Agent Name

Dimethyl sulfide

CAS Number

75-18-3

Formula

C2-H6-S

Major Category

Other Classes

Synonyms

Dimethyl sulfide; Dimethyl sulphide; Methane, thiobis-; 2-Thiapropane; DMS; Dimethyl monosulfide; Dimethyl thioether; Dimethylsulfid [Czech]; Exact-S; Methanethiomethane; Methyl monosulfide; Methyl thioether; Methylthiomethane; Sulfure de methyle [French]; Thiobis(methane); Methyl sulfide; [ChemIDplus]

Category

Sulfur Compounds

Description

Colorless liquid with a very unpleasant odor; [ACGIH]

Sources/Uses

Dimethyl sulfide is a common air pollutant of paper mills, sewage treatment plants, and oil refineries. It is used as a food flavoring agent. [ACGIH] Also used as a chemical intermediate, a sulfiding agent, an anti-coking agent, a gas odorant, and a mineral salt solvent; [CHEMINFO]

Comments

Liquid can cause first degree burns after short contact. [CHRIS] Decomposes on heating to release hydrogen sulfide and sulfur oxides; [ICSC] Low toxicity after skin or inhalation exposure; [HSDB] When applied to the skin, under a patch, for 48 hours, 1% dimethyl sulfide in petroleum jelly does not cause skin irritation. Dimethyl sulfide vapor can reach high concentrations at room temperature and act as a simple asphyxiant. It is a skin and respiratory tract irritant and can cause CNS depression after heavy inhalation exposure. From a case report, one worker in a storage tank died after exposure to about 500,000 ppm. The death was attributed to dimethyl sulfide toxicity and simple asphyxiation. [CHEMINFO]

Exposure Assessment
Skin Designation (ACGIH)

No

TLV (ACGIH)

10 ppm

Vapor Pressure

502 mm Hg

Odor Threshold Low

0.0098 ppm

Odor Threshold High

0.02 ppm

Lethal Concentration

LC50 (rat) = 40,250 ppm/4 hr

Explanatory Notes

Boiling point = 37 degrees C; [ICSC] Odor threshold from CHEMINFO;

Reference Link

ICSC: Dimethylsulphide

Flammability (NFPA)

4: Burns readily

Adverse Effects
Neurotoxin

Other CNS Neurotoxin

Other Poison

Simple Asphyxiant

Dermatotoxin

Skin Burns

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

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Chemical Information

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Biomedical References

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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: