Stannous Fluoride
Molecular formula: SnF2 Molecular weight : 156.71
Uses: Used in toothpaste production, in order to protect the teeth to prevent calcium be dissolve out. Daily chemical industry, reduce drug allergy. Used in brazing aluminium alloy as soft soldering flux.
Property: Property: white Monoclinic crystal . Melting point 215℃. Boiling point 850℃.
CAS#: 7783-47-3 Customs No.: -- MSDS: -- Risk No.: --
Product specification |
Electronic grade |
Toothpaste grade |
Pharmaceutical grade |
Standard |
SEMI C1 |
Yotech Standard |
USP-34 |
Assay |
≥99.9％ |
≥99.0％ |
≥94.0％ |
Sn ％ |
≥75％ |
≥75％ |
≥71.2％ |
F ％ |
23.5-24.8％ |
22.3-25.5％ |
22.3-25.5％ |
Sb |
≤30 ppm |
≤0.005％ |
≤0.005％ |
Pb ppm |
≤10 ppm |
≤0.001％ |
≤0.003％ |
Arsenic (As) ppm |
≤1 ppm |
≤0.0003％ |
≤0.0003％ |
Hg ppm |
≤1 ppm |
≤0.0002％ |
≤0.0002％ |
Fe ppm |
≤5 ppm |
≤0.001％ |
≤0.0018％ |
Si ppm |
≤50 ppm |
-- |
-- |
PH (0.4% Aq. solution) |
2.8-3.5 |
2.8-3.5 |
2.8-3.5 |
Intermediate inspection |
Appearance Identification |
white crystal |
white crystal |
white crystal |
Loss on dry (105℃/4H) ％ |
≤0.2 |
≤0.2 |
≤0.5 |
Whiteness (70-90umGranularity) ％ |
≥98 |
≥98 |
≥95 |
Granularity (U.S.SCREEN) mesh |
90% pass 80-100 mesh |
90% pass 80-100 mesh |
90% pass 80-100 mesh |
Transmission (3％ Aq. solution) ％ |
≥95 |
≥95 |
≥90 |
Shelf life year |
Two years |
Two years |
Two years |
Supply reference |
Production process |
synthesis method |
synthesis method |
synthesis method |
Packing |
25kg Plastic-paper bag four layers/20T/(20')FCL |
25kg Plastic-paper bag four layers/20T/(20')FCL |
25kg Plastic-paper bag four layers/20T/(20')FCL |
Specification of price |
FCL |
FCL |
FCL |
Price CNY/T |
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|
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Validity period of quoted price |
3 months |
3 months |
3 months |
Note: special requirements are negotiable for customers with specific specifications. |
