Description

Zinc Borate is an important inorganic flame retardant and smoke suppressant compound, widely recognized for its synergistic effects with other additives. Its primary value lies in its ability to provide excellent fire resistance while maintaining thermal stability and low toxicity, making it a safer alternative to halogenated systems. This product is essential for manufacturers in the plastics, rubber, coatings, and textiles industries seeking to enhance the fire safety of their polymeric materials.

Application

• As a synergistic flame retardant and smoke suppressant in PVC, polyolefins, engineering plastics, and elastomers.
• In halogen-free flame-retardant cable compounds and wire insulation coatings.
• For improving the fire resistance of paints, coatings, and textile back-coatings.
• As a component in intumescent fireproofing systems for construction materials.
• In adhesives and sealants to meet specific fire safety regulations.
• As a corrosion inhibitor in certain primer and anti-corrosive coatings.

Basic Information

Product Name	Zinc Borate
CAS No.	12536-65-1
Molecular Formula	Typically 2ZnO·3B2O3·3.5H2O or similar hydrated forms
Molecular Weight	434.66 g/mol (for 2ZnO·3B2O3·3.5H2O)
Synonyms	Zinc borate hydrate; Firebrake ZB; Boron zinc oxide; FBZB; Zinc borate 2335; 2ZnO·3B2O3·3.5H2O; Zinc borate (Zn2B6O11·3.5H2O)
EINECS	235-736-7

Quality Control

Our Zinc Borate is manufactured under a stringent quality management system. Each batch undergoes rigorous testing for key parameters such as zinc oxide content, boron oxide content, loss on ignition, and particle size distribution to ensure consistent performance as a flame retardant. Certificates of Analysis (COA) documenting compliance with our specifications are available for every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials. This product is hygroscopic (moisture-sensitive); keep container tightly sealed when not in use to prevent caking or reduction in efficacy.

Specification

Item	Specification
Appearance	White fine powder
Zinc Oxide (ZnO) Content	37.0 - 40.0 %
Boron Oxide (B2O3) Content	45.0 - 48.0 %
Loss on Ignition (LOI)	13.0 - 15.5 %
Particle Size (D50)	< 10 µm
Specific Gravity	2.8
Dehydration Temperature	> 290 °C

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.