1-Pentanethiol

Pentane-1-thiol
Names
Preferred IUPAC name
Pentane-1-thiol
Other names
1-Pentanethiol
Pentyl mercaptan
Amyl mercaptan
n-Pentyl mercaptan
n-Amyl mercaptan
Thiopentyl alcohol
Thioamyl alcohol
Mercaptopentane
n-Pentanethiol
1-Mercaptopentane[1]
Identifiers
3D model (JSmol)
Abbreviations PeSH or n-PeSH
ChEBI
ChemSpider
ECHA InfoCard 100.003.446
EC Number
  • 203-789-1
RTECS number
  • SA3150000
UNII
UN number 1111
  • InChI=1S/C5H12S/c1-2-3-4-5-6/h6H,2-5H2,1H3
    Key: ZRKMQKLGEQPLNS-UHFFFAOYSA-N
  • SCCCCC
Properties
C5H12S
Molar mass 104.21 g·mol−1
Density 0.8421 g/cm3 (at 20 °C)[1]
Melting point −75.7 to −75.69[2] °C (−104.26 to −104.24 °F; 197.45 to 197.46 K)
Boiling point 126.6 °C (259.9 °F; 399.8 K)
Hazards
GHS labelling:
GHS02: Flammable GHS07: Exclamation mark[2]
Danger[2]
H225, H302, H332[2]
P210, P233, P240, P241, P242, P243, P261, P264, P270, P271, P280, P301+P317, P303+P361+P353, P304+P340, P317, P330, P370+P378, P403+P235, P501[2]
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformFlammability 3: Liquids and solids that can be ignited under almost all ambient temperature conditions. Flash point between 23 and 38 °C (73 and 100 °F). E.g. gasolineInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
2
3
0
Flash point 18 °C; 65 °F; 291 K
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Pentane-1-thiol, also known as pentyl mercaptan or amyl mercaptan, is an organosulfur compound with the formula C5H11S or CH3(CH2)4SH. It is classified as a thiol.

Properties

See also

References

  1. 1 2 "1-Pentanethiol". CAS Common Chemistry. Retrieved 6 May 2026.
  2. 1 2 3 4 5 "Pentane-1-thiol". PubChem. Retrieved 15 May 2026.
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