XS-ZB Zinc Borate Series

Zinc borate is an environmentally friendly inorganic flame retardant. The most commonly used variety is 3.5 water zinc borate, molecular weight: 434.62, white triclinic crystal or amorphous powder, slightly soluble in water, crystal insoluble in hydrochloric acid, amorphous powder soluble in hydrochloric acid.

Zinc borate produced by our company has the characteristics of non-toxicity, low water solubility, high thermal stability, ultra-fine particle size, and excellent dispersibility.


  • EINECS NO: 235-804-2

  • CAS NO:12767-90-7

  • Chemical formula: 2ZnO 3B2O3 3.5H2O

Additional Information

Product and usage characteristics

XS-ZB-2335

XS-ZB-2335A

Exterior

White powder

White powder

ZnO content(%)

37~40

37~40

B2Ocontent(%)

45~48

45~48

Moisture(%)

≤0.5

≤0.5

Burning weight loss(%)

13.5~15.5

13.5~15.5

Conductivity(us/cm)

≤2000

≤300

1% decomposition temperature(℃,N2

300

300

The average particle size D50(um)

3~5

3~5

Recommended use

PVC, PE, EVA, PP, reinforced polyamide, polystyrene, epoxy resin, natural rubber, styrene butadiene rubber, neoprene

Can use

Paper, fabrics, decorative panels, floor leather, wallpapers, carpets, ceramic glazes, fungicides, coatings

Recommended dosage

Used as a flame retardant or a flame retardant synergist, the recommended dosage is about 2 to 15% of the material quality. The dosage for other purposes ranges from 2 to 30%.