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. |
99.9% Min. |
|
*Lead
30 ppm Max. |
30 ppm Max. |
|
*Cadmium
10 ppm Max. |
10 ppm Max. |
|
*Copper
10 ppm Max. |
10 ppm Max. |
|
*Iron
10 ppm Max. |
10 ppm Max. |
|
*Loss at 110°C
0.07% Max. |
0.07% Max. |
|
*Loss at 825°C
0.20% Max. |
0.20% Max. |
|
*Retained 325 mesh sieve
0.02 Max. |
0.02 Max. |
|
Specific Gravity, typical
5.6 |
5.6 |
|
Surface Area
4.0 – 5.0 m2/g |
4.0 – 5.0 m2/g |
|
Average Particle Size
0.46 – 0.58 microns |
0.46 – 0.58 microns |
|
Bulk Density
35.0 – 45.0 lb/ft3 |
35.0 – 45.0 lb/ft3 |
*Actual tech data / technical data values reported on Certificate of Analysis
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For CR-4 - ZINC OXIDE
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