Molecular weight 2 using aromatic compounds. Medical search. Frequent questions

Exposures to benzene (71432), toluene (108883), xylene (1330207), and the aromatic amines were well below OSHA limits. (cdc.gov)
1-bromo-2-(4-bromophenyl)benzene is an aromatic compound of the halobenzene family, commonly used in the synthesis of pharmaceuticals, dyes and other organic compounds. (codchem.com)
The structure of 1-bromo-2-(4-bromophenyl)benzene consists of a benzene ring with two bromine atoms connected to the fourth and sixth carbon atoms. (codchem.com)
1-bromo-2-(4-bromophenyl)benzene is mainly used in the synthesis of pharmaceuticals, dyes, and other organic compounds. (codchem.com)
1-bromo-2-(4-bromophenyl)benzene is an important intermediate in the production of various organic compounds. (codchem.com)
1-bromo-2-(4-bromophenyl)benzene is also used as a flame retardant in the manufacture of certain plastics, as well as in the production of certain synthetic rubbers. (codchem.com)
1-bromo-2-(4-bromophenyl)benzene is a hazardous material and should be handled with extreme caution. (codchem.com)
Hydroquinone is an aromatic organic compound that is a type of phenol, and a derivative of benzene. (camlinfs.com)
Benzene was the most abundant aromatic compound identified. (iyte.edu.tr)
They may be grouped further into aliphatic-chain compounds, such as n -hexane, and as aromatic compounds with a 6-carbon ring, such as benzene or xylene. (medscape.com)
Gasoline vapors contain about 90% alkanes and 2% aromatics (0.9% benzene). (cdc.gov)

JP-5, JP-7, JP-8) are middle distillates similar in composition to kerosene and containing primarily C -C hydrocarbons (approximately 80% aliphatic and 20% aromatic). (cdc.gov)
These changes could be attributed to a loss of aliphatic groups and to an increase of aromatic character, polycondensation and degree of oxidation of the HAs. (unboundmedicine.com)
Obtained results also demonstrated that hydrophilic neutrals (HIN) are made of non-humic, aliphatic and low molecular weight components. (pjoes.com)
In the present work, valence stabilization of divalent iron during gamma irradiation was studied in presence of some organic additives, belonging to some other classes of organic compounds such as Phenol (aromatic alcohol), Acetone (aliphatic ketone), 4-Aminopyridine (heterocyclic amino compound) and Hydrazine hydrate (aliphatic amino compound) to complement our previous studies. (scirp.org)
In the present work, the protective effect occurring due to the presence of additives belonging to different classes of organic compounds namely, Phenol (aromatic alcohol), Acetone (aliphatic ketone), 4-Aminopyridine (aromatic heterocyclic nitrogen compound) and Hydrazine hydrate (aliphatic amine) on divalent iron ions during extended gamma irradiation, has been studied. (scirp.org)
Diisocyanates are a group of low-molecular-weight aromatic and aliphatic compounds. (cdc.gov)

Aromatic hydrocarbons in this size range are well absorbed from the 14 gut when administered at low doses: 80-90% of ingested 2-methylnaphthalene and isopropylbenzene was recovered in the urine (ATSDR 1999). (cdc.gov)
Polycyclic aromatic hydrocarbons (PAHs) degrading bacteria can be isolated from polluted coastal environments. (omicsonline.org)
Polycyclic aromatic hydrocarbons (PAHs) are one class of organic pollutants that are considered the most hazardous due to their toxic, mutagenic, and carcinogenic properties [ 1 ]. (omicsonline.org)
In industrial sites historically contaminated by coal-tar (abandoned coking and manufactured-gas plants), other families of organic pollutants than the 16 PAHs (polycyclic aromatic hydrocarbons) classified by the US-EPA can occur and induce potential risk for groundwater resources. (univ-lorraine.fr)
Vibrio cholerae , and Staphylococcus aureus ) and Polycyclic Aromatic Hydrocarbons (PAHs). (biomedcentral.com)
Polycyclic Aromatic hydrocarbons (PAHs) are one of the most concerning chemicals in the marine environment. (researchsquare.com)
Depending on processing requirements or usage, silicone fluids may be used as 100 % materials, in a diluted form - mostly in halogenated hydrocarbons, aromatic compounds or high-boiling white spirit. (elkem.com)
Aliphatics and aromatics may contain a substituted halogen element and may be referred to as halogenated hydrocarbons, such as perchloroethylene (PCE or PER), trichloroethylene (TCE), and carbon tetrachloride. (medscape.com)

