH 3 CO) 2 O. Commonly abbreviated Ac 2 O, it is the simplest isolable anhydride of a carboxylic acid and is widely used as a reagent in organic synthesis . (wikipedia.org)
- Heating in vacuum shifts the equilibrium as about 80% of the carboxylic acid groups transform to the anhydrides. (rsc.org)
- An epoxy material suitable for no-flow underfilling processes with high glass transition temperature can be obtained by curing a solvent free formulation containing an epoxy resin, an organic carboxylic acid anhydride hardener, a curing accelerator, a fluxing agent, a viscosity controlling agent, a coupling. (google.com.au)
Tetrahydrophthalic1
- China's demand for Tetrahydrophthalic Anhydride (THPA) has grown at a fast pace in the past decade. (marketpublishers.com)
Styrene3
- Styrene Maleic Anhydride is a tricky polymer that I've been researching over the last few days. (physicsforums.com)
- Styrene and maleic anhydride can be copolymerized in a number of ways that greatly change the resulting polymer. (physicsforums.com)
- Try visualizing the styrene polymer, first and then see how one maleic anhydride can disrupt that regular polymer coil. (physicsforums.com)
Alkenylsuccinic anhydrides2
- In the United States alkenylsuccinic anhydrides are the preferred paper sizing agents, whereas in Europe, alkyl ketene dimers (AKDs) predominate. (wikipedia.org)
- Unbranched 1-alkenylsuccinic anhydrides, which can be obtained from 1-alkenes, are solid at room temperature and not suited for engine sizing from aqueous emulsion. (wikipedia.org)
Organic7
- Anhydrides of organic acids have many uses. (encyclopedia.com)
- Ocular and airway symptoms related to organic acid anhydride exposure--a prospective study. (nih.gov)
- Organic acid anhydrides (OAA) are used as hardeners in epoxy resin systems. (nih.gov)
- Maleic anhydride is the organic compound which is the maleic acid's acid anhydride. (sbwire.com)
- it is an colorless acid anhydride that is widely used as a reagent in organic synthesis. (lookchem.com)
- Acetic anhydride is the chemical compound with the formula (CH 3 CO) 2 O. Commonly abbreviated Ac 2 O, it is one of the simplest acid anhydrides and is a widely used reagent in organic synthesis. (hmdb.ca)
- TCC's Maleic Anhydride is an organic compound with the formula C2H2(CO)2O. (steunmijnclub.nl)
Benzene4
- Maleic anhydride is primarily manufactured using feed stocks including benzene and n-butane of which the production of maleic anhydride from n-butane accounts for a significant share as compared to benzene. (mynewsdesk.com)
- On the basis of raw material, the global maleic anhydride market can be segmented into N-butane and benzene. (mynewsdesk.com)
- Maleic anhydride is extracted from feedstock such as benzene and n-butane. (sbwire.com)
- I know the bond angles inside the benzene are 120 degrees, and the Carbon attached to the benzene ring attaches at a 120 degree angle, but what of the anhydride ring, or the other carbons? (physicsforums.com)
Reagents1
- Dehydration of the acid with P4O10 proceeds smoothly to give good yields of the anhydride, ((CF3)2P(S))2O, which is extremely inert toward electrophilic reagents such as hydrogen halides and hydrogen sulfide. (dtic.mil)
Basic anhydride1
- What is an example of a basic anhydride? (reference.com)
Acetic Anhydrides3
- Acetic Anhydrides" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings) . (umassmed.edu)
- This graph shows the total number of publications written about "Acetic Anhydrides" by people in this website by year, and whether "Acetic Anhydrides" was a major or minor topic of these publications. (umassmed.edu)
- Below are the most recent publications written about "Acetic Anhydrides" by people in Profiles. (umassmed.edu)
Citraconic anhydride5
- Citraconylation by citraconic anhydride provides an easy method for the reversible blocking of protein amino groups. (ihcworld.com)
- Pre-heat steamer or water bath with staining dish containing Citraconic Anhydride Buffer until temperature reaches 95-100 ° C. (ihcworld.com)
