Zinc Borate
Zinc borate is a multifunctional flame retardant, smoke suppressant and anticorrosive additive for polymers, rubber, coatings and engineered materials.
Also known as: Hydrated zinc borate, Flame-retardant zinc borate
Crown Step supplies Zinc Borate from qualified manufacturers in China for wholesale and export orders. Batch-specific COA, SDS and available regulatory documentation can be provided with the quotation.
Product Information
- International name: Zinc Borate
- Chemical formula: 2ZnO·3B2O3·3.5H2O
- CAS number: 1332-07-6
- Appearance: Fine white crystalline powder, odorless
- Packaging: 25 kg polypropylene bags with polyethylene liner
- Storage: Store in a cool, dry and well-ventilated area; typical shelf life 36 months
Typical Applications
- PVC, polyolefins and engineering polymers
- Rubber and cable compounds
- Epoxy, phenolic and thermoset resins
- Fire-retardant coatings and primers
- Glass, ceramics and textile treatments
Typical Specification
| Parameter | Typical value |
| Whiteness | 95-99 |
| Particle size | 2-5 µm |
| Surface moisture | Max. 1.0% |
| ZnO | 37.0-40.0% |
| B2O3 | 45.0-48.0% |
| Loss on ignition | 13.5-15.5% |
| Lead | Max. 10 ppm |
| Cadmium | Max. 5 ppm |
The values above are typical commercial specifications and must be confirmed against the current manufacturer’s COA before purchase.
For price, minimum order quantity, lead time and shipping terms for Zinc Borate, send us your inquiry through the form below.