Based on a selective depletion of volatile aromatics and invariant phenol concentrations the results exclude both evaporative and oil-water partitioning processes. (edu.au)
Petroleum compositional changes, recorded mainly in the low-molecular-weight aromatic and phenol fractions, were tentatively attributed to abiotic oxidation processes. (edu.au)

PAHs could be degraded by bacteria under aerobic conditions through the initial oxidation of the aromatic ring, which is catalyzed by the dioxygenase enzyme. (omicsonline.org)
Concentrations of individual compounds (congeners) and total PAHs were recorded, indicating contamination derived from oil spills. (biomedcentral.com)
PAHs are toxic, bioactive and carcinogenic, mutagenic and ubiquitous environmental compounds composed of 2-7 fused aromatic rings derived from pyrogenic, petrogenic and biogenic sources(Ke et al. (researchsquare.com)
They therefore are linked with the metabolic activa- creases approximately logarith- occur predominantly in solid form, tion of PAHs, as well as their deposi- mically with increasing molecular bound to particulates in pol uted air, tion and disposition. (who.int)

Curcumin is a beta-diketone compound containing two substituted aromatic rings linked by a seven-carbon chain. (encyclopedia.pub)

Polar PACs (polycyclic aromatic compounds), especially oxygenated PACs (O-PACs), are present in the initial pollution and can also be generated over time. (univ-lorraine.fr)

28(2)2023 Jan 09. (bvsalud.org)

It has a molecular formula of C6H4Br2, with a molecular weight of 211.94 g/mol. (codchem.com)

Additionally, this compound is used in the synthesis of other organic compounds, such as aromatic amines and aromatic ethers. (codchem.com)

He also established the boiling point of noble metals and synthesised aromatic compounds containing selenium and tellurium. (wikipedia.org)
This compound has a melting point of 50°C and a boiling point of 257°C. (codchem.com)

In general, aromatic compounds penetrated skin more rapidly than aliphatics. (cdc.gov)
Following gastrointestinal absorption, the larger molecular weight aliphatics are transported primarily by the lymphatic system, while the smaller ones are transported by both the lymph and the blood. (cdc.gov)

Acyclic or cyclic, saturated or unsaturated, carbon compounds (excluding aromatic compounds). (itrcweb.org)
GC-MS analysis revealed that some low molecular carbon compounds in the AP-bio-oil were utilized by E. coli . (biomedcentral.com)

16 this range (primarily cytochrome P-450 mediated oxidation to fatty acids and alcohols) is slow, while the aromatics are metabolized faster (oxidation of alkyl site and/or ring, sometimes with formation of reactive intermediates, and conjugation with glutathione, glucuronic acid, or glycine) (ATSDR 1999). (cdc.gov)
The calcium sulfonate target substance is expected to be extensively metabolised (metabolism by cytochrome P450 enzymes, followed by omega- and beta-oxidation and cleavage of the aromatic ring and desulfonation) and to be eliminated mainly via the urine and also via the bile. (europa.eu)

The largest PAH detected were the family of C18H10 (molecular weight of 226) that include cyclopenta[cd]pyrene and benzo[ghi]fluoranthene, with peak concentrations reaching 8 ppm and 6 ppm, respectively. (iyte.edu.tr)

More specifically, Chemicals describes atoms and complete chemical compounds, Polymer-Segments describe regions within polymers such as proteins and DNA, and Organisms describes the biological organism modeled within a PGDB. (ecocyc.org)
The class Chemicals is subdivided into small-molecular weight compounds (class Compounds ) and atoms (not shown), and into macromolecules ( Macromolecules ). (ecocyc.org)

Carbidopa, an inhibitor of aromatic amino acid decarboxylation, is a white, crystalline compound, slightly soluble in water, with a molecular weight of 244.3. (nih.gov)
WO 2006/135881 describes quaternized ammonium salts prepared by condensation of a hydrocarbyl-substituted acylating agent and of an oxygen- or nitrogen-containing compound with a tertiary amino group, and subsequent quaternization by means of hydrocarbyl epoxide in the presence of stoichiometric amounts of an acid, especially acetic acid. (trea.com)

A hydrocarbon compound in which the carbon atoms are in a straight-chain, branched, or cyclic arrangement and are saturated or unsaturated. (itrcweb.org)
The aniline point is a physical characteristic of hydrocarbon compounds, such as oils, and refers to the minimum temperature at which the hydrocarbon and the same amount of the compound aniline c 5h 5nh 2 are perfectly miscible. (web.app)

