| Sodium
fluorosilicate 
Formulae:
Na2SiF6
Molecular
Weight: 188.06
UN.NO: 2674
HAZARD CLASS : 6.1
H.S.CODE:
2826.2000
Physical chemistry properties: Colorless,odorless,poisonous
and hygroscopichexasquare crystal.Relative density is
2.679,Aetner Dissolvable substances,but undissolved
in alconol.Solubility in acid is larger than in water.Decomposed
as fluoride and silicon oxide in alkali solution.Decomposed
as Sodium fluoride and silicon fluoride over 300°C.
Introduction: It can be used as white-adding
reagent of porcelain enamel and glass,melt-supporting
reagent of acid tolerance cement,solidification matter
of natural latex products,supplement of electrode posit
triayers of zinc-ferric-nickel.Filling substance of
plastic Also used in artificial cryolite,sodium fluoride
production and medical industry and drinking water treatment.
Quality standard:
| Name
of chemicals |
Chemical
composition |
| Appearance |
White
crystal |
| Na2SiF6(based
on dried basis) % ≥ |
99 |
| Dissociation
acid(as HCL) % ≤ |
0.1 |
| Water
undissolvable substance % ≤ |
0.4 |
| Lost
weight of 105°C dried % ≤ |
0.30 |
| Passing
through 250/μm screen % ≤ |
90 |
Package
and transportation: Packed in two layers polyethylene
Knitting bag.Net weight 25kg.Please pay attention to
package bag for protecting the bag damage and dampness
in transportation.
|
