Acetyl chloride is used for acetylation reactions, i.e., the introduction of an acetyl group. Acetyl is an acyl group having the formula-C(=O)-CH3. For further information on the types of chemical reactions compounds such as acetyl chloride can undergo, see acyl halide. Two major classes of acetylations include esterification and the Friedel-Crafts reaction.
- Formula
- C2H3ClO
- Molar mass
- 78.495 g/mol
- CAS Number
- 75-36-5
- Density
- 1.104 g/mL at 25°C (77°F)
- Purity/Grade
- 98% (Reagent)
- Appearence
- Liquid
- Melting point/freezing point
- Melting point/range: - 112°C (-170°F) - lit.
- Initial boiling point and boiling range
- 52°C (126°F) - lit.
- Flash point
- 5°C (41°F) - closed cup
- Vapour pressure
- 805.765hPa (604.373mmHg) at 20°C (68°F); 2,228.432hPa (1,671.461mmHg) at 55°C (131°F)
- Vapour density
- 2.71 - (Air = 1.0)