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CR-4 ZINC OXIDE CAS# 1314-13-2

CR-4 Zinc Oxide is used in natural and synthetic rubber compounds as part of the cure system activation. It can also enhance heat aging properties of the vulcanized rubber. It is typically added at a 3.0 – 5.0 phr level early in the mixing process except with polychloroprene compounds.

Packaging: 50 lb. bags

Shelf life: CR-4 is 24 months from the date of manufacture.

SPECIFICATIONS:

Appearance: Fine white powder
*Zinc Oxide

99.9% Min.

*Lead

30 ppm Max.

*Cadmium

10 ppm Max.

*Copper

10 ppm Max.

*Iron

10 ppm Max.

*Loss at 110°C

0.07% Max.

*Loss at 825°C

0.20% Max.

*Retained 325 mesh sieve

0.02 Max.

Specific Gravity, typical

5.6

Surface Area

4.0 – 5.0 m2/g

Average Particle Size

0.46 – 0.58 microns

Bulk Density

35.0 – 45.0 lb/ft3

*Actual tech data / technical data values reported on Certificate of Analysis  

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Technical Data & SDS Sheets

Technical Product Sheets and SDS sheets are available for each of the chemicals listed. To access please click on the links above.
  • Western Reserve Chemical
  • 4837 Darrow Road
  • Stow, OH 44224

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