Acids & Salts Available to Source

Acetic Anhydride

Ac2O
CAS 108-24-7 · MF C4H6O3 · MW 102.09 g/mol · UN 1715 (ACETIC ANHYDRIDE)

Acetic anhydride is a highly reactive organic anhydride widely used as an acetylation agent in chemical synthesis.

SDS / TDS Download
CAS Number
108-24-7
Molecular Formula
C4H6O3
Molecular Weight
102.09 g/mol
Material Family
Acids & Salts
Functional Roles
Industries Served
Physical Properties
melting_point
-99.6 u00b0F (NTP, 1992)
boiling_point
283.19 u00b0F at 760 mmHg (NTP, 1992)
density
1.08 (USCG, 1999) - Denser than water; will sink
solubility
Soluble in cold (greater than or equal to 10mg/ml); Decomposes in hot (NTP, 1992)
vapor_pressure
10 mmHg at 96.8 u00b0F (NTP, 1992)
flash_point
121 u00b0F (NTP, 1992)
GHS / SDS Safety Danger
Acute Toxic Flammable Irritant Health Hazard Corrosive
  • H332 (97.4%): Harmful if inhaled [Warning Acute toxicity, inhalation]
  • H370: Causes damage to organs [Danger Specific target organ toxicity, single exposure]
  • H402: Harmful to aquatic life [Hazardous to the aquatic environment, acute hazard]
  • H302: Harmful if swallowed [Warning Acute toxicity, oral]
  • H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]
  • H332 (67.6%): Harmful if inhaled [Warning Acute toxicity, inhalation]
  • H226 (99.8%): Flammable liquid and vapor [Warning Flammable liquids]
  • H331: Toxic if inhaled [Danger Acute toxicity, inhalation]
  • H302 (97.5%): Harmful if swallowed [Warning Acute toxicity, oral]
  • H330 (18.4%): Fatal if inhaled [Danger Acute toxicity, inhalation]
  • H330: Fatal if inhaled [Danger Acute toxicity, inhalation]
  • H318: Causes serious eye damage [Danger Serious eye damage/eye irritation]
  • H226: Flammable liquid and vapor [Warning Flammable liquids]
  • H318 (46.3%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
  • H336: May cause drowsiness or dizziness [Warning Specific target organ toxicity, single exposure; Narcotic effects]
  • H331 (11.6%): Toxic if inhaled [Danger Acute toxicity, inhalation]
  • H314 (100%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
  • H372: Causes damage to organs through prolonged or repeated exposure [Danger Specific target organ toxicity, repeated exposure]
  • H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
  • H335 (10.4%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
  • H226 (100%): Flammable liquid and vapor [Warning Flammable liquids]
  • H332: Harmful if inhaled [Warning Acute toxicity, inhalation]
  • H314 (99.9%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
  • H290: May be corrosive to metals [Warning Corrosive to Metals]
  • H313: May be harmful in contact with skin [Warning Acute toxicity, dermal]
Chemical Identity
CAS Number108-24-7
IUPAC Nameacetyl acetate
InChI KeyWFDIJRYMOXRFFG-UHFFFAOYSA-N
PubChem CID 7918
Synonyms & Trade Names
ACETIC ANHYDRIDE Acetyl acetate Acetanhydride Ethanoic anhydride Acetyl oxide Acetyl anhydride Acetic oxide Acetic acid, anhydride acetic acid anhydride Acetyl ether Anhydride acetique Anidride acetica Octowy bezwodnik Azijnzuuranhydride Essigsaeureanhydrid
Full Description

Acetic anhydride is a highly reactive organic anhydride widely used as an acetylation agent in chemical synthesis.