- Since citraconic anhydride is considered a toxic agent, it is necessary to use a hood and to prevent contact with skin and eyes when performing the AR procedure, although the concentration needed was very low. (ihcworld.com)
- 1. Namimatsu S, Ghazizadeh M and Sugisaki Y (2005) Reversing the effects of formalin fixation with citraconic anhydride and heat: a universal antigen retrieval method. (ihcworld.com)
- We provide independent and unbiased information on manufacturers, prices, production news and consumers for the global and regional (North America, Asia and Europe) market of Citraconic anhydride. (reportsnreports.com)
Trifluoroacetic anhydride23
- Trifluoroacetic Anhydride Market report contains all study material about overview, growth, demand and forecast research report in all over the world. (beforeitsnews.com)
- This report offers some penetrating overview and solution in the complex world Trifluoroacetic Anhydride Market in global market. (beforeitsnews.com)
- In depth analysis of Trifluoroacetic Anhydride Market is a crucial thing for various stakeholders like investors, CEOs, traders, suppliers and others. (beforeitsnews.com)
- The Trifluoroacetic Anhydride Market research report is a resource, which provides technical and financial details of the industry. (beforeitsnews.com)
- To begin with, the report elaborates the Trifluoroacetic Anhydride Market overview. (beforeitsnews.com)
- Present day status of the Trifluoroacetic Anhydride Industry in key regions is stated and industry policies and news are analysed. (beforeitsnews.com)
- Next part of the Trifluoroacetic Anhydride Market analysis report speaks about the manufacturing process. (beforeitsnews.com)
- After the basic information, the Trifluoroacetic Anhydride Market report sheds light on the production. (beforeitsnews.com)
- Also, the Trifluoroacetic Anhydride Market growth in various regions and R&D status are also covered. (beforeitsnews.com)
- Which manufacturing technology is used for Trifluoroacetic Anhydride? (beforeitsnews.com)
- Who are the global key players in this Trifluoroacetic Anhydride industry? (beforeitsnews.com)
- What was global and chines market status of Trifluoroacetic Anhydride industry? (beforeitsnews.com)
- What was capacity, production value, cost and profit of Trifluoroacetic Anhydride industry? (beforeitsnews.com)
- What is current market status of Trifluoroacetic Anhydride industry? (beforeitsnews.com)
- What's market analysis of Trifluoroacetic Anhydride industry by taking applications and types in consideration? (beforeitsnews.com)
- What are projections of global and chines Trifluoroacetic Anhydride industry considering capacity, production and production value? (beforeitsnews.com)
- What is Trifluoroacetic Anhydride industry chain analysis by upstream raw materials and downstream industry? (beforeitsnews.com)
- What is economic impact on Trifluoroacetic Anhydride industry? (beforeitsnews.com)
- What are market dynamics of Trifluoroacetic Anhydride industry? (beforeitsnews.com)
- what should be entry strategies, countermeasures to economic impact, marketing channels for Trifluoroacetic Anhydride market? (beforeitsnews.com)
- Further in the Trifluoroacetic Anhydride Market Analysis report, the Trifluoroacetic Anhydride Industry is examined for price, cost and gross. (beforeitsnews.com)
- The Trifluoroacetic Anhydride Market consumption for major regions is given. (beforeitsnews.com)
- To provide information on competitive landscape, this report includes detailed profiles of Trifluoroacetic Anhydride Market key players. (beforeitsnews.com)
Methyltetrahydrophthalic anhydride1
- Diglycidyl ether of bisphenol A (DGEBA) and epoxidized soybean oil (ESO) were crosslinked using methyltetrahydrophthalic anhydride (MTHPA) as a curing agent and 1-methylimidazole (1MI) as an initiator. (hindawi.com)
20161
- Global Tri-Mellitic-Anhydride(TMA)Industry 2016 Market Research Report āis a new market research publication announced by Reportstack. (pitchengine.com)
Catalysts2
- This invention relates to the production of acid anhydrides especially maleic anhydride and catalysts therefor. (google.com)
