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Home/Products/zinc boarate/

zinc boarate

Update time：2022-02-15 09:09:40
Price:Negotiable
Min Order:10 Metric Ton / Metric Tons
  • 7 days
  • T/T L/C D/P D/A
  • 1000 Metric Ton / Metric Tons per Month

Basic Info

Brand NamehtchemPlace of OriginChina

Product Description


Product Description





Zinc borate

1.Inorganic addition flame retardan

2.Good hot stability

3.Used in rubber, plastic, cable, wood




Flame retardant-Zinc Borate


1.Basic Index



















Molecular formula




2ZnO·3B2O3·3.5H2O




Molecular weight




435.4




Appearance




white powder




Melting point




980°C




2.Specification






























































Item/Grade




Zinc borate ( 2ZnO.3B2O3 3.5H2O)




Excellent grade




First grade




Whiteness




99




95




Surface water % ≤




0.5




1.0




Particle size, um




3-5




3-5




ZnO, %




37.0-40.0




B2O3 , %




45.0-48.0




Loss on ignition,%




13.5-15.5




Fineness (Residue on 45um sieve ), %  ≤




0.1




Specific gravity, g/cm3




2.67




Melting pointoC;




980




Temp. of dehydration oC>




320




Refractive index




1.58




 3.Application Field

     Flame Retardant ZB is inorganic addition flame retardant. Its characteristics are that it has good hot stability, and not only stops buring and vanishes smokings but also be used with other inorganic flame retardant. It is used in epoxy resin, unsaturated polyester, polyurethane, etc. And it is widely used in rubber, plastic, cable, wood,etc.

4.Packing and store 



Packing: brown paper double deck tectorial bag, and net weight per bag is 25kg.

store: storing in dry, ventilated and moistureproof conditions




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