You are using an unsupported browser. Please upgrade your browser to a newer version to get the best experience on Database of hazardous chemicals.
Record Information
Creation Date2016-05-19 01:31:57 UTC
Update Date2016-11-09 01:09:16 UTC
Accession NumberCHEM004003
Common NameEthanethiol
ClassSmall Molecule
DescriptionEthanethiol, also known as ethyl-mercaptan or ethanethiol sodium salt, is a member of the class of compounds known as alkylthiols. Alkylthiols are organic compounds containing the thiol functional group linked to an alkyl chain. Ethanethiol is soluble (in water) and a very weakly acidic compound (based on its pKa). Ethanethiol is a fruity and sulfurous tasting compound found in potato, which makes ethanethiol a potential biomarker for the consumption of this food product. Ethanethiol may be a unique S.cerevisiae (yeast) metabolite. Ethanethiol, commonly known as ethyl mercaptan, is a clear liquid with a distinct odor. It is an organosulfur compound with the formula CH3CH2SH. Abbreviated EtSH, it consists of an ethyl group (Et), CH3CH2, attached to a thiol group, SH. Its structure parallels that of ethanol, but with sulfur in place of oxygen. The odor of EtSH is infamous. Ethanethiol is more volatile than ethanol due to a diminished ability to engage in hydrogen bonding. Ethanethiol is toxic. It occurs naturally as a minor component of petroleum, and may be added to otherwise odorless gaseous products such as liquefied petroleum gas (LPG) to help warn of gas leaks. At these concentrations, ethanethiol is not harmful .
Contaminant Sources
  • Clean Air Act Chemicals
  • EAFUS Chemicals
  • FooDB Chemicals
  • HPV EPA Chemicals
  • OECD HPV Chemicals
  • STOFF IDENT Compounds
Contaminant TypeNot Available
Chemical Structure
Ethanethiol silver salt (+2)MeSH
Ethanethiol sodium saltMeSH
Ethyl mercaptanMeSH
Chemical FormulaC2H6S
Average Molecular Mass62.134 g/mol
Monoisotopic Mass62.019 g/mol
CAS Registry Number75-08-1
IUPAC Nameethanethiol
Traditional Nameethanethiol
InChI IdentifierInChI=1S/C2H6S/c1-2-3/h3H,2H2,1H3
Chemical Taxonomy
Description belongs to the class of organic compounds known as alkylthiols. These are organic compounds containing the thiol functional group linked to an alkyl chain.
KingdomOrganic compounds
Super ClassOrganosulfur compounds
Sub ClassAlkylthiols
Direct ParentAlkylthiols
Alternative Parents
  • Alkylthiol
  • Hydrocarbon derivative
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External Descriptors
Biological Properties
StatusDetected and Not Quantified
OriginNot Available
Cellular LocationsNot Available
Biofluid LocationsNot Available
Tissue LocationsNot Available
PathwaysNot Available
ApplicationsNot Available
Biological RolesNot Available
Chemical RolesNot Available
Physical Properties
StateNot Available
AppearanceNot Available
Experimental Properties
Melting PointNot Available
Boiling PointNot Available
SolubilityNot Available
Predicted Properties
Water Solubility10.5 g/LALOGPS
pKa (Strongest Acidic)10.23ChemAxon
pKa (Strongest Basic)-9.5ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count0ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area0 ŲChemAxon
Rotatable Bond Count0ChemAxon
Refractivity19.04 m³·mol⁻¹ChemAxon
Polarizability7.25 ųChemAxon
Number of Rings0ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectrum TypeDescriptionSplash Key
Predicted GC-MSPredicted GC-MS Spectrum - GC-MSsplash10-01t9-9000000000-e554801b2c209c96576bView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-03di-9000000000-464950dd0fda35fb38f1View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-03di-9000000000-8b371bbe623ac0de5094View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-004i-9000000000-a30a42ceb451cee5e5d4View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-03e9-9000000000-98911442201d3094f412View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-03di-9000000000-db1ba97523e98f888f3bView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-01q9-9000000000-4e4c2cfefc54912e033aView in MoNA
MSMass Spectrum (Electron Ionization)splash10-01t9-9000000000-144955804fceb52bf28dView in MoNA
1D NMR1H NMR SpectrumNot Available
1D NMR13C NMR SpectrumNot Available
Toxicity Profile
Route of ExposureNot Available
Mechanism of ToxicityNot Available
MetabolismNot Available
Toxicity ValuesNot Available
Lethal DoseNot Available
Carcinogenicity (IARC Classification)Not Available
Uses/SourcesNot Available
Minimum Risk LevelNot Available
Health EffectsNot Available
SymptomsNot Available
TreatmentNot Available
Not Available
DrugBank IDNot Available
HMDB IDNot Available
FooDB IDFDB009365
Phenol Explorer IDNot Available
KNApSAcK IDNot Available
BiGG IDNot Available
BioCyc IDNot Available
METLIN IDNot Available
PDB IDNot Available
Wikipedia LinkEthanethiol
Chemspider IDNot Available
ChEBI IDNot Available
PubChem Compound ID6343
Kegg Compound IDNot Available
ECMDB IDNot Available
Synthesis ReferenceNot Available
MSDSNot Available
General ReferencesNot Available