Propargyl chloride

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Propargyl chloride[1]
Propargyl chloride.svg
IUPAC name
Other names
Propargyl chloride, 3-Chloropropyne, 1-Chloro-2-propyne, 2-Propynyl chloride, Gamma-Chloroallylene, UN 2345
624-65-7 YesY
ChemSpider 21112738 YesY
EC number 210-856-9
Jmol-3D images Image
PubChem 12221
Molar mass 74.51 g·mol−1
Appearance Clear to brown liquid
Density 1.0306 g/cm³
Melting point −78 °C (−108 °F; 195 K)
Boiling point 57 °C (135 °F; 330 K)
EU classification Highly flammable (F+), highly toxic (T+)
R-phrases R23/24/25 R34
S-phrases S16 S23 S24/25 S36/37 S39 S45
NFPA 704
Flammability code 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., gasoline) Health code 3: Short exposure could cause serious temporary or residual injury. E.g., chlorine gas Reactivity code 1: Normally stable, but can become unstable at elevated temperatures and pressures. E.g., calcium Special hazards (white): no codeNFPA 704 four-colored diamond
Flash point 18 °C (64 °F; 291 K)
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

Propargyl chloride, or 3-chloro-1-propyne, is a highly toxic and flammable clear brown liquid with chemical formula CHCCH2Cl. It is miscible with benzene or ethanol and insoluble in water. Its refractive index is 1.4350. Common uses for propargyl chloride include soil fumigation, corrosion prevention, and as an intermediate in organic synthesis.

It reacts with alcohols to form propargyl ethers.

See also[edit]


  1. ^ *Merck Index, 11th Edition, 7820

External links[edit]