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Hydrogen sulfide is a chemical compound with the formula H 2 S.It is a colorless chalcogen-hydride gas, and is poisonous, corrosive, and flammable, with trace amounts in ambient atmosphere having a characteristic foul odor of rotten eggs. [11]
Mercaptan is a harmless chemical that smells like sulfur or rotten eggs that utility companies add to natural gas to make it easier to detect leaks, according to Healthline, a medical information ...
Piedmont uses mercaptan, also is known as methanethiol, to give natural gas “a distinctive smell of rotten eggs,” the utility said. Natural gas has no smell. Natural gas has no smell.
On the not-so-bad days, she says she often deals with a dull headache or burning eyes. Some mornings, she wakes up gagging or coughing. ... a gas that smells like rotten eggs and can cause health ...
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 ...
Ethanethiol (EM), commonly known as ethyl mercaptan is used in liquefied petroleum gas (LPG) and resembles odor of leeks, onions, durian, or cooked cabbage; Methanethiol, commonly known as methyl mercaptan, is added to natural gas as an odorant, usually in mixtures containing methane. Its smell is reminiscent of rotten eggs or cabbage.
Los Angeles County officials attribute the foul odor to a toxic, colorless gas called hydrogen sulfide. An invisible gas that smells like 'rotten flesh sitting in the sun' is causing headaches and ...
2 S smells like rotten eggs but at 50-100 ppm it smells cloyingly sweet. At a level above 100 ppm, H 2 S paralyses the olfactory nerve (sense of smell) almost instantly and, as the gas is effectively invisible, it would not be noticed despite it leading to vomiting and breathlessness. At 200 ppm respiratory failure occurs within seconds.
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