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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 ...
Gas leaks can damage or kill plants. [4] [5] In addition to leaks from natural gas pipes, methane and other gases migrating from landfill garbage disposal sites can also cause chlorosis and necrosis in grass, weeds, or trees. [6] In some cases, leaking gas may migrate as far as 100 feet (30 m) from the source of the leak to an affected tree. [7]
Natural gas leaks happen nearly every day in the U.S. — and they can be deadly if they go undetected. A report from a group of Texas environmental nonprofits released in June found around 2,600 ...
Chlorine gas poisoning is an illness resulting from the effects of exposure to chlorine beyond the threshold limit value. Acute chlorine gas poisoning primarily affects the respiratory system , causing difficulty breathing, cough, irritation of the eyes, nose, and throat, and sometimes skin irritation .
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. [6] In 1928 Thomas Midgley Jr. created the first non-flammable, non-toxic chlorofluorocarbon gas, Freon (R-12).
Parents or caregivers can lessen the risks of refrigerator deaths. Spaces can be made safer by childproofing against entrapment, such as using a refrigerator bar or lock to prevent access to appliances. [22] [28] Doors that lead to spaces containing dangerous equipment, such as utility rooms and campers, should be kept closed and locked. [14]
1984, India. The Bhopal disaster (also known as Bhopal gas tragedy): A gas leak incident which led to at least 3,787 deaths. 1988, England. Camelford water pollution incident: The accidental contamination of the drinking water supply to 20,000 local people and up to 10,000 tourists of the town of Camelford with 20 tonnes of aluminium sulphate ...
"Never keep leftovers in the refrigerator longer than three or four days, always reheat them to 165 degrees Fahrenheit, and if there's any doubt about whether food is safe — throw it out," she said.