Tetrapotassium Pyrophosphate (TKPP) E450, CAS no.7320-34-5, white powder, a potassium salt of phosphoric acid manufactured from Dipotassium Phosphate. Tetrapotassium Pyrophosphate is used as buffering agent, emulsifier, dispersing agent and thickening agent in food production.

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Tetrapotassium Pyrophosphate Specification
ITEM STANDARD
ASSAY K4P2O7) 98.0% MIN
APPEARANCE WHITE POWDER
WATER SOLUBLE 0.2% MAX
PH 9.9-10.7
ARSENIC( AS) 3PPM MAX
LOSS ON IGNITION 2.0% MAX
Pb (PPM) 5 MAX
HEAVY METAL( PB) 15 PPM MAX
ASRENIC(AS) 3 PPM MAX
FLUORID( PPM) 10 MAX