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Ensinger PEI
Americas Styrenics STYRON™ 668 General Purpose Polystyrene Resin
Categories: Polymer; Thermoplastic; Polystyrene (PS); Polystyrene, Molded, Unreinforced

Material Notes: STYRON™ 668 is a general purpose polystyrene with medium flow and a balance of heat resistance and stiffness characteristics that make it suitable for applications such as CD jewel boxes. STYRON™ 668 complies with U.S. FDA 21 CFR 177.1640.

Information provided by Dow

Americas Styrenics was formed in 2008 as a joint venture between Dow Chemical and Chevron Phillips Chemical Company. Styron was a Dow trade name before the JV formation.

Available Properties
  • Specific Gravity, ASTM D792
  • Linear Mold Shrinkage, ASTM D955
  • Melt Flow, ASTM D1238
  • Tensile Strength, Ultimate, ASTM D638, 0.5 x 0.125 in. specimen; 0.2 in/min
  • Tensile Strength, Yield, ASTM D638, 0.5 x 0.125 in. specimen; 0.2 in/min
  • Elongation at Break, ASTM D638, 0.5 x 0.125 in. specimen; 0.2 in/min
  • Tensile Modulus, ASTM D638, 0.5 x 0.125 in. specimen; 0.2 in/min
  • Flexural Strength, ASTM D790, 0.05 in/min; 3-point
  • Flexural Modulus, ASTM D790, 0.05 in/min; 3-point
  • Izod Impact, Notched, ASTM D256, 0.5 x 0.125 in.
  • CTE, linear, ASTM D696
  • Deflection Temperature at 0.46 MPa (66 psi), ASTM D648, unannealed; injection molded
  • Deflection Temperature at 1.8 MPa (264 psi), ASTM D648, unannealed; injection molded
  • Vicat Softening Point, ASTM D1525-B, 120°C/hr, 1 kg
  • Flammability, UL94
  • Refractive Index, ASTM D542
  • Haze, ASTM D1003
  • Transmission, Visible, ASTM D1003
  • FDA, See notes for details.
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Manufacturer Notes:
Americas Styrenics LLC

Category Notes

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