Agent Name

Methyl thiocyanate

CAS Number

556-64-9

Formula

C2-H3-N-S

Major Category

Pesticides

Synonyms

Methane, thiocyanato-; Methyl rhodanate; Methyl sulfocyanate; Methylrhodanid [German]; Methylthiokyanat [Czech]; Thiocyanic acid, methyl ester; [ChemIDplus] UN1992

Category

Other Insecticides

Description

Colorless liquid with an odor of onions; [Merck Index] Colorless or pale yellow liquid; [MSDSonline]

Sources/Uses

Used as an agricultural insecticide, fumigant, pharmaceutical intermediate, and research chemical; [HSDB]

Comments

Releases cyanide after absorption into the body; Onset of symptoms may be delayed; [HSDB] Causes somnolence and convulsions in lethal dose studies of animals; [RTECS] A fast acting poison; [CAMEO] An irritant and lachrymator; Toxic by ingestion, inhalation, or skin absorption; May cause burns after skin contact and lung edema after inhalation; [Aldrich MSDS]

Exposure Assessment
Vapor Pressure

12.1 mm Hg

Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Flammable liquid, toxic, n.o.s."

Adverse Effects
Lacrimator

Yes

Toxic Pneumonitis

Yes

Other Poison

Chemical 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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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: