Technical datasheet

Firebrake® ZB-XF

Supplied byU.S. Borax (Rio Tinto)- Last Updated on Nov 18, 2025

Firebrake® ZB-XF by U.S. Borax (Rio Tinto) is zinc borate-based flame retardant, smoke and afterglow suppressant and anti-arcing agent.
  • It is compatible with polyvinyl chloride, nylon, epoxy, polyethylene, polypropylene, polyesters, thermoplastic elastomers and rubbers.
  • It can be fed to calanders, extruders and injection molding equipment.
  • Firebrake® ZB-XF 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-XF properties

Other properties

PropertiesValue & unitTest conditionTest method
Anhydrous Equivalent0.0 Visible After LoginVisible After LoginVisible After Login
Boric Oxide Content0.0 Visible After LoginVisible After LoginVisible After Login
Density, Bulk0.0 Visible After LoginVisible After LoginVisible After Login
Melting Point0.0 Visible After LoginVisible After LoginVisible After Login
Particle Size0.0 Visible After LoginVisible After LoginVisible After Login
Refractive Index0.0 Visible After LoginVisible After LoginVisible After Login
Specific Gravity0.0 Visible After LoginVisible After LoginVisible After Login
Water Content0.0 Visible After LoginVisible After LoginVisible After Login
Zinc Oxide Content0.0 Visible After LoginVisible After LoginVisible After Login
pH0.0 Visible After LoginVisible After LoginVisible After Login

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