Sodium Fluoride (AlF3)/Dentalfluoro
FORMULA: NaF Molecular weight: 41.99 HAZARD CLASS:6.1
H.S Code: 2826.3000 CAS No.: 7681-49-4
Properties:
Colorless cubic or four party crystallization. To moisture sensitive. The water solubility (g / 100 ml) : 15 ℃ 4, 25 ℃ when when 4.3, 100 ℃ when 5, not soluble in alcohol. Partly hydrolysis alkaline reaction in aqueous solution. New configuration of saturated solution pH 7.4. Its water solution can make glass be afraid, but its the crystallization of dry powder can be stored in the glass or. The relative density of 2.78. Melting point 993 ℃. Boiling point 1704 ℃. Medium poison, half of the lethal dose (rats, classics mouth) 0.18 g/kg. Have strong excitant.
Usage:
Used in welding flux, toothpaste additive, water treatment chemicals,preservative, bactericide, slagging medium of metallurgy, adhesive, papermaking and constrution industry.
Specification:
|
Composition%
|
Grade Ⅰ
|
Grade Ⅱ
|
Grade Ⅲ
|
|
NaF ≥
|
98
|
95
|
84
|
|
SiO2 ≤
|
0.5
|
1.0
|
----
|
|
Na2CO3 ≤
|
0.5
|
1.0
|
2.0
|
|
Sulfate(SO42-) ≤
|
0.3
|
0.5
|
2.0
|
|
Acidity(HF)≤
|
0.1
|
0.1
|
0.1
|
|
Water insoluble ≤
|
0.7
|
3
|
10
|
|
H2O ≤
|
0.5
|
1.0
|
1.5
|
Packing: 25kg p.p woven bag within plastic film.
Storage: in cool and ventilated place.
Storage: in cool and ventilated place.