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Cylinder of methanethiol gas. Methanethiol is mainly used to produce the essential amino acid methionine, which is used as a dietary component in poultry and animal feed. [10] Methanethiol is also used in the plastic industry as a moderator for free-radical polymerizations [10] and as a precursor in the manufacture of pesticides.
Dimethyl sulfide has a characteristic odor commonly described as cabbage-like.It becomes highly disagreeable at even quite low concentrations. Some reports claim that DMS has a low olfactory threshold that varies from 0.02 to 0.1 ppm [clarification needed] between different persons, but it has been suggested that the odor attributed to dimethyl sulfide may in fact be due to disulfides ...
DMSP is broken down by marine microbes to form two major volatile sulfur products, each with distinct effects on the environment. One of its breakdown products is methanethiol (CH 3 SH), which is assimilated by bacteria into protein sulfur. Another volatile breakdown product is dimethyl sulfide (CH 3 SCH 3; DMS).
This reaction is rapid and stoichiometric, with the addition of one mole of thiol releasing one mole of TNB. The TNB 2− is quantified in a spectrophotometer by measuring the absorbance of visible light at 412 nm, using an extinction coefficient of 14,150 M −1 cm −1 for dilute buffer solutions, [4] [5] and a coefficient of 13,700 M −1 cm −1 for high salt concentrations, such as 6 M ...
R-CH=CH 2 + H-SR' → R-CH 2-CH 2-S-R' This reaction is often catalysed by free radicals produced from a photoinitiator. [6] Sulfides can also be prepared by many other methods, such as the Pummerer rearrangement. Trialkysulfonium salts react with nucleophiles with a dialkyl sulfide as a leaving group: Nu − + R 3 S + → Nu-R + R 2 SR 1
The bond dissociation energies for dimethyl sulfide and dimethyl ether are respectively 73 and 77 kcal/mol (305 and 322 kJ/mol). Sulfides are typically prepared by alkylation of thiols. Alkylating agents include not only alkyl halides, but also epoxides, aziridines, and Michael acceptors. [6] They can also be prepared via the Pummerer ...
Dimethyl disulfide (DMDS) is an organic chemical compound with the molecular formula CH 3 SSCH 3. It is a flammable liquid with an unpleasant, garlic -like odor resembling that of "leaking gas". The compound is colorless although impure samples often appear yellowish.
Dimethyl trisulfide (DMTS) is an organic chemical compound and the simplest organic trisulfide, with the chemical formula CH 3 SSSCH 3. [ 2 ] [ 3 ] It is a flammable liquid with a foul odor, which is detectable at levels as low as 1 part per trillion.