POTASSIUM PYROPHOSPHATE

 

FORMULA: K4O7P2

 

M. W.: 330.3

 

CAS NO.: 7320-34-5

 

GRADE: TECH. GRADE

 

DESCRIPTION: WHITE POWDER OR LUMP, EASY TO DELIQUESCE. RELATIVE DENSITY IS 2.534. MELTING POINT IS 1109℃. SOLUBLE IN WATER, INSOLUBLE IN ETHANOL. THE WATER SOLUTION IS ALKALI. WHEN AT 25℃,THE SOLUBILITY OF 100g WATER IS 187g. THE PH VALUE OF THE WATER SOLUTION IS 10.2 WHEN THE CONCENTRATION OF WHICH IS 1%. POTASSIUM PYROPHOSPHATE HAS ALL THE PROPERTIES OF THE OTHER CONDENSED PHOSPHATES.

 

SPECIFICATIONS:

K4O7P2

96.0% MIN

IRON

0.03% MAX.

WATER INSOLUBLES

0.10% MAX

PH (1% WATER SOLUTION)

10-10.7

ORTHPHOSPHATE

IN CONFORMITY TO REQUIREMENT

 

USES: INSTEAD OF SODIUM CYANIDE, IN NO CYANIDE ELECTROPLATING AS A COMPLEX. ALSO USED AS A PRETREATMENT AGENT IN ELECTROPLATING AND IN PYROPHOSPHATE ELECTROLYTE, AND AS CONSTITUENT IN PREPARATION OF CLOTHES DETERGENT, METAL-SURFACE-WASHING AND BOTTLE-CLEANSING DETERGENT, OR AS AN ADDITIVE TO ALL KINDS OF DETERGENT, BESIDES. IT CAN ALSO BE USED AS CLAY DISPERSING AGENT IN CHINAWARE INDUSTRY AND AS DISPERSING AGENT AND BUFFER IN PIGMENT AND DYESTUFF. AND USED TO SEPARATE AND REMOVE THE SMALL QUANTITY OF TRIVALENCE IRON IONS LEFT IN WATER IN BEACH-DYEING INDUSTRY SO AS TO IMPROVE THE BLEACHING AND DYEING QUALITY.

 

PACKING:   PACKED IN 25 KGS OR 50KGS INTERWEAVE BAG LINNER WITH PLASTICS BAG.

 

H.S. NO.: 2835.2900