The new compound, a light-colored, viscous paste, is easily soluble in water with the formation of strongly foaming solutions and can be used as a disinfectant. (google.com)

Spectroscopic data agree and support these results, suggesting that the chemical and structural features of the HAs of both composts tend to reach those typical of native soil HAs, that is compounds with a high degree of humification and a high molecular weight and complexity. (unboundmedicine.com)

In the United States, organic lead compounds were phased out as anti-knock additives in 1997 and are no longer used in commercial gasoline. (cdc.gov)

Silicone elastomers are compounded using reactive, straight chained molecules together with a cross-linking agent and reinforcement to give good mechanical properties (elasticity, absorption, tear strength). (elkem.com)
When used as a solvent, it is selective to aromatic molecules at low temperatures, and paraffins and naphthenes at higher temperature. (web.app)

The types of compounds present in aromatic concentrates derived from high-boiling petroleum distillates can be estimated from a gel permeation chromatographic (gpc) analysis by the use of tables developed from extensive gpc and mass-spectral analyses on fractions from four crude oils. (cdc.gov)
Furthermore, the synchronous excitation-emission spectra indicated the presence of proteinlike constituents in HIB, HIN and HON fractions as well as lignin-derived constituents with relatively low molecular sizes in HIA. (pjoes.com)

Additionally, these drugs, both non-selective inhibitors and selective cyclooxygenase-2 inhibitors, are frequently associated with side effects, impairing patients' compliance to their use 6 . (bvsalud.org)

Curcumin exists as a yellow-orange solid, with a molecular weight of 368 g/mol and a melting point of 183 °C. Chemically, it is a polyphenolic compound with two aromatic rings, each with one hydroxy and one methoxy substituent ( Figure 1 ). (encyclopedia.pub)
Each aromatic ring has one hydroxy and one methoxy group. (encyclopedia.pub)
We are engaged in offering Chemical Compounds which includes hydroxy flavone, gossypin, vanillinacetate, chlorogenic acid, bromovanillin and harmine pure.All these chemical compounds can exist as solids, at low enough temperatures & may also exist as liquids, gases, and even plasmas. (pcchem.net)

The HP-SEC, SUVA and TLS studies revealed that humic acids (HA) and hydrophobic acids (HOA) are composed of complex, aromatic and high molecular weight subunits. (pjoes.com)
Hydrophobic neutrals (HON) consist of few groups of compounds with relatively low molecular sizes and a degree of condensed aromatic moieties. (pjoes.com)
A silicone compound is made up of a hydrophobic particle (generally silica) dispersed in silicone oil, which produces a foam control or antifoam agent used in a great variety of applications. (elkem.com)

Qualitative Characterization of 370 Deg to 535 Deg C Aromatic Concentrates of Crude Oils from Gpc Analyses. (cdc.gov)
The tables that show these qualitative analyses were developed through the use of pure compounds as well as the extensive analyses on Prudhoe Bay ( Alaska ), Gach Saran (Iran), Swan Hills (Canada), and Wilmington (California) crude oils. (cdc.gov)
The most common silicone oils are linear polysiloxane compounds, that orient in spiral chains, which easily glide and slip over one another. (elkem.com)
Moreover, they show that, in contrast to traditional belief, NSO compounds in oils and bitumens can form useful molecular tools to study questions in petroleum geochemistry, biogeochemistry, and palaeobiogeochemistry. (edu.au)

low-molecular-weight (LMW) compounds consist of two or three rings, and high-molecular-weight (HMW) compounds, more than three rings [ 3 ]. (omicsonline.org)

3-Carbamoyl-2-phenylpropionaldehyde belongs to the class of organic compounds known as phenylacetaldehydes. (hmdb.ca)
6-Methylmercaptopurine, also known as thiopurine S-methylether, belongs to the class of organic compounds known as 6-thiopurines. (hmdb.ca)

