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Chemical name: | Zinc Borate |
CAS No. : | 12767-90-7 |
Formula: | 2ZnO 3B2O3 3.5H2O |
Formula weight | 434.62 |
CHARACTERISTICS:
Zinc Borate is an environmental friendly inorganic flame retardant.It is white powder , slightly soluble in water, crystal powder insoluble in HCl, amorphous powder soluble in HCl. This product performance in high flame retardancy without any toxic substance, low water solubility, high thermal stability, ultra-fine particle size, excellent dispersibility. Also it takes role as smoke suppressant and synergist with other flame retardant together.
SPECIFICATION
Item | Unit | Value |
Appearance | -- | White Powder |
ZnO | % | 37.0-40.0 |
B2O3 | % | 45.0-48.0 |
Loss at ignition | % | 13.0-15.5 |
Whiteness | -- | ≥90 |
Moisture | % | ≤0.5 |
Particle Size | D10 (um) | 0.5-1.0 |
D50 (um) | 3-5 | |
D90 (um) | 6-8 | |
Sieve analysis | % | ≤0.1 |
Melt point | ℃ | 980 |
Decomposition temp | ℃ | ≥290 |
Density | g/cm3 | 2.67 |
Refractive index | 1.58 |
APPLICATION:
Used in PVC,PE,EVA,PP, Reinforced PA,PS,Epoxy, Nature Rubber as synergist with halogen flame retardants and ATO.Used as flame retardant in paper, fabric textile, decorating board, carpet etc.
The dosage varies from 2% to 15% as flame retardant or synergist.
PACKING & STORAGE:
25Kg/Bag. PP woven bag with PE film inner lining or paper-plastic bag.
Store in ventilated, dry place, avoid direct sunlight.

Our company has a number of professional production and technical personnel and a number of creative design talents. After years of efforts of all colleagues, the company's scale and strength are growing and Zinc Borate for Coating & Adhesives are mainly sold overseas. With the development goal of 'becoming bigger and stronger, standing in the same industry with pride', we have made continuous progress and offered high grade products and service to many customers. We promise to try our best to deliver you with high quality and efficient services.