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mercaptan

mercaptan (mərkăp´tăn) or thiol (thī´ōl), any of a class of organic compounds containing the group -SH bonded to a carbon atom. The volatile low-molecular-weight mercaptans have disagreeable odors. Mercaptans are found in crude petroleum, and methyl mercaptan is produced as a decay product of animal and vegetable matter. They also are produced by certain plants and animals; e.g., allyl mercaptan is released when onions are cut, butanethiol (butyl mercaptan) derivatives are present in skunk secretion, and mercaptans are among the sulfur compounds causing the disagreeable odor of flatus. T-butyl mercaptan blends are often added to the odorless natural gas used for cooking and serve to warn of gas leaks. Mercaptans take part in a wide variety of chemical reactions. Their principal uses are in jet fuels, pharmaceuticals, and livestock-feed additives.

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"mercaptan." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 20 Nov. 2017 <http://www.encyclopedia.com>.

"mercaptan." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (November 20, 2017). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/mercaptan

"mercaptan." The Columbia Encyclopedia, 6th ed.. . Retrieved November 20, 2017 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/mercaptan

thiol

thiol: see mercaptan.

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"thiol." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 20 Nov. 2017 <http://www.encyclopedia.com>.

"thiol." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (November 20, 2017). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/thiol

"thiol." The Columbia Encyclopedia, 6th ed.. . Retrieved November 20, 2017 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/thiol

thiol

thiol See SULPHYDRYL.

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"thiol." A Dictionary of Plant Sciences. . Encyclopedia.com. 20 Nov. 2017 <http://www.encyclopedia.com>.

"thiol." A Dictionary of Plant Sciences. . Encyclopedia.com. (November 20, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/thiol

"thiol." A Dictionary of Plant Sciences. . Retrieved November 20, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/thiol

thiol

thiol See SULPHYDRYL.

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"thiol." A Dictionary of Zoology. . Encyclopedia.com. 20 Nov. 2017 <http://www.encyclopedia.com>.

"thiol." A Dictionary of Zoology. . Encyclopedia.com. (November 20, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/thiol-0

"thiol." A Dictionary of Zoology. . Retrieved November 20, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/thiol-0