Tin (II) Pyrophosphate

Tin Pyrophosphate
Tin Pyrophosphate
Are common
Systematic ; name	Tin (II) Pyrophosphate
Traditional names	tin phosphate
Chem. formula	Sn 2 P 2 O 7
Physical properties
condition	colorless crystals
Molar mass	411.32 g / mol
Density	4,009 g / cm³
Classification
Reg. CAS number
PubChem
Reg. EINECS number
Smiles
Inchi
ChemSpider

Tin (II) pyrophosphate is an inorganic compound, a salt of tin metal and pyrophosphoric acid with the formula Sn ₂ P ₂ O ₇ , colorless crystals, insoluble in water.

Content

Getting

Tin hydrogen phosphate heating:

{\mathsf {2SnHPO_{4}\ {\xrightarrow {T}}\ Sn_{2}P_{2}O_{7}+H_{2}O}}

{\ displaystyle {\ mathsf {2SnHPO_ {4} \ {\ xrightarrow {T}} \ Sn_ {2} P_ {2} O_ {7} + H_ {2} O}}}

Exchange reaction with sodium pyrophosphate :

{\mathsf {Na_{4}P_{2}O_{7}+2SnCl_{2}\ {\xrightarrow {\ }}\ Sn_{2}P_{2}O_{7}\downarrow +4NaCl}}

{\ displaystyle {\ mathsf {Na_ {4} P_ {2} O_ {7} + 2SnCl_ {2} \ {\ xrightarrow {\}} \ Sn_ {2} P_ {2} O_ {7} \ downarrow + 4NaCl} }}

Physical Properties

Tin (II) pyrophosphate forms colorless crystals of cubic syngony , space group Pa3 , cell parameters a = 0.791 nm, Z = 4.

Application

It is mainly used for electroplating .
As an additive in toothpastes, it has a certain effect on the prevention of dental diseases.
Used in the dye industry for dyeing.
For refining pottery clay.
It is added to paints to improve the properties of paints.

Literature

Chemistry Handbook / Editorial: Nikolsky B.P. et al. - 2nd ed., rev. - M.-L.: Chemistry, 1966. - T. 1. - 1072 p.
Chemistry Handbook / Editorial: Nikolsky B.P. et al. - 3rd ed., rev. - L .: Chemistry, 1971. - T. 2. - 1168 p.