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dimethyl-oxalate-cas-553-90-2-2
dimethyl-oxalate-cas-553-90-2-2

STANNOUS FLUORIDE/CAS:7783-47-3

Chemical Name:Tin(II) fluoride
Molecular Formula:F2Sn
Formula Weight:156.71
CAS No.:7783-47-3

Category: Dissolvant
Product name: Stannous fluoride (high purity)
Molecular formula: SnF2
CAS NO.: 7783-47-3
Index: 99.9
Other: Structural formula: SnF
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

Other product:Acetyl Tetrapeptide-3/CAS:827306-88-7

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