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.