WebHCFC-124 (1,1,1,2-tetrafluorochloroethane), introduced comparatively recently, is an aerosol propellant and refrigerant fluid that is produced in modest amounts. HCFC-141b (1,1-dichloro-1-fluoroethane), again a relative newcomer, is produced in much larger quantities for use either as a blowing agent for rigid plastic foams, such as those used ... WebSep 1, 2012 · HCFC 225 became a favorite solvent for defluxing in Southern California, because it is one of the few readily adapted and readily permitted solvent options in SCAQMD (South Coast Air Quality Management District). HCFC 225 is VOC exempt (i.e. it is not a Volatile Organic Compound; it does not make smog) and it is not a HAP …
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Web43 rows · Apr 5, 2024 · The allowance system provides flexibility for industry to operate efficiently while ensuring the United States meets its agreements under the Montreal … WebSep 13, 2024 · hydrochlorofluorocarbons. (HCFCs). HCFCs were developed as transitional substitutes for Class I ODS and are subject to a later phaseout schedule than … WebSep 22, 2024 · A global monitoring network, administered by the U.S. National Oceanic and Atmospheric Administration, and another international effort known as the Advanced Global Atmospheric Gases Experiment,... it was great to see