United States Patent Richard B. Hartman White Bear Lake; George H. Smith, Maplewood, both Minn. 857,552 Sept. 12, 1969 Nov. 2, 1971 Minnesota Mining and Manufacturing Company Saint Paul, Minn. [72] Inventors [21 Appl. No. [22] Filed [45] Patented [73] Assignee [54] PROPENONE SENSITIZERS FOR THE PHOTOLYSIS OF ORGANIC HALOGEN COMPOUNDS 8 Claims, No Drawings 52 us. Cl 96/90, [51] Int. Cl G03c 1/60, G030 1/72 [50] Field of Search 96/90, 88, 48,115 P, 35.1, 73, 74, 65, 66.3, 99, 100, 1.3, 1.5 [56] References Cited UNITED STATES PATENTS 3,081,165 3/1963 Ebert 96/l.3 3,374,094 3/1968 Wainer 96/90 X Primary Examiner-John T. Goolkasian Assistant Examiner-M. E. McCamish Attorney-Kinney, Alexander, Sell, Steldt & De La Hunt ABSTRACT: Photosensitive compositions containing nonbasic propenone compounds as sensitizers for photolyzable organic halogen compounds, and image recording elements in which at least one layer contains such photosensitive compositions. PROPENONE SENSITIZERS FOR THE PHOTOLYSIS OF ...

We use recent aircraft measurements of a comprehensive suite of anthropogenic halocarbons, carbon monoxide (CO), and related tracers to place new constraints on North American halocarbon emissions and quantify their global warming potential. Using a chemical transport model (GEOS-Chem) we find that the ensemble of observations are consistent with our prior best estimate of the U.S. anthropogenic CO source, but suggest a 30% underestimate of Mexican emissions. We develop an optimized CO emission inventory on this basis and quantify halocarbon emissions from their measured enhancements relative to CO. Emissions continue for many compounds restricted under the Montreal Protocol, and we show that halocarbons make up an important fraction of the total greenhouse gas source for both countries: our best estimate is 9% (uncertainty range 6-12%) and 32% (21-52%) of equivalent CO2 emissions for the U.S. and Mexico, respectively, on a 20 year time scale. Performance of bottom-up emission inventories is ...

Halothane Halocarbon is a medicine available in a number of countries worldwide. A list of US medications equivalent to Halothane Halocarbon is available on the Drugs.com website.

We report thirty-one new far-infrared laser lines in 1,1-difluoroethylene, optically pumped by CW N |SUB|2|/SUB|O and CO |SUB|2|/SUB| lasers; the former has produced most of them. Assignments of the IR and FIR transitions have been carried out for numerous pumping schemes.

Ive seen several offhand remarks that embryo chorions can be cleared using halocarbon oil. Is this true and, if so, what is a protocol for doing so? Thanks Scott Rifkin ...

Shi, Qiang, Petrick, Gert, Quack, Birgit, Marandino, Christa and Wallace, Douglas W.R. (2013) An experimental study of volatile halocarbon production in surface seawater . ...

According to the REACH Guidance on information requirements and chemical safety assessment, a leading DN(M)EL needs to be derived for every relevant human population and every relevant route, duration and frequency of exposure, if feasible. As the substance is a gas, oral and dermal routes of exposure are considered to be irrelevant, therefore no DNELs were derived for these routes. As the substance is not classified for acute toxicity, according to the REACH Guidance on information requirements and chemical safety assessment (R.8.4.3.1), no acute / short-term exposure DNELs need to be derived. For long-term exposure, data from subchronic (13 weeks/90 days) and combined chronic toxicity/carcinogenicity (104 weeks) studies with rats and mice are available. In the 13 week studies, no target organs were consistently identified. In the combined chronic toxicity/carcinogenicity studies no adverse effects were observed at the highest concentration tested (10000 ppm (26000 mg/m3)). In this hazard ...

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 ...

Disclaimer: This material is being kept online for historical purposes. Though accurate at the time of publication, it is no longer being updated. The page may contain broken links or outdated information, and parts may not function in current web browsers. Visit https://espo.nasa.gov for information about our current projects.. ...

The NOAA Earth System Research Laboratory was formed to observe and understand the Earth system and to develop products, through a commitment to research that will advance the National Oceanic and Atmopsheric Administrations environmental information and services on global to local scales.

Source: Polardok by Swedish Polar Research Secretariat. Available from: 2012-11-15 Created: 2012-11-15 Last updated: 2012-11-15 ...

