Sodium Hexafluorosilicate

Sodium Hexafluorosilicate
CAS:16893-85-9
Molecular formula: Na2SiF6, Molecular weight: 188.06
UN:2674
EINECS:240-934-8
HS Code: 2826901010

Properties: Sodium Hexafluorosilicate is white crystal or crystallized powder; specific weight is 2.68; slightly soluble in water, insoluble in alcohol, corrosive and toxic; when ignited to over 450,it would decompose into sodium fluoride and silicon tetrafluoride.

Usage:
As a cosolvent enamel, glass milky agent. Solidification agent for acid-resistant cement mortar and acid-resistant concrete. Wood preservatives coagulator. Used in pharmaceutical and water treatment. Making synthetic cryolite and sodium fluoride.
Packing: 25kg/bag


Specification:

Items

Index

 

Excellent Grade

First Grade

Qualified Grade

Sodium Silicofluoride % ≥

99.0

98.50

97.0

Iron (Fe) % ≤

0.02

/

/

Loss of Weight on Drying at 105°C % ≤

0.30

0.40

0.60

Insoluble in Water % ≤

0.40

0.50

1.0

Free Acid (as HCL) % ≤

0.10

0.15

0.20

Heavy Metal (as Pb) % ≤

0.02

0.05

0.05

Fineness Passed 250mesh Sieve % ≤

90

90

90

 

 


 

 

Details are introduced