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Zinc borate
Product Name:Zinc borate
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Zinc borate

ZINC BORATE 2335 (2ZnO·3B2O3·3.5H2O)

(CAS No. 1332-07-6)

Product Features:

It is white and nonpoisonous powder. It can be dissolved easily in hydrochloric acid, sulfuric acid, dimethyl sulfoxide etc. but not in water, ethyl alcohol, benzene, acetone etc. It has good dispersibility and stability property. It can be used as flame retardant, meanwhile it can abate smoke. When it is used with Antimony Trioxide, Chlorinated Paraffin -70 together, the effectiveness of flame retardant will be better than ever.

Quality Index:



Whiteness (%)

≥ 96

B2O3 (%)

47.0 - 49.0

ZnO (%)

37.0 - 40.0

Surface water (%)

≤ 0.5

Crystal water (%)

13.0 - 15.5

Particle size (μm)

3 - 5

Fineness (Residue on 45μm sieve) (%)

≤ 0.1

Specific gravity (g/cm3)


Melting point ()


Temperature of dehydration ()

> 320

Pb, ppm

≤ 10

Cd, ppm

≤ 5

Fe, ppm

≤ 20


Zinc Borate 2335 has average particle distribution and fine dispersion performance. It is suitable to be used in coating, plastic, rubber and adhesives, and wire, cable as multi-functional synergistic additives with antimony oxide or other halogenated flame retardants to significantly improve the flame retardant performance, remove smoke emission and adjust the balance on chemical, mechanical, electrical etc properties.

Packing and Storage:

25kg/bag, paper-polymer outer & PE inner bag.

Store in dry, normal temperature, moisture prevention

Order:Zinc borate





Qingdao Collect Chemical Co.,Ltd
Qingdao Collect Flame Retardant Tech Co.,Ltd
Mobile: 0086-18554855655
Tel/Fax: 0086-532-86998155
Add: No.127 Lushan Road,Huangdao District,Qingdao City,Shandong, China

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Qingdao Collect Chemical Co.,Ltd
Qingdao Collect Flame Retardant Tech Co.,Ltd
Mobile: 0086-18554855655
Add:No.127 Lushan Road, Huangdao District, Qingdao City, Shandong, China
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