The simplified exchange approximation (SEA) method for calculation of infrared radiative transfer, used for general circulation model (GCM) climate simulations at the Geophysical Fluid Dynamics Laboratory (GFDL) and other institutions, has been updated to permit inclusion of the effects of methane (CH4), nitrous oxide (N2O), halocarbons, and water-vapor-air molecular broadening (foreign broadening). The effects of CH4 and N2O are incorporated by interpolation of line-by-line (LBL) transmissivity calculations evaluated at standard species concentrations; halocarbon effects are calculated from transmissivities computed using recently measured frequency-dependent absorption coefficients. The effects of foreign broadening are included by adoption of the CKD formalisim for the water vapor continuum [Clough et al., 1989]. For a standard midlatitude summer profile, the change in the net infrared flux at the model tropopause due to the inclusion of present-day concentrations of CH4 and N2O is ...

The purpose of this regulation is to reduce halocarbon emissions into the atmosphere to ensure that the ozone layer is protected and to minimize the increase in the greenhouse effect connected with the human-source emissions of certain other halocarbons. This regulation is under review. ...

The research study offers deep evaluation of the Global Isoflurane Market and helps market participants to gain a strong foothold in the industry. It

This investigation examines the reactivity of phosphinoboronate esters Ph2PBpin (pin = 1,2-O2C2Me4) and Ph2PBcat (cat = 1,2-O2C6H4), as well as other phosphinoboron species, with various aryl and aliphatic acyl chlorides. These reactions proceed smoothly to give acyl phosphines of the type RC(O)PR′2 along with loss

Haloalkanes: lt;p|>| The |haloalkanes| (also known as |halogenoalkanes| or |alkyl halides|) are a group of |ch... World Heritage Encyclopedia, the aggregation of the largest online encyclopedias available, and the most definitive collection ever assembled.

Pharmacokinetics and ecodisposition of polyhalogenated hydrocarbons: aspects and concepts. Drug Metabolism Reviews, 11 (2). pp. 149-190 ...

David, Please see our website at www.labscientific.com. We sell fly facility equipment such as CO2 stages, selection reagents and fly supplies. We also now sell Halocarbon oil. Wealso design fly cages of all sizes Thanks, Marty Labscientific Marty Rosen ...

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Monomeric (amino)(carboxy) radicals were synthesized in two steps: the addn. of a stable cyclic (alkyl)(amino) carbene to an acyl chloride, followed by a one-electron redn. Their stability toward dimerization also allows for the synthesis of related bi- and triradicals. [on SciFinder(R ...

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On Fri, 2006-07-21 at 10:24 -0700, Sergio Pascual wrote: , Author: sergiopr , @@ -17,10 +17,11 @@ , , %prep , %setup -q , -%{__chmod} -x src/fits/fitsconv.c , , %build , -%configure , +%configure CFLAGS=${CFLAGS} -funroll-loops -fomit-frame-pointer -O1 REVERT this change IMMEDIATELY. You are breaking debug infos. Ralf ...

Introduction. Victor Leung 7C (10) Experiment Date: 28TH September, 2006. EXP1 - Hydrolysing Organic Halogen Compounds Aim: The purpose of this experiment is to find out how the rate of the hydrolysis of an organic halogen compound depends on (1) the identity of the halogen atom (2) the nature of the CH skeleton. Principle: The hydrolysis of haloalkanes is an example of nucleophilic substitution in which the carbon halogen bond is replaced with a hydroxyl group. Water molecule is the nucleophile of the reaction while the halide ion departs as the leaving group. The reaction occurs faster with alcohol acting as a common solvent. The ease of leaving of halide ions increase in as the atom becomes bigger, and the bonding length longer. Method: The experiment made use of the product of hydrolysis - halide ions. The halide ions formed could be detected by AgNO3 which forms precipitation. The length of time required is inversely proportional to the rate of reaction. By observing the changes in the test ...

EWGs Tap Water Database Dibromochloromethane results for City of Angleton | Dibromochloromethane. Find out what is in your tap water

The draft Toxicological Review of hexachloroethane provides scientific support and rationale for the hazard and dose-response assessment pertaining to chronic exposure to hexachloroethane. Hexachloroethane (C2Cl6) is a colorless, nonflammable, crystalline solid primarily used in the military for pyrotechnic devices. Hexachloroethane has been used as a polymer additive, moth repellant, plasticizer for cellulose esters, insecticide solvent, and for refining aluminum alloys. Hexachloroethane is not commercially distributed in the United States. Exposure to hexachloroethane is primarily occupational, via inhalation and dermal exposure during hexachloroethane manufacturing and metal refining. Exposure may occur in military or civilian personnel working with pyrotechnic devices containing hexachloroethane and via ingestion of contaminated drinking water or fish. Hexachloroethane was identified in Superfund sites ...

