Propanethiol

Propanethiol

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Names
IUPAC name Propane-1-thiol
Other names MERCAPTAN C3 n-Propylthiol 1-Propanethiol Propan-1-thiol Propyl mercaptan
Identifiers
CAS Number	107-03-9
ChEBI	CHEBI:8473
ChemSpider	7560
Jmol 3D model	Interactive image
SMILES CCCS
Properties
Chemical formula	C3H8S
Molar mass	76.16 g·mol−1
Appearance	Colorless to pale yellow liquid
Odor	cabbage-like
Density	0.84 g/mL
Melting point	−113 °C (−171 °F; 160 K)
Boiling point	67 to 68 °C (153 to 154 °F; 340 to 341 K)
Solubility in water	Slight
Vapor pressure	155 mmHg (25 °C)
Acidity (pKa)	8
Vapor pressure	{{{value}}}
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Propanethiol is an organic compound with the molecular formula C₃H₈S. It belongs to the group of thiols. It is a colorless liquid with a strong, offensive odor. It is moderately toxic and is less dense than water and slightly soluble in water. It is used as a chemical intermediate and a herbicide. It is highly flammable and it gives off irritating or toxic fumes (or gases) in a fire. Heating it will cause rise in pressure with risk of bursting.

Chemistry

Propanethiol is chemically classified among the thiols, which are organic compounds with molecular formulas and structural formulas similar to alcohols, except that sulfur-containing sulfhydryl group (-SH) replaces the oxygen-containing hydroxyl group in the molecule. Propanethiol's basic molecular formula is C₃H₇SH, and its structural formula is similar to that of the alcohol n-propanol.