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  • Zinc borate CAS#1332-07-6
  • Zinc borate CAS#1332-07-6
  • Zinc borate CAS#1332-07-6
  • Zinc borate CAS#1332-07-6
  • Zinc borate CAS#1332-07-6

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Zinc borate CAS#1332-07-6

Zinc borate CAS#1332-07-6

Basic Information

High-Performance Flame Retardancy: Provides effective flame retardant action in both solid and gas phases, enhancing fire safety across various polymer systems.


Excellent Smoke Suppression: Promotes the formation of a protective glassy and char layer, significantly reducing toxic and irritating smoke during combustion.


Strong Synergistic Effects: Works efficiently with halogenated flame retardants, antimony trioxide, and alumina trihydrate (ATH), allowing lower additive loadings while maintaining performance.

Enhanced Thermal and Electrical Protection: Releases water of hydration above 290 °C to cool flames, suppress afterglow, and improve resistance to electrical degradation, including high anti-arcing and anti-tracking properties.


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product description

Product Description of ‌Zinc borate CAS#1332-07-6

Zinc borate is a white non-flammable amorphous powder, soluble in dilute acids and slightly in water.

A boron-series flame retardant with good polymer compatibility, it acts in both condensed and gas phases and has excellent smoke suppression. It forms protective glassy and dense carbon layers to reduce toxic smoke, and releases crystal water above 290°C to cool flames.
It synergizes with halogenated flame retardants (especially antimony trioxide, further enhanced by aluminum hydroxide). It also improves electrical degradation resistance (arc/tracking resistance) and serves as an efficient afterglow inhibitor.


Product Application of Zinc borate CAS#1332-07-6

Zinc borate is primarily a flame retardant for plastics, fibers, paper, rubber, textiles, coatings, adhesives and pigments.
It acts as a synergist to partially/fully replace antimony trioxide in both halogenated and halogen-free systems, also serving as anti-dripping, char-promoting and afterglow-inhibiting agent, and reducing arc/tracking in electrical plastics.
In halogenated systems, it is compounded with antimony trioxide and alumina trihydrate, accelerating char formation and facilitating halogen release via zinc halides/oxyhalides. In halogen-free systems, it combines with alumina trihydrate, magnesium hydroxide, etc., forming a porous borate ceramic layer; with silica, it generates borosilicate glass to boost flame retardancy.
EPA-approved as a halogenated flame retardant alternative, it is widely used in PVC, PE, PP, polyamides, epoxy resins, rubbers and other polymers. It also enhances fire resistance of paper, fabrics, panels, flooring, wallpaper, carpets, ceramic glazes, fungicides and coatings.


Product Information

Parameters


Melting point980 °C
density3.64 g/cm3
Cosmetics Ingredients FunctionsSKIN CONDITIONING - HUMECTANT
LogP-0.292 (est)
CAS DataBase Reference1332-07-6(CAS DataBase Reference)
EPA Substance Registry SystemZinc borate (1332-07-6)
Hazardous Substances Data1332-07-6(Hazardous Substances Data)
ToxicityZinc borate 2ZnO3B2O3·3.5H2O has an acute oral toxicity in rats LD50 >10000 mg/kg body weight and acute dermal toxicity in rabbits LD50>10000 mg/kg body weight. It is not a skin irritant and gives a negative response in the Ames mutagenicity test (Kirk-Othmer, 1994).


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