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The first air conditioners and refrigerators employed toxic or flammable gases, such as ammonia, sulfur dioxide, methyl chloride, or propane, that could result in fatal accidents when they leaked. [4] In 1928 Thomas Midgley Jr. created the first non-flammable, non-toxic chlorofluorocarbon gas, Freon (R-12).
Highly Toxic: a gas that has a LC 50 in air of 200 ppm or less. [2] NFPA 704: Materials that, under emergency conditions, can cause serious or permanent injury are given a Health Hazard rating of 3. Their acute inhalation toxicity corresponds to those vapors or gases having LC 50 values greater than 1,000 ppm but less than or equal to 3,000 ppm ...
When inhaled, Freon has toxic effects that can have detrimental impacts on various systems in the body. These effects can damage the brain and the cardiovascular system, potentially causing abnormalities in heart functions as well as seizures. Freon inhalation can also cause damage to the lungs and in rare cases, respiratory failure.
Prior to, and during the 1920s, refrigerators used toxic gases as refrigerants, including ammonia, sulphur dioxide, and chloromethane. Later in the 1920s after a series of fatal accidents involving the leaking of chloromethane from refrigerators, a major collaborative effort began between American corporations Frigidaire, General Motors, and ...
1,1,1,2-Tetrafluoroethane is a non-flammable gas used primarily as a "high-temperature" refrigerant for domestic refrigeration and automobile air conditioners.These devices began using 1,1,1,2-tetrafluoroethane in the early 1990s as a replacement for the more environmentally harmful R-12.
The chlorine gas cautionary tale garnered over 21 million views and 2.7 million likes — but more importantly, it pointed out a common household cleaning mistake that poison experts say countless ...
Carbon dioxide has seen extensive use as a refrigerant. Carbon dioxide's main advantage as a refrigerant stems from the fact that it is classified as an A1 refrigerant by the EPA, [16] placing it in the least toxic and hazardous category for refrigerants. This makes carbon dioxide a viable refrigerant for systems that are used in areas where a ...
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