Propanethiol

Propanethiol[1]
Names
Preferred IUPAC name
Propane-1-thiol
Other names
n-Propylthiol
1-Propanethiol
Propan-1-thiol
Propyl mercaptan
Mercaptan C3
Identifiers
107-03-9
3D model (Jmol) Interactive image
ChEBI CHEBI:8473[2]
ChemSpider 7560[3]
ECHA InfoCard 100.003.142
UNII 4AB0N08V2H YesY
Properties
C3H8S
Molar mass 76.16 g·mol−1
Appearance Colorless to pale yellow liquid
Odor cabbage-like[4]
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)
Slight[4]
Vapor pressure 155 mmHg[4]
Acidity (pKa) 8
Hazards
Flash point −21 °C; −5 °F; 253 K[4]
US health exposure limits (NIOSH):
PEL (Permissible)
 none[4]
REL (Recommended)
 C 0.5 ppm (1.6 mg/m3) [15-minute][4]
IDLH (Immediate danger)
 N.D.[4]
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 an herbicide.[5] 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.[6][7]

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.

References

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