1) Molecular formula: NaF
2) Molecular weight: 41.99
3) Property: Sodium fluoride is white shiny crystal or white powder, density is 2.56, melting point is 993οC, boiling point is 1695οC, slightly soluble in alcohol, soluble in water, corrosive to glass, soluble in hydrofluoric acid and generate sodium hydrogenfluoride.
4) Usage: Used in wood preservative, agricultural insecticide, medicine preservative, fluorination treatment for drinking water, production of sodium fluoride toothpaste, it can also be used in the enamel and pharmaceutical industry, etc.
5) Quality standard: Execute national YS/T517-2006 standard
|
Grade
|
Chemical composition (Mass fraction)/%
|
|
NaF
|
SiO2
|
Na2CO3
|
Sulfate SO2- 4
|
Acidity (HF)
|
Water insoluble matter
|
H2O
|
|
≥
|
≤
|
|
Grade I
|
98
|
0.5
|
0.5
|
0.3
|
0.1
|
0.7
|
0.5
|
|
Grade II
|
95
|
1.0
|
1.0
|
0.5
|
0.1
|
3
|
1.0
|
|
Grade III
|
84
|
---
|
2.0
|
2.0
|
0.1
|
10
|
1.5
|
Remark: '---' in (1) represents not specified.
(2) Chemical composition is calculated by dry base.
