... 16-9 Appearance: White gran-ular or powder Common Name: Sodium Dihydrogn Pyrophosphate (SAPP)CAS No.:7758-16-9Molecular Formula: ... : White gran-ular or powderSpecifications:Na2H2P2O7,% ≥95.0Substances not dissolved in water% ≤1.0As% ≤0.0003Heavy metal(Pb)% ≤0.002Fluorides% ... buffer, expansion agent, chelat-ing agent, addesiuve agent; Used in cheese,lunch,meat,ham,crab meat tin,bread,cake trade ...