Sodium Fluosilicate(Na2SiF6)/Sodium Silifluoride
FORMULA: Na2SiF6 Molecular weight: 188.06 HAZARD CLASS: 6.1
H.S Code: 2826.2000 CAS No.: 16893-85-9 UN No.:2647
Properties:
white particles or crystal powder. Odourless. Tasteless. Hot (300 ° C) after the break down into sodium fluoride and four fluoride silicon. In the peculiarity of decomposition. Generate fluoride and silica. A suction wet sex. Soluble in cold water, 40 of 150 of boiling water, not soluble in alcohol. The cold water solution is neutral in hot water become acidic decomposition. The relative density of 2.679. Medium poison, half of the lethal dose (rats, classics mouth) 125 mg/kg. Stimulating.
Usage:
Wood antiseptics; hygroscopic agent of acid-proof cement, brightening agent of glass and porcelain enamel; used to produce insecticide; curing agent of natural latex, additive in the plating layer of nickel, zinc and iron; plastic filler. Moreover used in fluorination of drug and drinkable water, used in artificial cryolite and Sodium fluoride
Specification:
|
Item |
Excellent grade |
Grade I |
Grade II |
|
Sodium fluorosilicate(Na2SiF6) |
% ≥ 99.0 |
% ≥ 98.5 |
% ≥ 97.0 |
|
Iron(Fe) |
% ≤0.02 |
-- |
|
|
Free acid(based on HCI) |
% ≤ 0.10 |
% ≤ 0.15 |
% ≤ 0.20 |
|
Chlorid(based on Cl) |
% ≤0.15 |
% ≤0.20 |
% ≤0.30 |
|
Water-insoluble matter |
% ≤ 0.40 |
% ≤ 0.50 |
-- |
|
Loss on Drying at 105℃ |
% ≤0.30 |
% ≤0.40 |
% ≤0.60 |
|
Fineness(through 250μm test bolter) |
% ≥90 |
% ≥90 |
% ≥90 |
|
Sulphate (as SO4ˉ) |
% ≤ 0.25 |
-- |
-- |
|
Phosphorus pentoxide(P2O5) |
negotiation |
negotiation |
-- |
Packing: 25kg p.p woven bag within plastic film.
Storage: in cool and ventilated place.
