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

ROTUBA 21 Cellulose Acetate

ROTUBA 21 Cellulose Acetate is a classic thermoplastic cellulose organic acid ester, synthesized by acetylation with acetic anhydride and presented as powder. It has outstanding rigidity and strength, light transmittance over 90% and haze below 8.5%, suitable for injection molding, extrusion and other molding processes

Features Of ROTUBA 21 Cellulose Acetate

  1. Excellent Optical Performance - Light transmittance over 90%, haze below 8.5%, suitable for optical lenses, transparent packaging and other scenarios requiring high transparency.

  2. Ultra - High Rigidity and Strength - Tensile strength 66.2MPa, flexural strength 71.7MPa, flexural modulus 2160MPa, suitable for forming high structural strength components.

  3. Efficient Molding Adaptability - Melt flow rate 1.4g/10min, excellent melt fluidity, suitable for injection molding/extrusion/thermoforming, shortening production cycle and reducing processing cost.

  4. Stable Environmental Resistance - Water absorption rate 2.3-2.6%, controllable heat distortion temperature, stable size after molding, suitable for various working conditions.

Typical Applications Of ROTUBA 21 Cellulose Acetate

  1. Fine Chemical Deep Processing - Suitable for compounding and separation membrane preparation in the field of fine chemical industry, meeting the requirements of chemical materials for stability and purity.

  2. Optical Transparent Components - Used for spectacle lenses and optical instrument shells, high light transmittance ensures optical performance and improves product texture.

  3. Electronic and Electrical Components - Suitable for electronic component shells and insulation components, high rigidity ensures structural stability, and good insulation performance ensures use safety.

  4. Automotive Interior Components - Used for automotive interior decorative parts and instrument panel components, meeting the requirements

Specifications Of ROTUBA 21 Cellulose Acetate

Chemical NameCellulose Acetate
CAS Number9004-35-7
Chemical Formula[C₆H₇O₂(OH)₃₋ₘ(OOCCH₃)ₘ] (m=0-3)
Physical FormPowder
Specific Gravity1.31 g/cm³
Rockwell Hardness96R
Tensile Strength66.2 MPa (Yield)66.2 MPa (Break)
Flexural Strength (Yield)71.7 MPa
Flexural Modulus2160 MPa


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