... , Mg, Cu and Fe Application: 1. Technical grade: Used in such industries as oil field, paper- ... agglomerant, detergent and soil analytical chemical reagent; 2. Food grade: Mainly used as additive agent, pH adjusting agent ... container No.SpecificationsIndustrial GradeFood Grade1Total phosphate, as P2O5%≥68.068.02Inactive phosphate, as P2O5%≤7.57.53Iron ... 050.06 SHMP Sodium Hexametaphosphate 68% food grade