Agent Name

sec-Butyl mercaptan

Alternative Name

2-Butanethiol

CAS Number

513-53-1

Formula

C4-H10-S

Major Category

Other Classes

Synonyms

2-Butanethiol; 1-Methyl-1-propanethiol; 2-Butyl mercaptan; 2-Butylmercaptan; 2-Mercaptobutane; sec-Butanethiol; sec-Butyl thioalcohol; sec-Butyl thiol; secondary Butylmercaptan; [ChemIDplus] UN2347

Category

Thiols

Description

Liquid with a strong skunk-like odor; [Merck Index] Clear colorless liquid; [MSDSonline]

Sources/Uses

Used as odorant for natural gas and to make Cadusafos; [HSDB]

Comments

Emergency treatment: "Butyl mercaptan"; Butyl mercaptan is a mucous membrane irritant with a repulsive odor detectable at sub-toxic concentrations; It causes narcosis and paralysis; It causes pulmonary edema in animals subjected to near lethal doses; [HSDB] May cause moderate eye irritation, based on animal studies; Inhalation of high concentrations can cause CNS depression; [CHEMINFO] An irritant; Exposure may cause CNS depression; [MSDSonline] See "1-Butanethiol." See "THIOLS."

Exposure Assessment
Vapor Pressure

80.7 mm Hg

Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Butyl mercaptan."

Adverse Effects
Other Poison

Chemical Asphyxiant

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: