Tel: +86 21 58399598
Fax: +86 21 58898943
Email: wudx@huawan.com.cn
Mr.Wu
Address: Room 802 1ST BLDG, No. 28 North Zhangjiabang
Road, Shanghai
P.C:200122 |
|
Sodium
fluorosilicate
Molecular
Formula and Weight: Na2SiF6=188.06
Physical and chemical properties:
The Sodium Fluorosilicate is white crystallize or crystallize
powder,specific weight is 2.68, tiny dissolve in the water,
do notdissolve in the alcohol, have the causticity, poisonous,
at above 450℃ burn empress, resolve the Sodium fluoride
and Silicon tetrafluoride.
Uses: use for insecticide, lead alloy welding
flux, leather, enamel flux, pottery glaze, opal glass and
medical industries, etc.
Quality Standards:
|
Index
|
Excellent
|
First
|
Qualitied
|
|
Sodlum Fluorosilicate
content,%≥
|
99.0
|
98.5
|
97.0
|
|
Free Acid (as HCL)
content,%≤
|
0.10
|
0.15
|
0.20
|
|
105℃ Weight less on
dry,%≤
|
0.30
|
0.40
|
0.60
|
|
Fe content,%≤
|
0.02
|
-
|
-
|
|
Finess (250¦Ģm mesh scroon),%≥
|
90
|
90
|
90
|
|
