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Technical Data Sheet

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Product Description

Eastman Cellulose Acetate (CA-320S) is a cellulose ester with a high hydroxyl content. When CA-320S is dissolved in appropriate solvents, a clear, colorless solution is produced. It is supplied as pellets.

Eastman CA-320S is based on cellulose, one of the most abundant natural renewable resources. The calculated approximate bio-content value of 63% for Eastman CA-320S was determined by using six bio-based carbon atoms per anhyroglucose unit divided by the total number of carbons per anhyroglucose unit. Although the value reported is not specifically measured for bio-carbon, it can be estimated based on typical partition data.

Typical Properties

PropertyTypical Value, Units
Acetyl Content32.0 wt %
Hydroxyl Content8.7 wt %
Moisture Content3.0 max %
Tgb180 °C
Specific Gravity1.31
Free-acidity1000 max ppm
Wt/Vol1.31 kg/L (10.9 lb/gal)
Combined Acetic Acid Content44.7 %

aViscosity determined by ASTM Method D 1343. Results converted to poises (ASTM Method D 1343) using the solution density for Formula A as stated in ASTM Method D 817 (20% Cellulose ester, 72% acetone, 8% ethyl alcohol).
bGlass Transition Temperature

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.

8/24/2023 4:59:46 PM