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Ammonium
Fluosilicate
[Molecular Formula]
(NH4)2SiF6
[Molecular Weight] 178.14
[Properties]
Colorless crystal powder, soluble in alcohol and
water. Its type of crystal include: -type
and -type;
-type
is equiaxial crystal, while -type
is trimorphism, stable in air. -type
can transform into -type
if heated for a long time. Density(-type):
2.011g/cm2; density(-type):
2.152g/cm2; solubility in water: 18.5(25).
[Uses]
It is used as mothproofing agent, disinfectant
in brewing industry, etching agent for glass,
anti-moth agent for textiles. It is also used
in metal casting, electroplating, extracting potassium
from greensand, producing cryolite and ammonium
chlorate, etc.
[Quality Index] Enterprise
Standard(ES)
Item |
Index |
(NH 4) 2SiF 6,
% |
98 |
Sulfate(SO 4),
% |
0.3 |
H 2SiF 6,
% |
0.6 |
Moisture,
%
|
0.6 |
Water-insoluble
Matter, % |
0.5 |
Appearance |
white crystal |
[Package] Plastic
woven bag lined with polyethylene plastic bag,
net weight: 50kg/bag.
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