Technical datasheet
Firebrake® ZB-Fine
Supplied byU.S. Borax (Rio Tinto)- Last Updated on Nov 18, 2025
Firebrake® ZB-Fine by U.S. Borax (Rio Tinto) is zinc borate-based flame retardant, smoke and afterglow suppressant and anti-arcing agent for plastics applications.
- It is suitable for polyvinyl chloride, nylon, epoxy, polyethylene, polypropylene, polyesters, thermoplastic elastomers and rubbers.
- It can be fed to extruders, calanders and injection molding equipment.
- Firebrake® ZB-Fine by U.S. Borax (Rio Tinto) can be used in systems requiring high processing temperatures because releases its water of hydration at temperatures exceeding 290°C.
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Firebrake® ZB-Fine properties
Other properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Anhydrous Equivalent | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Boric Oxide Content | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Density, Bulk | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Melting Point | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Particle Size | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Refractive Index | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Specific Gravity | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Water Content | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Zinc Oxide Content | 0.0 Visible After Login | Visible After Login | Visible After Login |
| pH | 0.0 Visible After Login | Visible After Login | Visible After Login |