Standard: HG/T2968-1988 Properties: white powder, RD is 2.45, melting point 890, PH value of 1% solu SODIUM PYROPHOSPHATE Uses: used as auxiliary agent, degrease, plating, or used as buffer, emulsifier, nutritious agent and modifier. No. Name Industry grade Food grade 01main assay (As Na4P2O7) %≥96.596.502Phosphorus pentoxide ( P2O5) %≥51.551.503Water insoluble matter %≤0.200.2004PH value (1% ...