Fire Retardant Zinc Borate Powder

• Customization: Available
• CAS No.: 1332-07-6
• Formula: 2ZnO.3b2o3.3.5H2O
• Model NO.: ZB-2335
• EINECS: 215-566-6
• Appearance: Powder
• Grade Standard: Industrial Grade
• Transport Package: Plastic Woven Bag
• Specification: 25kg/bag
• Trademark: CHENXU
• Origin: China
• HS Code: 284020
• Production Capacity: 1000mt/Month

Product Description

Zinc Borate
Molecular Formula 2ZnO·3B2O3·3.5H2O
Brand No.: ZB-2335
 
zinc borate is a low toxicity, white crystalline, inorganic compound primarily used as a flame retardant and smoke suppressant in plastics and cellulose fibers, paper, rubbers and textiles. It is also used in paints, adhesives and pigments.
 
2. Technical Specification
 

Technical requirements		Test results
ZnO %	37.5+/-0.5	37.58
B2O3%	47.5+/-1	47.46
Appearance  water%	≤0.5	0.28
Sieve Residue	≤ 0.0005	0.0003
Crystal water %	14+/- 0.5	13.5
Pb ppm	≤ 10	6.3
As ppm	≤ 2	ND
Cd ppm	≤ 5	1.8
Cr ppm	≤ 5	1
P article size	1-5 um	2.35
Whiteness%	≥ 97	98.5

 
3. Applications
 
zinc borate is primarily used as a flame retardant in plastics and cellulose fibers, paper, rubbers and textiles. It is also used in paints, adhesives, and pigments. As a flame retardant, it can replace antimony trioxide as a synergist in both halogen-based and halogen-free systems. It is an anti-dripping and char-promoting agent, and suppresses the afterglow. In electrical insulator plastics it suppresses arcing and tracking.
 
4. Packaging / Transportation
 
Internal plastic with knitted exterior covered with film, with the net weight of 20kg, 25kg or 40kg.
Protected from damp, rainfall and package damage in transportation.