sec-Butyl mercaptan
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."
Biomedical References
Exposure Assessment
MAK
2 ppm
Vapor Pressure
80.7 mm Hg
Explanatory Notes
The Guide in the Emergency Response Guidebook is for "Butyl mercaptan." VP from ChemIDplus;
NFPA
may ignite at ambient temp
Adverse Effects
Other Poison
Chemical Asphyxiant
Diseases, Processes, and Activities Linked to This Agent
Diseases
Occupational diseases associated with exposure to this agent:
Processes
Industrial Processes with risk of exposure: