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
Chemical formula: 2ZnO 3B2O3 3.5H2O
Product and usage characteristics
Burning weight loss（%）
1% decomposition temperature（℃，N2）
The average particle size D50（um）
PVC, PE, EVA, PP, reinforced polyamide, polystyrene, epoxy resin, natural rubber, styrene butadiene rubber, neoprene
Paper, fabrics, decorative panels, floor leather, wallpapers, carpets, ceramic glazes, fungicides, coatings
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%.