MAGNESIUM PYROPHOSPHATE Property

Melting point:

1383℃ [HAW93]

Density 

2.56 g/mL at 25 °C(lit.)

form 

Powder

color 

White

Water Solubility 

Soluble in dilute mineral acids. Insoluble in water.

Merck 

14,5684

Safety

Hazard Codes 

Xi

Safety Statements 

26-36

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P405Store locked up.

MAGNESIUM PYROPHOSPHATE Chemical Properties,Usage,Production

Description

Magnesium pyrophosphate has the molecular formula of Mg2P2O7 and the molecular weight of grams per mole. It may be prepared by the solid-state reaction of the dibasic orthophosphate, or alternately by the precipitation of a soluble Mg salt with aqueous pyrophosphoric acid:? 2MgHPO4 (or MgNH4PO4) + heat0Mg2P2O7 +H2O (+NH3)? MgCl2 (aq)+H4P2O7 (aq)0Mg2P2O7 (solid)+2HCl (aq)? In the solution method, the result is the hexahydrate, Mg2P2O7·6H2O. This is a white powder with a CAS number of 13478-16-5 and a molecular weight of 245.4073 g/mol. Its density is 1.71 g/cm³ and it is relatively insoluble in water or ethanol but soluble in acids.

Chemical Properties

colorless; monoclinic [CRC10]