It is an organic compound with the chemical formula C2H6S. It is a colorless transparent liquid, slightly soluble in water, and easily soluble in organic solvents such as alkali and ethanol, ether, etc. It is known for its strong, persistent, and irritating garlic odor. It is one of the most odorous substances listed in the Guinness World Records. When the air contains only one part of 50 billion ethyl mercaptan (0.00019mg/L), its odor can be smelled. Usually added to gas, liquefied petroleum gas, etc. as odor indicators.

Colorless oily liquid with a foul odor, freezing point of -7 ℃, boiling point of 200-235 ℃ (atmospheric pressure), 165-166 ℃ (5199, 5Pa), explosion range of 0.7-9.1% (V/V), flash point of 129 ℃, viscosity of 5.3 cps, specific gravity of d20/4 0.854, insoluble in water, soluble in organic solvents such as ethanol, ether, acetone, benzene, gasoline, and esters.

Also known as: lauryl mercaptan; Dodecyl mercaptan is a colorless, water white or light yellow liquid with a slight odor. The main use is as a polymerization regulator for synthetic rubber, synthetic fibers, and synthetic resins; It is also used in the production of PVC stabilizers, drugs, insecticides, fungicides, detergents, surface hydrophobic modifiers, etc.

Also known as 1-mercaptooctane, it is an organic compound with the chemical formula C8H18S. It is mainly used as a polymerization regulator, vulcanization regulator, and can also be used in the production of rubber additives, pharmaceuticals, dyes, pesticides, and as a stabilizer for surfactants and resins.

2-Methyl-2-propanethiol, also known as tert butyl thiol, is an organic compound with the chemical formula C4H10S. It is a colorless transparent liquid, slightly soluble in water, miscible in ethanol, ether, and heptane. It is mainly used as an intermediate in organic synthesis and can also be used to prepare synthetic rubber.