A

Acetyl chloride

IUPAC: acetyl chloride

C2H3ClO Organic Compounds CAS 75-36-5
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Quick Reference
Formula / NotationC2H3ClO
CAS Number75-36-5
Molecular Weight78.50
Melting Point-170 °F (NTP, 1992)
Boiling Point123.6 °F at 760 mmHg (NTP, 1992)
Density1.1039 at 69.8 °F (USCG, 1999) - Denser than water; will sink
SolubilityReaction (NTP, 1992)
AppearanceAcetyl chloride appears as a colorless, fuming liquid with a pungent odor. Density 9.2 lb / gal. Flash point 40 °F. Vapor, which is heavier than air, irritates the eyes and mucous membranes. Corro...
Also Known As75-36-5; Ethanoyl chloride; Acetic chloride; Acetic acid chloride; Acetylchloride; Acetic acid, chloride; QD15RNO45K; DTXSID2023852; CHEBI:37580; RefChem:5510
CategoryOrganic Compounds

What is Acetyl chloride?

Acetyl chloride is an acyl chloride. It is functionally related to an acetic acid.

Formula & Notation

C2H3ClO

IUPAC Name: acetyl chloride

Other Names / Synonyms: 75-36-5; Ethanoyl chloride; Acetic chloride; Acetic acid chloride; Acetylchloride; Acetic acid, chloride; QD15RNO45K; DTXSID2023852; CHEBI:37580; RefChem:5510

Properties & Characteristics

Appearance: Acetyl chloride appears as a colorless, fuming liquid with a pungent odor. Density 9.2 lb / gal. Flash point 40 °F. Vapor, which is heavier than air, irritates the eyes and mucous membranes. Corro.... Molecular formula: C2H3ClO. Molecular weight: 78.50 g/mol. Boiling point: 123.6 °F at 760 mmHg (NTP, 1992). Melting point: -170 °F (NTP, 1992). Density: 1.1039 at 69.8 °F (USCG, 1999) - Denser than water; will sink. Solubility: Reaction (NTP, 1992). Vapor pressure: 135 mmHg at 45.5 °F (NTP, 1992). LogP: 0.8.

Physical Data

PropertyValue
Melting Point-170 °F (NTP, 1992)
Boiling Point123.6 °F at 760 mmHg (NTP, 1992)
Density1.1039 at 69.8 °F (USCG, 1999) - Denser than water; will sink
Molecular Weight78.50
SolubilityReaction (NTP, 1992)
AppearanceAcetyl chloride appears as a colorless, fuming liquid with a pungent odor. Density 9.2 lb / gal. Flash point 40 °F. Vapor, which is heavier than air, irritates the eyes and mucous membranes. Corro...

Uses & Applications

Used as an industrial feedstock, solvent, pharmaceutical intermediate, flavoring agent, or chemical building block.

Safety Information

Flammable or irritant. Many organic compounds are flammable liquids or vapours. Keep away from ignition sources. Consult SDS for specific hazard data.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Acetyl chloride
Formula C2H3ClO
CAS Number 75-36-5
Molecular Weight 78.50
Category Organic Compounds
Index All "A" terms
Synonyms 75-36-5; Ethanoyl chloride; Acetic chloride; Acetic acid chloride; Acetylchloride; Acetic acid, chloride; QD15RNO45K; DTXSID2023852; CHEBI:37580; RefChem:5510

Frequently Asked Questions

Acetyl chloride is an acyl chloride. It is functionally related to an acetic acid.

More "A" Terms

4-Aminobenzoic acid C7H7NO2 Absolute Entropy of a Substance S° Absolute Zero 0 K = −273.15°C Absorption Spectrum E = hν; A = εlc Accuracy Acenaphthene C12H10 Acetaldehyde C2H4O Acetic Acid CH₃COOH (C₂H₄O₂) Acetic anhydride C4H6O3 Acetone C3H6O Acetonitrile C2H3N Acetophenone C8H8O
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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.

AllChemicals.info — The Online Chemical Glossary | https://allchemicals.info/chemical/acetyl-chloride

For educational purposes only. Verify all information before use.