Phoenix College - - Chemical Data Sheet
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acetic anhydride
C₄H₆O₃    fw=102.09

Hazards

Poison! Causes severe burns.
Harmful if swallowed or inhaled.

Combustible. Keep away from heat, sparks, and flames.

Do not get in eyes, on skin, on clothing. Avoid breathing vapor. Use with adequate ventilation. Wash thoroughly after handling. Ingestion causes severe burning to mouth and stomach. Inhalation of vapors may cause severe irritation of the respiratory system. Contact with skin or eyes causes severe irritation or burns. (22)

Emergency Procedures

If swallowed, do NOT induce vomiting.

In case of contact, immediately flush eyes or skin with plenty of water for at least 15 minutes while removing contaminated clothing an shoes. (22)

Toxicity

Exposure limits, acute, cancer and reproductive effects:
Causes severe burns. Toxic if swallowed or inhaled. (22)

Contact LD50 (rabbit) 4000 mg/kg (22)
Inhalation ()
Ingestion LD50 (rat) 1780 mg/kg (22)

Flammability and Explosion Hazard

Vapors may flow along surfaces to distant ignition sources and flash back. (22)
Closed containers exposed to heat may explode. (22)

Flashpoint - 54°C (22)
Autoignition Temperature ()
Upper Explosive Limit (UEL) 10.1% (22)
Lower Explosion Limit (LEL) 2.7% (22)
Vapor Density 3.5 (22)

Decomposition

Decomposes on contact with water forming acetic acid. (2)

Decomposition Temperature: ()
Decomposition Products: acetic acid (2)

Chemical Incompatibility

water, strong oxidizers, strong bases, alcohols (22)

Other Properties

Melting Point	-73°C (22)
Boiling Point	139°C (22)
Solubility in Water	very soluble (2)
Density	1.08 g/mL @ 20°C (22)
Other Chemical and Physical Properties: (22)
colorless liquid with strong acetic acid odor

Spill Procedure

Shut off ignition sources. Neutralize and dilute spill. Sweep up and flush area with water. l (4)

Waste Disposal

Dispose with acetic acid waste. (4)

Storage

Store in closed, labeled container in flammable cabinet. (4)