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Stannous Pyrophosphate Cas 15578-26-4

Tin pyrophosphate, chemical formula Sn2P2O7, molecular weight 411.32, amorphous powder. Obtained by heating tin (II) dihydrogen diphosphate at 350-400 ℃. Mainly used for tin plating in cyanide free electroplating. Used as a filler in toothpaste, it has a slight dissociation in toothpaste and has a certain effect on preventing dental diseases. The printing and dyeing industry is used for dyeing, while the ceramic industry is used for refining clay. Proper addition in the paint industry can alleviate the settling speed of paint fillers in paint and improve paint performance. It is also used for cyanide free electroplating (tin plating), toothpaste fillers, and refining of clay.
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  • 15578-26-4

  • bosschemical

  • 15578-26-4

Stannous pyrophosphate Basic information
Product Name: Stannous pyrophosphate
CAS: 15578-26-4
MF: O7P2Sn2
MW: 411.36
EINECS: 239-635-5
Mol File: 15578-26-4.mol
Stannous pyrophosphate Chemical Properties
Melting point >400°C (dec.)
density 4,01 g/cm3
storage temp. Refrigerator
solubility insoluble in H2O; soluble in concentrated acid solutions
form Powder
color White
Specific Gravity 4.01
Odor Odorless
Water Solubility Insoluble in water.
Merck 148,788
Exposure limits ACGIH: TWA 2 mg/m3
NIOSH: IDLH 100 mg/m3; TWA 2 mg/m3
LogP -1 at 20℃
CAS DataBase Reference 15578-26-4(CAS DataBase Reference)
EPA Substance Registry System Diphosphoric acid, tin(2+) salt (1:2) (15578-26-4)


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