BARIUM PYROPHOSPHATE Chemical Properties

Density 

3.900

solubility 

soluble in acid solutions

form 

white powder

color 

white

Water Solubility 

0.01 g/100mL H2O; soluble acids, NH4 salts [CRC10] [HAW93]

Solubility Product Constant (Ksp)

pKsp: 10.5

CAS DataBase Reference

13466-21-2

EPA Substance Registry System

Diphosphoric acid, barium salt (1:2) (13466-21-2)

Safety Information

Hazard Codes 

Xn

Risk Statements 

20/22

Safety Statements 

28

RIDADR 

UN 1564 6.1 / PGIII

WGK Germany 

3

BARIUM PYROPHOSPHATE Usage And Synthesis

Description

Barium pyrophosphate has the molecular formula of Ba2P2O7 and the molecular weight of 448.5973 g/mol. It has the CAS number of 13466-21-2 and may be prepared by the solid-state reaction of the dibasic orthophosphate, or alternately by the precipitation of a soluble Ba salt with aqueous pyrophosphoric acid:
2Ba HPO4 + heat ? Ba2P2O7 +H2O
BaCl2 (aq) +H4P2O7 (aq) ? Ba2P2O7 (s) + 2HCl (aq)
The solution method produces a dihydrate, Ba2P2O7·2H2O.

Chemical Properties

White powder. Soluble in acids and ammonium salts; very slightly soluble in water.

Uses

Ba₂P₂O₇ is a promising phosphor host material, showing different emission properties upon doping with rare earth and other elements. Bi doped Ba₂P₂O₇ crystals exhibit broadband NIR photoluminescence.

BARIUM PYROPHOSPHATE(13466-21-2)Related Product Information

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