Agent Name

tert-Butyl mercaptan

Alternative Name

2-Methyl-2-propanethiol

CAS Number

75-66-1

Formula

C4-H10-S

Major Category

Other Classes

Synonyms

2-Methyl-2-propanethiol; 1,1-Dimethylethanethiol; 2-Isobutanethiol; 2-Propanethiol, 2-methyl-; t-Butylmercaptan; tert-Butanethiol; t-Butyl mercaptan; tert-Butylmercaptan; tert-Butylthiol; tertiary-Butyl mercaptan; [ChemIDplus] UN2347

Category

Thiols

Description

Liquid with a strong skunky odor; [Merck Index] Clear colorless liquid with an unpleasant odor; [MSDSonline]

Sources/Uses

Used as an odorant for natural gas, a chemical intermediate, and a bacterial nutrient; [HSDB]

Comments

An eye and respiratory tract irritant; Inhalation of high concentrations can cause CNS depression; [ICSC] May cause mild skin and eye irritation, based on animal studies; Inhalation of high concentrations can cause CNS depression; [CHEMINFO] An irritant; May cause serious eye injury; [MSDSonline] See "THIOLS."

Exposure Assessment
Vapor Pressure

181 mm Hg

Odor Threshold Low

0.00081 ppm

Lethal Concentration

LC50 (rat) = 22,200 ppm/4h

Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Butyl mercaptan." Odor threshold (100% recognition) from CHEMINFO;

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
Other Information

No other related information on this agent was found.