Description

Zinc Borate CAS NO 1332-07-6 is an inorganic, halogen-free flame retardant and smoke suppressant compound. It is valued for its synergistic effects with other flame retardants, enhancing performance while maintaining thermal stability. This product is essential for manufacturers in the plastics, rubber, coatings, and textiles industries seeking to improve the fire safety of their materials.

Application

• As a synergistic flame retardant and smoke suppressant in PVC, polyolefins, engineering plastics, and elastomers.
• In halogen-free, low-smoke cable compounds and wire insulation materials.
• As a component in intumescent fire-retardant coatings and paints for steel structures and wood.
• In rubber products such as conveyor belts and seals to enhance fire resistance.
• As an additive in textiles and fabrics for protective clothing and furnishings.
• In adhesives and sealants to meet specific fire safety regulations.

Basic Information

Product Name	Zinc Borate
CAS No.	1332-07-6
Molecular Formula	Typically 2ZnO·3B₂O₃·3.5H₂O (various hydrated forms exist)
Molecular Weight	434.66 g/mol (for 2ZnO·3B₂O₃·3.5H₂O)
Synonyms	Zinc Borate Hydrate; Firebrake ZB; Boron Zinc Oxide; ZB 2335; ZB 467; FBZB; Zinc Borate 2335; 2ZnO·3B₂O₃
EINECS	215-566-6

Quality Control

Our Zinc Borate is manufactured under strict quality management systems. Each batch undergoes rigorous testing for key parameters including zinc oxide content, boron oxide content, and loss on ignition to ensure consistent performance as a flame retardant. Certificates of Analysis (COA) are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); keep containers tightly sealed to prevent absorption of atmospheric moisture, which can affect flow properties and performance.

Specification

Item	Specification
Appearance	White fine powder
Zinc Oxide (ZnO) Content	37 - 40 %
Boron Oxide (B₂O₃) Content	45 - 48 %
Loss on Ignition (LOI)	13 - 15 %
Particle Size (D50)	2 - 10 µm
Specific Gravity	2.6 - 2.8
Dehydration Temperature	> 290 °C

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