| Other: |
Structural formula: SnF2
Molecular weight: 156.71
physicochemical properties: white monoclinic crystal. The temperature of 215℃. The boiling point of 850℃. Soluble in cold water and hydrofluoric acid. It is easily hydrolyzed and oxidized in water.
Uses: Used in toothpaste production to protect teeth from calcium dissolution. Used in the daily chemical industry to reduce drug allergy. A Soft soldering flux used to braze aluminum alloys.
Product packaging: 25kg composite kraft paper bag, carton or cardboard drum or according to customer needs.
| Item |
Index |
| Electronic grade |
Pharmaceutical Grade |
| Content %≥ |
99.9 |
99 |
| Tin (Sn) %≥ |
75% |
75 |
| Fluorine (F) % |
23.5-24.8 |
22.3-25.5 |
| Antimony (Sb) ppm≤ |
30 |
0.005 |
| Lead (Pb) ppm≤ |
10ppm |
0.001 |
| Arsenic (As)ppm≤ |
1ppm |
0.0003 |
| Mercury (Hg) ppm≤ |
1ppm |
0.0002 |
| Iron (Fe) ppm≤ |
5ppm |
0.001 |
| Silicon (Si) ppm≤ |
50ppm |
-- |
| PH (0.4% aqueous solution) |
2.8-3.5 |
2.8-3.5 |
| Loss on drying (105°C/4H) %≤ |
0.2 |
0.2 |
| PH (0.4% aqueous solution) |
2.8-3.5 |
2.8-3.5 |
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