Dimethyl disulfide

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Dimethyl disulfide (DMDS) is an organic compound with the molecular formula CH3SSCH3. It is a flammable liquid with an unpleasant, garlic-like odor. DMDS is a naturally occurring substance but is also manufactured industrially for a range of uses.

Etymology[edit | edit source]

The term "dimethyl disulfide" is derived from its chemical structure. The prefix "di-" in both "dimethyl" and "disulfide" indicates the presence of two methyl groups (CH3) and two sulfur atoms (S), respectively.

Chemical Properties[edit | edit source]

DMDS is a yellowish liquid at room temperature. It has a strong, unpleasant smell, often described as similar to garlic or cabbage. It is less dense than water and its vapors are heavier than air. DMDS is soluble in alcohol and ether, but not in water.

Production and Uses[edit | edit source]

DMDS is produced industrially by the reaction of methanethiol with sulfur in the presence of a base. It is used in the petrochemical industry for the oxidation of hydrocarbons. DMDS is also used as a food additive, a soil fumigant, and a pesticide.

Health Effects[edit | edit source]

Exposure to DMDS can cause irritation to the eyes, skin, and respiratory tract. Ingestion can lead to nausea, vomiting, and diarrhea. Long-term exposure can result in damage to the liver and kidneys.

Related Compounds[edit | edit source]

DMDS is related to other organosulfur compounds such as dimethyl sulfide and dimethyl sulfoxide. These compounds also contain sulfur and methyl groups, but have different chemical structures and properties.

See Also[edit | edit source]

Dimethyl disulfide Resources
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