Allyl Chloride

Cas Number


Other Names




The formula



Allyl chloride is the organic compound with the formula CH2=CHCH2Cl. This colorless liquid is insoluble in water but soluble in common organic solvents. It is mainly converted to epichlorohydrin, used in the production of plastics. It is a chlorinated derivative of propylene. It is an alkylating agent, which makes it both useful and hazardous to handle.

Physical and Chemical Properties
Physical state and appearance Liquid
Odor Pungent. Irritant. Sharp
Color Clear Colorless
Boiling Point 45°C (113°F)
Critical Temperature 241.11°C (466°F)
Flash point CLOSED CUP: -31.7°C (-25.1°F). OPEN CUP: -28.9°C (-20°F)
Melting Point -135.5°C (-211.9°F)
Specific Gravity 0.94 (Water = 1)
Vapor Pressure 39.3 kPa (@ 20°C)
Vapor Density 2.6 (Air = 1)
Odor Threshold 0.47 ppm
Water/Oil Dist. Coeff: The product is more soluble in water; log(oil/water) = -0.2
Solubility Very slightly soluble in cold water
Purity Wt% Min 98.5
Moisture Wt% Max 0.02

1. Allyl chloride is a chemical intermediate mainly used in the manufacture of epichlorohydrin. It is also used in the production of allylic ethers, esters, silanes and quaternary ammonium derivatives. In the laboratory, allyl chloride is a common alkylating agent, useful in the manufacture of pharmaceuticals and pesticides. Illustrative of its reactivity include its cyanation to allyl cyanide (CH2=CHCH2CN), reductive coupling to give diallyl, oxidative addition to palladium to give allylpalladium chloride dimer, (C3H5)2Pd2Cl2, and dehydrohalogenation to cyclopropene.

2. Chemical synthesis - Allyl chloride is the main reactant for the production of epichlorohydrin (please see that product in our catalog). Allyl chloride is used in the synthesis of allyl and diallyl ethers and esters, cross-linking agents, elastomers, chelating agents, flavors, fragrances, surfactants, etc.

3. Pharmaceutical industry - Allyl chloride is used in the chemical synthesis of complex molecules for the pharmaceutical industry.

4. Rubbers - Allylic silanes are very compatible with resins and inorganic materials. They are used in particular to improve the effectiveness of rubbers. A new application is the "green" tires, especially designed to reduce fuel consumption of cars.

5. Water treatment chemicals - Allyl chloride is a reactant for the production of poly DADMACs (diallyl dimethyl ammonium chloride polymerized), used for flocculation and clarification of water and wastewater.