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Technical Data Sheet
Eastman™ Acetic Anhydride, Reagent Grade

  • Fragrance
  • Pharmaceutical chemicals
  • Process additives

Product Description
Acetic anhydride ((CH3CO)2O) is manufactured by Eastman and supplied in various grades. It is available in reagent grade, as well as a kosher product that may be used in foods as a reactant only. Acetic anhydride is available in tank trucks, tank cars and 55-gallon drums.

Typical Properties

PropertyTypical Value, Units
Molecular Weight102.1
Empirical FormulaC4H6O3
Specific Gravity 
     @ 20°C/20°C1.08
Assay97 wt % min.
Boiling Point139.9 °C (283.8 °F)
Freezing Point-73.1 °C (-99.5 °F)
Vapor Pressure 
     @ 20°C4.6 mm Hg
Refractive Index1.3898 n(25°C/D)
     @ 25°C0.91 cP
Coefficient of Expansion 
     @ 20°C0.00145
     in Water, @ 25°CDecomposes
     Water In, @ 25°CDecomposes
Flash Point 
     Tag Closed Cup53 °C (127 °F)
     Tag Open Cup56 °C (132 °F)
Fire Point58 °C (136 °F)
Autoignition Temperature332 °C (630 °F)
Flammability Limits 
     Lower96.2 mg/L
     Upper381 mg/L
     @ 20°C1.08 kg/L (9.02 lb/gal)

Properties reported here are typical of average lots. Eastman makes no representation that the material in any particular shipment will conform exactly to the values given.

Eastman and its marketing affiliates shall not be responsible for the use of this information, or of any product, method, or apparatus mentioned, and you must make your own determination of its suitability and completeness for your own use, for the protection of the environment, and for the health and safety of your employees and purchasers of your products. No warranty is made of the merchantability of fitness of any product, and nothing herein waives any of the Seller's conditions of sale.

2/28/2018 11:35:39 AM