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The haloalkanes (also known as halogenoalkanes or alkyl halides) are a group of chemical compounds derived from alkanes containing one or more halogens. They are a subset of the general class of halocarbons, although the distinction is not often made. Haloalkanes are widely used commercially and, consequently, are known under many chemical and commercial names. They are used as flame retardants, fire extinguishants, refrigerants, propellants, solvents, and pharmaceuticals. Subsequent to the widespread use in commerce, many halocarbons have also been shown to be serious pollutants and toxins. For example, the chlorofluorocarbons have been shown to lead to ozone depletion. Methyl bromide is a controversial fumigant. Only haloalkanes which contain chlorine, bromine, and iodine are a threat to the ozone layer, but fluorinated volatile haloalkanes in theory may have activity as greenhouse gases. Methyl iodide, a naturally occurring substance, however, does not have ozone-depleting properties and the ...

In organic chemistry, hydrocarbons (compounds composed solely of carbon and hydrogen) are divided into two classes: aromatic compounds and aliphatic compounds (/ˌælɪˈfætɪk/; G. aleiphar, fat, oil), also known as non-aromatic hydrocarbons. Aliphatics can be cyclic; however, hydrocarbons with conjugated pi-systems that obey Hückels rule are instead considered to be aromatic.[1] Aliphatic compounds can be saturated, like hexane, or unsaturated, like hexene and hexyne. Open-chain compounds (whether straight or branched) contain no rings of any type, and are thus aliphatic. ...

Doc Browns Chemistry Advanced Level Pre-University Chemistry Revision Study Notes for UK KS5 A/AS GCE IB advanced level organic chemistry students US K12 grade 11 grade 12 organic chemistry. GCE A Level Revision Notes PART 10 Summary of organic reaction mechanisms - A mechanistic introduction to organic chemistry and explanations of different types of organic reactions. 10.7 Reaction of acid/acyl chlorides with ammonia/amines. Examples are explained of the organic chemistry mechanisms for acid/acyl chlorides undergoing nucleophilic addition and elimination reactions. Amide formation from reaction with ammonia or primary amines. The revision notes include full diagrams and explanation of the mechanisms and the molecular equation and reaction conditions are also explained.. See also full notes on the chemistry of carboxylic acids and derivatives. [SEARCH BOX] ignore ads at top. ...

Other names: Arcton 63; Arklone P; F 113; Forane 113; Freon R 113; Freon TF; Freon 113; Freon 113 TR-T; Frigen 113; Frigen 113 TR; Frigen 113 TR-T; Frigen 113A; FC 113; Genetron 113; R 113; 1,1,2-Trichloro-1,2,2-Trifluoroethane; 1,1,2-Trifluoro-1,2,2-trichloroethane; 1,2,2-Trichlorotrifluoroethane; CFCl2CF2Cl; 1,1,2-Trichlorotrifluoroethane; Fluorocarbon 113; R 113(Halocarbon); Refrigerant 113; LEDON 113; Asahifron 113; 1,2,2-Trifluorotrichloroethane; Daiflon S 3; Freon F113; Halocarbon 113; Isceon 113; Kaiser chemicals 11; Khladon 113; Refrigerant R 113; 1,1,2-Trifluorotrichloroethane; Arklone; CFC-113; Distillex DS5; FC 133; Freon TF (113); Genesolv D; Trichloro 1,2,2-trifluoroethane; Halon 113; Delifrene LS; 1,1,2-trichlorotrifluoroethane (Freon 113 ...

Atıf İçin Kopyala SAYGILI N. Hacettepe University Journal of the Faculty of Pharmacy, cilt.31, sa.2, ss.85-96, 2011 (Hakemli Üniversite Dergisi) ...

Hydrocarbons are toxic To Pets. Hydrocarbons are liquids that are commonly found in your garage. Examples are, engine oil, gasoline, diesel fuels, wood stains.

Fluxes of halogenated volatile organic compounds (VOCs) over the Southern Ocean remain poorly understood, and few atmospheric measurements exist to constrain modeled emissions of these compounds. We present observations of CHBr3 , CH2 Br2 , CH3 I, CHClBr2 , CHBrCl2 , and CH3 Br during the O2 /N2 Ratio and CO2 Airborne Southern Ocean (ORCAS) study and the second Atmospheric Tomography mission (ATom-2) in January and February of 2016 and 2017. Good model-measurement correlations were obtained between these observations and simulations from the Community Earth System Model (CESM) atmospheric component with chemistry (CAM-Chem) for CHBr3 , CH2 Br2 , CH3 I, and CHClBr2 but all showed significant differences in model : measurement ratios. The model : measurement comparison for CH3 Br was satisfactory and for CHBrCl2 the low levels present precluded us from making a complete assessment. Thereafter, we demonstrate two novel approaches to estimate halogenated VOC fluxes; the first approach takes ...

Aryl halides are much less reactive towards nucleophilic substitution reactions than haloalkanes. The less reactivity of aryl halides can be described as follows: 1. Withdrawal of electrons by Benzene and Stabilization by resonance: In ar

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 ...

