methyl mercaptan


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meth·yl mer·cap·tan

formed in the intestines by bacterial action on sulfur-containing proteins and appears in urine after ingestion of asparagus (contributing to the characteristic odor); also used in the manufacture of various organic sulfur-containing pesticides and fungicides.
References in periodicals archive ?
On November 15, 2014, an incident occurred and nearly 24,000 pounds of methyl mercaptan were released within the Lannate unit at its La Porte, Texas facility.
Investigators said there were no methyl mercaptan detectors on the third floor of the Lannate unit, where Wise first opened a valve and the chemical spewed out.
Numerous studies have found a relationship between the mechanical removal of tongue coating and the reduction of both organoleptic scores and VSC levels, including reduction in methyl mercaptan levels and the methyl mercaptan/hydrogen sulphide ratio, in both healthy and periodontitis patients, with or without halitosis.
Amongst VSC the hydrogen sulfide (H S) and methyl mercaptan (CH SH) are chiefly accountable for causing objectionable mouth odor.
The subjects were divided by levels of methyl mercaptan into high and low halitosis groups.
The substance was thought to be methyl mercaptan, added to natural gas to give it an odour and harmful in large amounts.
According to the website, many chemicals cause the smell in bad breath including hydrogen sulphide, methyl mercaptan and putrescine.
Presence of harmful organic sulfur species like methyl mercaptan and di-methyl sulfide effectively increases the size of the SCC zone shown in Fig.
Effectively breaks down and eliminates harmful gases, including hydrogen sulfide, sulfur dioxide, ammonia, ethyl mercaptan and methyl mercaptan. ECOSORB is used in a variety of settings, including wastewater treatment plants and industrial facilities such as asphalt processing plants, food processing plants and composite fabrication facilities, among others.
These trials, carried out by a leading British manufacturer of ready-meal poultry products tested the effectiveness of their Odex4 system in reducing emissions of hydrogen sulphide, ethylamine, ethyl mercaptan and methyl mercaptan from the factory.
VOCs affect the nitrogen photolytic cycle and help produce ground-level ozone and hazardous air pollutants, as well as odorous air emissions such as hydrogen sulfide and methyl mercaptan (typically produced by wastewater treatment plants and garbage piles).
Factory officials said methyl mercaptan, a poisonous gas, can be present during pulp production.