Refrigerants are used in air-conditioning systems and freezers or refrigerators and are assigned a "R" number (by ASHRAE - formerly the American Society of Heating, Refrigerating and Air Conditioning Engineers), which is determined systematically according to their molecular structure. Ozone concentrations measured at the midlatitudes from the ground up through the stratosphere from 1998 to 2016 have declined by 2.2 Dobson units. In many countries, products containing DCM must carry labels warning of its health risks. Dichloromethane (DCM or methylene chloride) is an organochloride compound with the formula CH2Cl2. If you are the author of this article you do not need to formally request permission View more via ChEBI Ontology. Fetal toxicity in women who are exposed to it during pregnancy, however, has not been proven. Solvents are generally classified by the polarity, and considered either polar or non-polar, as indicated by the dielectric constant.  Prolonged skin contact can result in DCM dissolving some of the fatty tissues in skin, resulting in skin irritation or chemical burns. Although it is not miscible with water, it is polar, and miscible with many organic solvents.  The reasons for this decline are unclear, but one unverified hypothesis is the presence of short-lived substances such as dichloromethane in the lower atmosphere. Dichloromethane Dielectric Constant  Instructions for using Copyright Clearance Center page for details. "Reproduced from" can be substituted with "Adapted from". Dortmund Data Bank Edition 2014. Peptide-capped AYSSGAPPMPPF gold nanoparticles were demonstrated for highly selective chemical vapor sensing using individual multivariable inductor–capacitor–resistor (LCR) resonators. Log in, contact your Springer representative, or get a free trial, Dortmund Data Bank (DDB) – Thermophysical Properties, ©Springer-Verlag Berlin Heidelberg & DDBST GmbH, 2010-2014. In all cases the Ref. dichloromethane do not need to formally request permission to reproduce material contained in this  * E-mail: dichloromethane 68 9.1 dichlorostyrene 76 2.6 dichlorotoluene 68 6.9 dictyl phthalate 5.1 9. dielectric constants of common materials materials deg. DCM was first prepared in 1839 by the French chemist Henri Victor Regnault (1810–1878), who isolated it from a mixture of chloromethane and chlorine that had been exposed to sunlight.. A member of the class of chloromethanes that is methane in which two of the hydrogens have been replaced by chlorine. Dichloromethane -95 40 1.326 1.4241 8.93 16 1.55 Diethylamine -50 56 0.707 1.3864 3.6 24.3 0.92 Diethyl ether -117 35 0.713 1.3524 4.33 22.1 1.3 1,2-Dimethoxyethane -68 85 0.863 1.3796 7.2 24.1 1.71 ... Dielectric Constant of Common solvents.xls Author: cjj Created Date: N. Nagraj, J. M. Slocik, D. M. Phillips, N. Kelley-Loughnane, R. R. Naik and R. A. Potyrailo, Chemistry and Chemical Engineering Global Technology Domain, General Electric Global Research Center, Niskayuna, NY, USA, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA, Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA, Instructions for using Copyright Clearance Center page. This service is an Elixir Core Data Resource. A substance used in a thermodynamic heat pump cycle or refrigeration cycle that undergoes a phase change from a gas to a liquid and back. the whole article in a third party publication with the exception of reproduction 71 (1999), Canadian Environmental Protection Act Priority Substances List Assessment Report, Sustainable uses and Industry recommendations, https://en.wikipedia.org/w/index.php?title=Dichloromethane&oldid=984473910, GABAA receptor positive allosteric modulators, Articles with dead external links from December 2016, Articles with permanently dead external links, Pages using collapsible list with both background and text-align in titlestyle, Articles containing unverified chemical infoboxes, Creative Commons Attribution-ShareAlike License, -454.0 kJ/mol (from standard enthalpies of formation), None, but can form flammable vapour-air mixtures above ≈100 °C, 25 ppm over 8 hours (time-weighted average), 125 ppm over 15 minutes (, This page was last edited on 20 October 2020, at 07:59.
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