This reaction is a conversion of a carboxylic acid, typically of high molecular weight, into the next lower homolog. (wikipedia.org)
We are pleased to offer high quality 2-((5-Hexylthiophen-2-yl)methylene)malononitrile in various sizes (for research, pilot-scale, or production applications) from milligrams to multi-kilogram batches, making it easy for you to choose the right amount to suit your needs. (georganics.sk)
Other known methods for producing PAS with a high molecular weight include a two-stage polymerization method of performing a polymerization reaction while changing the polymerization temperature and the water content present in the polymerization reaction system, and a method of performing polymerization using a phase separation agent as necessary (Patent Documents 3 and 4). (justia.com)
A high efficiency aromatic compounds production capability was detected in JM101 carrying pJLB aroG fbr tktA , when growing on glycerol, as compared to glucose. (biomedcentral.com)
Heat Cured Rubber is a silicone elastomer formed of straight chains with very high molecular weight. (elkem.com)
Concerning the absorption after exposure via inhalation, as the chemical is considered to have a low vapour pressure, is highly lipophilic, has a high LogPow, and has a rather high molecular weight, it is clear, that the substance is poorly available for inhalation and will not be absorbed significantly. (europa.eu)

Moreover, a dioxygenase gene, nidA3B3, was detected in Mycobacterium vanbaalenii PYR-1 as an alternate degradation pathway which could catalyze both the initial dihydroxylation of pyrene [ 11 ] to be pyrene cis-4,5-dihydrodiol, and an alternate detoxification pyrene pathway to be pyrene cis-1,2-dihydrodiol [ 12 ]. (omicsonline.org)
In humans, 3-carbamoyl-2-phenylpropionaldehyde is involved in felbamate metabolism pathway. (hmdb.ca)
Carbon flux from glycerol can be efficiently redirected in JM101 strain into the aromatic pathway using appropriate tools. (biomedcentral.com)

Process for the production of a water-soluble, higher molecular weight, α-substituted benzylamine derivative. (google.com)
The subject of the present patent is a process for the preparation of a water-soluble, higher molecular weight, α-substituted benzylamine derivative, characterized in that that a-methyl-4-dodecylbenzylamine is methylated with dimethyl sulfate and the a-methyl-4-dodecyl-benzyldimethylamine that is obtained is converted into the quaternary ammonium compound with diethyl sulfate. (google.com)

They share a common structure (at least 1 carbon atom and 1 hydrogen atom), low molecular weight, lipophilicity, and volatility, and they exist in liquid form at room temperature. (medscape.com)

It is also used as a solvent, and has been used as an antiknock compound for gasolines. (web.app)

[2] It is a mild inhibitor of the formation of pigment in plant and animal tissues, and is used in food and cosmetics to preserve or change colors of substances. (pcchem.net)

J. Prothmann, S. Palmer, C. Turner, M. Sandahl, Separation of monomeric and dimeric phenolic compounds in lignosulphonate lignin on different stationary phases using ultrahigh-performance supercritical fluid chromatography, J. Chromatogr. (lu.se)

1893. Digital 2nd edition from 1897 by the University and State Library Düsseldorf F. Krafft, A. Stern, Hermann Wiglow: "Über das Verhalten der fettsauren Alkalien und Seifen in Gegenwart von Wasser Teil I und II" (The Behavior of the Fatty Acid Alkalis and Soaps in the Presence of Water, Parts 1 and 2). (wikipedia.org)
Example: 200 parts of laurophenone are boiled with 200 parts of amalgamated zinc sheet and 400 parts by volume of hydrochloric acid, prepared from one part of concentrated acid and 2 parts of water, on a reflux condenser for 5 hours. (google.com)
This compound reacts with air to afford the bis(hydroperoxide), which is structurally similar to cumene hydroperoxide and rearranges to give acetone and hydroquinone in acid. (camlinfs.com)
It reflects the relative molecular mass or aromatic condensation degree of humic acid. (researchgate.net)
The mechanochemical methods can increase the molecular condensation degree and molecular relative mass of humic acid, but reduce the molecular condensation degree and molecular relative mass of fulvic acid. (researchgate.net)
Succinic acid, a four-carbon dicarboxylic acid produced as an intermediate of the tricarboxylic acid cycle or as an end product of anaerobic metabolism, has been widely used in the agricultural, food and pharmaceutical industries [ 2 ]. (biomedcentral.com)

Combustion and Flame, 131(1-2), 16-28. (iyte.edu.tr)

Additionally, this compound is used as a catalyst in certain chemical reactions, such as the synthesis of ethylbenzene and styrene. (codchem.com)

Airborne asbestos fibers are defined as those particles having (1) an aspect ratio of 3 to 1 or greater and (2) the mineralogic characteristics (that is, the crystal structure and elemental composition) of the asbestos minerals and their nonasbestiform analogs. (cdc.gov)
Slight chemical alterations to the compounds have imparted beneficial characteristics, including increased duration and potency, to each. (medscape.com)

RTV-2 silicones are two-component, Room Temperature Vulcanization silicone rubbers, gels or foams. (elkem.com)

