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Tetra Potassium Pyrophosphate
Molecular formula:K4P2O7
Molecular weight:330.35
Property:White powder or mass, specific gravity: 2.534, M.P.: 1109 in water, insoluble in ethanol and its aqueous solution is alkali. Solubility (25℃): 187g/100g water; PH (1% aqueous solution): 10.2; It has the same properties as other condensed phosphate.
Usage:

In tech field : mainly used as complexing agent in cyanogen-free electroplating, substituting for sodium cyanide. It also can be used as pretreating agent in electroplating and pyrophosphoric acid electroplating solution, as ingredient and additive in all kinds of detergents and metal surface treating agent, as clay dispersant in ceramic industry, as dispersant and buffering agent in pigment and dyes, to remove a small amount of ferric ion from water in blanching and dyeing industry to improve quality. 

In food field : As emulsifier of dairy products etc.

Packing:Net in 25KG Plastic Woven Bag
Specification:

SPECIFICATIONS

TECH GRADE

FOOD GRADE

Appearance

White powder

White powder

Main content (K4P2O7)

98.0% min

98.0% min

Iron (Fe)

0.01% max

0.01% max

PH value(1% sol)

10-11

10-11

Water insoluble water

0.10% max

0.10% max

Heavy metals (as Pb)

---

0.001% max

As

---

0.0003% max

Lead

---

0.0004% max