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Freon 113 Frigen 113 TR Freon TF Valclene 1,1,2-trichlorotrifluoroethane ... like most chlorofluoroalkanes, forms phosgene gas when exposed to a naked flame. [19] See ...
For example, phosgene was initially blamed for the Bhopal disaster, but investigations proved methyl isocyanate to be responsible for the numerous poisonings and fatalities. Recent major incidents happened in January 2010 and May 2016. An accidental release of phosgene gas at a DuPont facility in West Virginia killed one employee in 2010. [41]
According to ASHRAE standard 34, the R-number of a chemical refrigerant is assigned systematically according to its molecular structure and has between two and four digits. If there are carbon -carbon multiple bonds , there are four digits in all: the number of these bonds is the first digit and the number of carbon atoms minus one (C-1) is next.
Chlorodifluoromethane (R-22 or HCFC-22), a type of Freon. [9] [10] Dichlorodifluoromethane (R-12 or CFC-12), the most commonly used Freon brand refrigerant prior to its ban in many countries in 1996 and total ban in 2010. 1,1,1,2-Tetrafluoroethane (R-134a or HFC-134a), one of the main replacements for the formerly widespread R-12.
Potato chips for sale at a UDF store in Columbus, Ohio. United Dairy Farmers (UDF) is an American chain of shops offering dairy products as well as coffee and gasoline. UDF was started by Carl Lindner Sr. and his children in 1938. Almost as soon as they started operations, the Lindners began work on building a dairy store.
Officials had cautioned residents to shelter in place due to a phosgene gas leak at Altivia, a chemical manufacturer and transporter that develops phosgene derivatives for pharmaceuticals and the ...
When used as a refrigerant, R-114 is classified as a medium pressure refrigerant. The U.S. Navy uses R-114 in its centrifugal chillers in preference to R-11 to avoid air and moisture leakage into the system. While the evaporator of an R-11 charged chiller runs at a vacuum during operation, R-114 yields approximately 0 psig operating pressure in ...
Traces of a toxic, colorless gas were found at the headquarters of Sweden’s security agency where a suspected gas leak last week forced authorities to evacuate some 500 people from the facility ...