File:Ethanethiol-skeletal.svg · Wikimedia Commons · See Wikimedia Commons
ethanethiol
Sign in to saveAlso known as ethyl mercaptan, ethyl sulfhydrate, mercaptoethane
Ethanethiol, commonly known as ethyl mercaptan, is an organosulfur compound with the formula CH3CH2SH. It is a colorless liquid with a distinct odor. 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 in high concentrations. It occurs naturally as a minor component of petroleum, and may be added to otherwise odorless gaseous pr
Chemical data
- Formula
- C2H6S
- Molecular weight
- 62.14 g/mol
- IUPAC name
- ethanethiol
- SMILES
- CCS
- InChIKey
- DNJIEGIFACGWOD-UHFFFAOYSA-N
- XLogP
- 0.9
- Polar surface area
- 1 Ų
- H-bond donors
- 1
- H-bond acceptors
- 1
- Formal charge
- 0
via PubChem
Wikidata facts
- Mass
- 62.019
- Autonomy
- 300
Show 18 more facts
- chemical formula
- C₂H₆S
- canonical SMILES
- CCS
- NIOSH Pocket Guide ID
- 0280
- Commons category
- Ethanethiol
- immediately dangerous to life or health
- 1270
- vapor pressure
- 70.3
- flash point
- -17
- lower flammable limit
- 2.8
- upper flammable limit
- 18.0
- ionization energy
- 9.29
- ceiling exposure limit
- 25
- refractive index
- 1.4310
- surface tension
- 23.08
- dynamic viscosity
- 0.287
- melting point
- -228
- electric dipole moment
- 1.58
- density
- 0.84
- boiling point
- 95
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Article
8 sectionsContents
- Preparation
- Historic methods
- Odor
- Uses
- Reactions
- See also
- References
- External links
Ethanethiol, commonly known as ethyl mercaptan, is an organosulfur compound with the formula CH3CH2SH. It is a colorless liquid with a distinct odor. 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 in high concentrations. 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.
==Preparation== Ethanethiol is prepared by the reaction of ethylene with hydrogen sulfide in the presence of various catalysts. It is also prepared commercially by the reaction of ethanol with hydrogen sulfide gas over an acidic solid catalyst, such as alumina.