Flame Retardant Zinc Borate 2335

Technical Name: Flame Retardant Zinc borate 2335( 2ZnO.3B2O3 .3.5H2O)

CAS NO.: 1332-07-6

Technical Specification: Q/ZWW003-2009

TITLE OF INDEX

ZB400 Grade

Whiteness

98

Surface water % ≤

0.5

Particle size, um

3-5

ZnO, %

37.0-40.0

B2O3 , %

47.0-49.0

H2O(hydrate),%

13.0-15.5

Fineness (Residue on 45um sieve ), %  ≤

0.1

Specific gravity, g/cm3

2.67

Melting point ℃

980

Temp. of dehydration ℃ >

320

Refractive index

1.58

Introduction: Zinc Borate is one environmental-friendly halogen-free flame retardant. There are some formulations of xZnO.yB2O3.zH2O, in which Zinc Borate with 3.5 hydrate is called ZB-2335 (2ZnO.3B2O33.5H2O)is the most common used grade. It has owned some excellent properties on non-toxicity, slight solubility in water, good thermal stability, fine particle size, low specific gravity, great free flowing etc.

Application: 

1. Zinc borate can be used 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. 

2. As environmental protection substitute to replace current Antimony Oxide or halogen flame retardants, Zinc borate is directly used in PVC, PE, Polyolefin, Epoxy Polyamide etc resins and rubber process. Moreover, it is widely used in textile, fiber, floor, leather, wall paper, carpet, paint etc decorative materials to improve flame retardant performance.  

3. Base on its anti-static properties, zinc borate is widely used in mining plastic material, and used on anti-corrosion, infra-red absorption, fungicide for wood preservation etc fields.

Package: Zinc borate should be packed, transported, and stored as normal chemical goods. Standard package is 25kg/bag, and we can design package according to order.

Company Info

Henan Wising Chem Co., Ltd