Character & Purpose: It is a white crystal. Its aqueous solution will etch
glass. It is used in welding flux, toothpaste additive, preservative .
Packing: 25 Kg net, PP woven bags with double PE inners.
Formula: NaF
Standard:
|
Item |
Spec. |
Typical Results |
|
NaF/% |
98.0 Min. |
98.8 |
|
Water-insoluble matter/% |
0.5 Max. |
0.2 |
|
Free acid(HF)/% |
0.1 Max. |
0.03 |
|
Free base(Na2CO3)/% |
0.2 Max. |
0.1 |
|
Sulfate(SO4)/% |
0.2 Max. |
0.1 |
|
Silicate(SiO2)/% |
0.5 Max. |
0.23 |
|
H2O/% |
0.5 Max. |
0.21 |
|
Heavy metal (Pb)/% |
0.005 Max. |
0.002 |
|
Fe/% |
0.005 Max. |
0.0008 |
|
As/% |
0.0005 Max. |
0.0001 | |
