Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Eastman CA-398-6 Cellulose Acetate

Eastman CA-398-6 Cellulose Acetate is a high-purity, low-viscosity grade in Eastman’s CA series, designed for precision coating, inkjet media, and optical film applications. It offers excellent clarity, thermal stability, and solution processability in common solvents like acetone and ethyl acetate—ideal for demanding industrial and specialty film uses.
  • eastman ca 398 6 cellulose acetate_4d4e382d
  • eastman ca 398 6 cellulose acetate_4d4e382d

Features Of Eastman CA-398-6 Cellulose Acetate

  1. High acetate content (≈39.8% acetyl) for enhanced solubility in common organic solvents including acetone, ethyl acetate, and methyl ethyl ketone.

  2. Excellent film-forming capability with balanced toughness, clarity, and surface gloss for precision coating applications.

  3. Good thermal stability and low moisture absorption compared to lower-substituted cellulose esters.

  4. Consistent batch-to-batch rheology and molecular weight distribution, ensuring reliable processability in extrusion and solution casting.

  5. USP Class VI and FDA-compliant for select medical device and pharmaceutical packaging uses where regulatory acceptance is required.

Typical Applications Of Eastman CA-398-6 Cellulose Acetate

  1. Transparent protective coatings for optical lenses, display filters, and automotive instrument panels.

  2. Base resin in premium cigarette filter tow for controlled filtration efficiency and pressure drop performance.

  3. Binders and film formers in water-based and solvent-based inkjet-receptive coatings for high-resolution printing media.

  4. Component in biodegradable packaging films requiring clarity, stiffness, and compatibility with composting conditions.

  5. Matrix material for controlled-release pharmaceutical films and transdermal patch backings.

Specifications Of Eastman CA-398-6 Cellulose Acetate

Chemical TypeCellulose acetate homopolymer
Product FormWhite to off-white granular solid
AppearanceFree-flowing pellets with uniform size distribution
Acetyl Content39.6–40.0 wt% (nominal 39.8%)
SolubilitySoluble in acetone, MEK, ethyl acetate, chloroform; insoluble in water and aliphatic hydrocarbons
Viscosity (25°C, 6% w/w in acetone)5.8–6.4 cP
Moisture Content (as received)≤3.5 wt%
Residue on Ignition≤0.15 wt%


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