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Technical Data Sheet
Eastman™ Cellulose Acetate (CA-398-3)

Applications

HTF - pharmaceutical processing
Auto OEM
Auto refinish
Automotive
Other-LCD displays

Product Description

Eastman Cellulose Acetate (CA-398-3) is one of the lower viscosity solution grades of cellulose acetate. The average ASTM viscosity of CA-398-3 is 3 seconds. Eastman CA-398-3 is supplied in the form of a fine, dry, free-flowing powder. This multipurpose rheology enhancer provides high strength and good resistance to ultraviolet light, heat, oils and greases. Useful in lacquers for glass, plastic, wire and release coatings. It may be blended with appropriate solvents, plasticizers, and other modifying resins to formulate coatings. When dissolved in appropriate solvents selected for CA-398-3, a clear, colorless solution is produced.

Eastman CA-398-3 is based on cellulose, one of the most abundant natural renewable resources. The calculated approximate bio-content value of 55% for Eastman CA-398-3 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.

For applications that require food contact compliance, please refer to Eastman CAB-398-3, Food Contact.

Typical Properties

Property	Typical Value, Units
General
Viscosity^a
s	3
Poise	11.4
Acetyl Content	39.8 wt %
Hydroxyl Content	3.5 wt %
Moisture Content	3.0 max %
Tg^b	180 °C
Bulk Density
Poured	320 kg/m³ (20 lb/ft³)
Tapped	400 kg/m³ (25 lb/ft³)
Specific Gravity	1.31
Acidity
as Acetic Acid	0.1 wt % max.
Ash Content	0.05 %
Refractive Index	1.475
Dielectric Strength	669 kv/cm (1.7 kv/mil)
Tukon Hardness	26 Knoops
Combined Acetic Acid Content	55.5 %
Wt/Vol	1.31 kg/L (10.9 lb/gal)

^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

Comments
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 4:55:44 PM