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sodium acid pyrophosphate
White powder, melting point:60oC, soluble in water, insoluble in alcohol, it is dehydrated into anhydrous compound when being heated to 95oC. under the temperature of 190-204oC, transformed into sodium acid pyrophosphate, then condensation polymerize into sodium metaphosphate under the temperature of 204-244oC.
used in the wastewater treatment(biochemical treatment) , boiler water treating agent, metal electroplating solution, metal surface purifying agent, feed additive, quality improver, molten-products additive, etc.