- It is an object of this invention to provide catalysts for the oxidation of hydrocarbons to maleic anhydride which possess an acceptable selectivity as judged in the case of a "fuel lean" system by the pass yields obtainable with them under suitable conditions and in the case of a "fuel rich" system by the selectivities based on the hydrocarbon consumed at an acceptable conversion under suitable conditions. (google.com)
Amines3
- Finally, on-column derivatization of alkylamines with phthalic anhydride was investigated and electrophoretic mobility related to molecular weight of the derivatized amines. (biomedsearch.com)
- Some of these systems use maleic anhydride (MA) derivations or maleimides (made from maleic anhydrides), tertiary amines, and an UV absorbent cosynergist (3). (thefreelibrary.com)
- In these conversions, acetic anhydride is viewed as a source of CH 3 CO + . Alcohols and amines are readily acetylated. (hmdb.ca)
Mixed oxide1
- 1. A process of oxidizing butane, a butene or a mixture of butane and a butene to maleic anhydride by contacting it in the vapor phase and in the presence of oxygen with a catalyst which consists essentially of a vanadium/phosphorous mixed oxide having a surface area greater than 10 m 2 /g and lanthanum as a promoter. (google.com)
Forecast2
- In addition, rising use of maleic anhydride along with bio-based feed stock polymers is expected to accelerate the growth of global maleic anhydride market over forecast period. (mynewsdesk.com)
- This report studies the global Acetic Anhydride market status and forecast, categorizes the global Acetic Anhydride market size (value & volume) by key players, type, application, and region. (sbwire.com)
MTHPA1
- As a result, an excess of anhydride improves the final thermal properties of the ESO/MTHPA/1MI network, contrary to the behavior observed for DGEBA/MTHPA/1MI. (hindawi.com)
Yield4
- It is important that the catalyst should have a high selectivity, that is that the yield of maleic anhydride should be as high as possible based on the hydrocarbon consumed in the process. (google.com)
- If any unconverted hydrocarbon is recycled it is desirable that a high pass yield should be achieved in order to avoid recycling an unduly high proportion of the hydrocarbon but the selectivity in terms of the yield of maleic anhydride based on the hydrocarbon consumed in each pass is relatively more important. (google.com)
- The present invention can realize the crystallization at a low temperature of 40 to 50 C. or below and prevents the decomposition and the polymerization of fructose which often occur above 50 C. by mixing an aqueous fructose solution and a great deal of crystals at a high speed, whereby large and uniform crystals of fructose anhydride can be obtained in an enhanced yield. (google.com)
- In separate experiments a series of amino acids and peptides were injected into the capillary and reacted with phthalic anhydride on-column to yield the phthalic derivatized species. (biomedsearch.com)
Polymers1
- Increasing popularity of using the maleic anhydride with the feedstock polymers that are bio-based is positively impacting the market. (sbwire.com)
Calcium hydroxide1
- For instance, the anhydride calcium oxide forms calcium hydroxide. (reference.com)
Derived from butane1
- Maleic anhydride (MA) is derived from butane in the US. (icis.com)
Chemical5
- Specialists attempt to assess the true volume of opium production of the region from the recorded seizures of acetic anhydride , the chemical used in heroin manufacture. (thefreedictionary.com)
- ICIS provides pricing information, news and analysis for all major petrochemical and chemical markets, including Maleic anhydride. (icis.com)
- ICIS collects pricing data on a wide range of chemical, energy and fertilizer products, including Maleic anhydride. (icis.com)
- These new insights into graphene chemistry enable us to develop a simple, straight-forward chemical functionalisation protocol for graphene making use of the anhydrides. (rsc.org)
- Chemical Properties: Maleic anhydride is colorless needles, white lumps, or pellets. (steunmijnclub.nl)