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Cellulose Acetate Butyrate (CAB), commonly known as butyrate, is resistant to ultraviolet rays, has a lower moisture absorption than acetate and has an extremely high impact strength.

Cellulosics, as a group, are characterized by good strength, toughness, and high surface gloss. In addition, they have good chemical resistance, good clarity, sparkle, and will take decoration readily. Cellulose acetate butyrate is tougher than acetate and has lower moisture absorption. It resists weathering and has excellent transparency. Although it is adversely affected by alcohol, alkalis, paint removers, and acetones, it is resistant to most household chemicals. Additionally, CAB is resistant to the harmful effects of ultra-violet radiation.

Emco Industrial Plastics doesn’t claim to represent all of the manufacturers or trade name products listed. This list is intended as a guide of typical materials available for purchase from Emco Industrial Plastics, Inc. For additional information, contact an Emco Industrial Plastics representative by filling out the form below.

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At a Glance

Generic Name
Cellulose Acetate Butyrate

Available In
Sheet, Tube, Film, Other

FDA Compliant, Weather Resistant, ITAR Registered

Tenite®, Uvex®, Excelon®, Spartech®

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Technical Information

Stock Products Properties Applications Advantages

Stock Products

Sheet 0.060″ – 0.25″ TH Std sheet sizes; CTS Clear
Tube 1/16″ ID – 6″ ID; 1/8″ – 6″ OD; wall thicknesses vary Std foot lengths; CTS Clear
Film 0.003″ – 0.030″ TH Clear
Other Tube-Pak polyethylene caps available to fit most OD sizes

Give us your cut-to-size dimensions. We will precision-cut these plastics to your exact size. Additional sizes and colors available upon request.


Physical PropertiesUnitsASTMResults
Density lb/in3 D792 0.0419 – 0.0473
Water Absorption, 24 hrs % D570 1.20 – 2.1
Mechanical PropertiesUnitsASTMResults
Tensile Strength @yield psi D638 2,490 – 6,300
Tensile Elongation @Break % D638 35.0 – 55.0
Flexural Strength psi D790 3,100 – 9,430
Flexural Modulus psi 400000 120,000 – 350,000
Hardness, Rockwell R D785 26.0 – 112
IZOD Impact Strength Notched ft-lb/in D256 1.59 – 2.30 @-40° C
IZOD Impact Strength Un-notched ft-lb/in D256 0.693 – 2.30
Thermal PropertiesUnitsASTMResults
Coefficient of Linear Thermal Expansion µin/in-°F D256 6.11 – 94.4
Heat Deflection Temp at 66 psi °F D648 154 – 201
Heat Deflection Temp at 264 psi °F 126 – 183
Melting Temperature °F D3418 176 – 239
Electrical PropertiesUnitsASTMResults
Dielectric Constant D150 3.30 – 3.80
Dissipation Factor @ 60 Hz D150 0.0100 – 0.150
Optical PropertiesUnitsASTMResults
Refractive Index % D542 1.46 – 1.49
Haze, initial % D1003 8.5
Transmission, Visible % 90

NOTE: The property values presented above are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers’ complete material property datasheets. All values at 73℉ (23℃) unless otherwise noted.


  • Pneumatic system traps
  • Sign panels
  • Packaging, tubing
  • Machine guards
  • Glazing


  • FDA compliant
  • Low water absorption
  • Ease of fabrication
  • UV resistant
  • Good clarity
  • Impact resistant
  • Manufactured from a renewable resource (wood pulp)
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