... air.5.Quality standard(HG2789-1996, FCC-IV) Name of indexHG2789-1996FCC-IVAppearancewhite floating, crystalline powdercontent(Ca),%34.0- ... metals(Pb),≤%0.0020.0015Pb,≤ %-0.0005Loss on heating(200°C) ≤ %10.0-Loss on heating(800°C) ≤ %-10.0Clear ... , nutritional supplement, calcium intensifier, PH regulator , buffer. To act as anticoagulant, additive for milk powder , sweets, pudding, flavoring and meat, ...