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Quality Chemicals for the Rubber industry
Organic Borates / ZINC BORATE
Characteristics
Zinc Borate is an environmentally friendly halogen-free flame retardant. There are some formulations of XZnO. YB2O3. ZH2O, in which Zinc Borate with 3.5 hydrate is called ZB-2335 (2ZnO. 3B2O33. 5H2O) is the most common used grade. It is practically non-toxic, has slight solubility in water, good thermal stability, fine particle size, low specific gravity and good free-flowing properties. It is a highly efficient flame retardant and is widely used in plastic, rubber, coatings etc.
| Properties: | Limits: |
| Appearance: | White powder |
| Surface water, % max: | 0.50 |
| Particle size, μm: | 3~5 |
| ZnO, %: | 37-40 |
| B2O3, %: | 45-48 |
| H2O (hydrate), %: | 13.5-15.5 |
| Residue on sieve (45 μm), % max: | 0.10 |
| Specific Gravity, g/cm3: | 2.67 |
| Melting Point, °C: | 980 |
| Temp. of dehydration, °C min: | 320 |
| Refractive Index: | 1.58 |