Conventional semiconducting polymer synthesis typically involves transition metal-mediated coupling reactions that link aromatic units with single bonds along the backbone. (nature.com)

It was found that the efficiency of valence stabilization depends on the amount and chemical structure of the added compounds. (scirp.org)

For a fraction from the gpc analysis, the retention volume and the molecular weights (from mass spectrometer) suffice to indicate the types of compounds that predominate. (cdc.gov)
Li K, Al-Rudainy B, Sun M, Wallberg O, Hulteberg C, and Tunå P. Membrane Separation of the Base-Catalyzed Depolymerization of Black Liquor Retentate for Low-Molecular-Mass Compound Production. (lu.se)

Para-Benzoquinone is an organic chemical compound commonly known as p-Quinone. (camlinfs.com)

Personal monitoring samples showed that exposure was in the parts per million (ppm) range for the low molecular weight aromatics and in the microgram per cubic meter range for polynuclear aromatics (PNAs). (cdc.gov)
192) 1.Flame retardants - toxicity 2.Occupational exposure 3.Environmental exposure I.Series ISBN 92 4 157192 6 (NLM Classification: WA 250) ISSN 0250-863X The World Health Organization welcomes requests for permission to reproduce or translate its publications, in part or in full. (inchem.org)
When updating its air contaminants standard in 1989, OSHA decreased this limit to 0.005 ppm (0.036 mg/m3) as an 8-hour time-weighted average (TWA) and 0.02 ppm (0.14 mg/m3) as a short-term exposure limit. (cdc.gov)

Systemic health effects have been reported following dermal application of JP-5, kerosene, and several aromatic compounds of the appropriate size (isopropylbenzene, naphthalene, monomethylnaphthalenes), indicating that these substances are absorbed through the skin (ATSDR 1995a, 1995b, 1998, 1999). (cdc.gov)

The results presented in chapter 2 suggest that intact bacterial cells are present in biodegraded petroleum, as indicated by the detection of membrane lipid fragments, termed phospholipids, in these oil samples. (edu.au)

4-Methoxyphenol is an organic chemical compound manufactured industrially by the methylation of hydroquinone. (camlinfs.com)
4-Tert-butyIcatechoI is an organic chemical compound obtained by the butylation of Catechol using Isobutene gas. (camlinfs.com)
The results showed that valence stabilization of Fe(II) in presence of these compounds depends also on the amount and chemical structure of the additive used. (scirp.org)
2-((5-Hexylthiophen-2-yl)methylene)malononitrile is a useful chemical compound with a variety of research applications. (georganics.sk)
3,3′-Carbonylbis(7-N,N-diethylaminocoumarin) is a useful chemical compound with a variety of research applications. (georganics.sk)
Organic solvents are a chemical class of compounds that are used routinely in commercial industries. (medscape.com)

Central to many of these design approaches is to introduce molecular functionality that can induce dipole−dipole interactions, facilitating close intermolecular packing, short π−π distances, and therefore potentially optimal morphology for transport 8 . (nature.com)

Herein, we developed a trialkylsilyl substituted 2D-conjugated polymer with the highest occupied molecular orbital level down-shifted by Si-C bond interaction. (nature.com)
For transistor applications, polymer molecular conformation and thin film morphology have been shown to influence charge carrier mobility, and subsequently the device electrical properties 3 . (nature.com)

Anatomy3

Organisms34

Diseases6

Chemicals and Drugs126

Analytical, Diagnostic and Therapeutic Techniques and Equipment33

Phenomena and Processes53

Disciplines and Occupations5

Technology, Industry, Agriculture2

Information Science4

Named Groups1

Health Care11

Benzene11

Aliphatic6

Hydrocarbons8

Phenol2

PAHs4

Substituted aromatic rings1

Polycyclic aromatic1

20231

Formula1

Amines1

Boiling Point2

Aliphatics2

Carbon compounds2

Oxidation2

Concentrations1

Chemicals2

Amino2

Hydrocarbon2

Soluble in water1

Degree of humification1

Lead compounds1

Molecules2

Fractions2

Selective1

Hydroxy3

Hydrophobic3

Oils4

Consist1

Class of organic2

High6

Pathway3

Derivative2

Hydrogen1

Gasolines1

Inhibitor1

Dimeric1

Acid6

Combustion1

Additionally1

Characteristics2

Rubbers1

Typically1

Efficiency1

Mass2

Commonly1

Exposure3

Dermal1

Petroleum1

Chemical6

Induce1

Polymer2