C4H10S
90.19 g/mol
Industrial ChemicalDanger
2-Butanethiol
CAS513-53-1EC208-165-2
Category
Industrial Chemical
Compound Class
Other
Primary Use
Odorant for natural gas
2-Butanethiol is an organosulfur compound primarily used as an odorant for natural gas to enable leak detection by scent.
Odorant for natural gasIntermediate in the manufacture of Cadusafos
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
ApplicationSame Use
Ethanethiol
CAS75-08-1
Odorant for natural gas
ApplicationSame Use
1-butanethiol
CAS109-79-5
Odorant for natural gas
ReferenceSame Category
Barium carbonate
CAS513-77-9
Manufacture of glass, ceramics, and enamels
ReferenceSame Category
Cobalt(II) carbonate
CAS513-79-1
Ceramics and pigment manufacture
ReferenceSame Category
Propylene glycol 1-butyl ether
CAS5131-66-8
Solvent for paints and coatings
ReferenceSame Category
Methyltricaprylylammonium chloride
CAS5137-55-3
phase transfer catalyst and extraction reagent
Safety Reference
Danger
H225Highly flammable liquid and vapour
H315Causes skin irritation
H317May cause an allergic skin reaction
H319Causes serious eye irritation
H335May cause respiratory irritation
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
Regulatory Compliance1
- CN Catalogue of Hazardous ChemicalsCNRegulation
Customs Tariff Classification
The international HS code for 2-Butanethiol (CAS 513-53-1) is 2930.90.
HS code (international, 6-digit)
2930.90
EU CN code (8-digit)
2930 90 95
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
butane-2-thiol
InChIKey
LOCHFZBWPCLPAN-UHFFFAOYSA-N
SMILES
CCC(C)S
Synonyms (16)
- 1-methyl-1-propanthiol
- 1-methyl-1-propyl mercaptan
- 1-methylpropanethiol
- 1Methyl1propanethiol
- 2-Butanethiol
- 2-Butylthiol
- 2Butylmercaptan
- 2mercaptobutane
- 3-METHYL-2-PROPANETHIOL
- SEC-BUTYL MERCAPTAN
- sec-Butyl hydrosulfide #
- sec-Butyl mecaptan
- secButanethiol
- secButyl thioalcohol
- secButyl thiol
- secondary Butylmercaptan
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