Alkyl halides are potentially mutagenic carcinogens. However, no efficient fluorescent sensor for alkyl halide detection in human-derived samples has been developed to date. Herein, we report a new protein-based fluorescent sensor for alkyl halides. Analysis of the HaloTag holo-crystal structure with its cov

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Solvents are classified largely according to molecular structure or functional group. Classes of solvents include aliphatic hydrocarbons, many of which are halocarbons, aromatic hydrocarbons, alcohols, ethers, esters/acetates, amides/amines, aldehydes, ketones, and complex mixtures that defy classification. The main determinants of a solvents inherent toxicity are (1) its number of carbon atoms; (2) whether it is saturated or has double or triple bonds between adjacent carbon atoms; (3) its configuration (i.e., straight chain, branched chain, or cyclic); (4) whether it is halogenated; and (5) the presence of functional groups. Subtle differences in chemical structure can translate into dramatic differences in solvent toxicity. ...

Contraction of volume is volume of gaseous mixture taken minus , volume of gaseous products obtained in a combustion reaction. In combustion of Hydrocarbon water obtained at room temperature is in liquid state hence its volume ignored in calculation of volume contraction. ...

I want to make a quick correction to the last video where we introduced the carboxylic acid videos, and then we can actually compare them in terms of

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Jun 19,2021 - Revisal Problems (Past 13 Year) JEE Advanced (Alkyl Halides) | 31 Questions MCQ Test has questions of JEE preparation. This test is Rated positive by 86% students preparing for JEE.This MCQ test is related to JEE syllabus, prepared by JEE teachers.

Kupryianchyk D., Hovander L., Jones B., et al. Organohalogen Compounds, 2009. 71: p.002720-002725. Feline hyperthyroidism has been observed to increase all over

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2,5-Dichlorobenzenesulfonyl chloride, 98%, ACROS Organics 25g; Glass bottle Chemicals:Organic Compounds:Organohalogen compounds:Sulfonyl halides:Sulfonyl chlorides

b) The treatment of alkyl chloride with aqueous KOH leads to the formation of alcohols but in the presence of alcoholic KOH , alkenes are the major products ...

As a result, we see a clear-cut difference in the reaction products, which reflects nucleophilicity (bonding to an electrophilic carbon) versus basicity (bonding to a proton). Kinetic studies of these reactions show that they are both second order (first order in R-Br and first order in Nu:(-)), suggesting a bimolecular mechanism for each. The substitution reaction is clearly SN2. The corresponding designation for the elimination reaction is E2. An energy diagram for the single-step bimolecular E2 mechanism is shown on the right. We should be aware that the E2 transition state is less well defined than is that of SN2 reactions. More bonds are being broken and formed, with the possibility of a continuum of states in which the extent of C-H and C-X bond-breaking and C=C bond-making varies. For example, if the R-groups on the beta-carbon enhance the acidity of that hydrogen, then substantial breaking of C-H may occur before the other bonds begin to be affected. Similarly, groups that favor ...

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Who (name of researcher and affiliation) wants to study/investigate what (description of what you want to study) and is seeking participation from who (which schools or which teachers or which students - numbers and types) which would involve what (description of time involved from participants, measures used, other requirements of participating) and (if applicable), the researcher has already discussed this study with who (anyone in CCSD who has been part of discussions) and they feel what (e.g., are in support, want to participate, etc.). The benefits to participants will be what (describe how participants would benefit) and the benefits to CCSD will be what (describe how CCSD would benefit).. Please email a copy of your research summary (Word or Word Perfect document), cover letter and proposal to: Dr. Joanna Gilmore or JoAnne Daquigan. ...

A short service interruption will take place on Thursday, July 16, 2020 between 9:00 and 9:15 a.m. (Paris GMT+2) to improve the network capabilities of the CCSD infrastructure. This maintenance carried out by CC-IN2P3 at the request of the CCSD will lead to the shutdown of our equipment for a few seconds and will make all our applications (including HAL, Sciencesconf.org, Episciences.org) unavailable for the time of the update. We nevertheless foresee an interruption of 15 minutes and recommend that you do not try to record data between 9:00 and 9:15 am. This change is intended to improve our performance and we thank you for your understanding during this interruption. The entire CCSD infrastructure benefits from the hosting and services of the IN2P3 Computing Centre ...

Carbon is found on Earth in water, rocks and elements such as magnesium and iron. Hydrocarbons are what people often use as sources of energy, such as coal, petrol and natural...

This course will provide an in-depth look at the myriad aspects of Subsea Systems. Students will learn how hydrocarbons are retrieved from subsea wells and how they are directed to the surface. From there, students will walk through the equipment of subsea systems, including: trees, jumpers, pipeline risers, manifolds, templates, pipeline end termination, remotely operated

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