Propargyl alcohol

Propargyl alcohol, or 2-propyn-1-ol, is an organic compound with the formula C3H4O. It is the simplest stable alcohol containing an alkyne functional group. Propargyl alcohol is a colorless viscous liquid that is miscible with water and most polar organic solvents.

Propargyl alcohol
Names
Preferred IUPAC name
Prop-2-yn-1-ol
Other names
propynol, 2-propynol, 2-propyn-1-ol, hydroxymethylacetylene.
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.003.157
EC Number
  • 203-471-2
KEGG
RTECS number
  • UK5075000
UNII
UN number 1986 2929
  • InChI=1S/C3H4O/c1-2-3-4/h1,4H,3H2 Y
    Key: TVDSBUOJIPERQY-UHFFFAOYSA-N Y
  • InChI=1/C3H4O/c1-2-3-4/h1,4H,3H2
    Key: TVDSBUOJIPERQY-UHFFFAOYAE
  • C#CCO
Properties
C3H4O
Molar mass 56.064 g·mol−1
Appearance Colorless to straw-colored liquid
Odor geranium-like
Density 0.9715 g/cm3
Melting point −51 to −48 °C (−60 to −54 °F; 222 to 225 K)
Boiling point 114 to 115 °C (237 to 239 °F; 387 to 388 K)
miscible
Vapor pressure 12 mmHg (20 °C)
Hazards
GHS labelling:
Danger
H226, H301, H310, H314, H330, H373, H411
P210, P233, P240, P241, P242, P243, P260, P261, P264, P270, P271, P273, P280, P301+P310, P301+P330+P331, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P310, P311, P312, P321, P322, P330, P361, P363, P370+P378, P391, P403+P233, P403+P235, P405, P501
NFPA 704 (fire diamond)
3
3
3
Flash point 36 °C; 97 °F; 309 K (open cup)
NIOSH (US health exposure limits):
PEL (Permissible)
 none
REL (Recommended)
 TWA 1 ppm (2 mg/m3) [skin]
IDLH (Immediate danger)
 N.D.
Safety data sheet (SDS) External SDS
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YN ?)
Infobox references
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