... such as Ca, Ba, Mg, Cu and Fe Application: 1. Technical grade: Used in such industries as oil field, paper-making, textile ... -25mt/20 feet container No.SpecificationsIndustrial GradeFood Grade1Total phosphate, as P2O5%≥68.068.02Inactive phosphate, as P2O5%≤7.57.53Iron, as Fe ... %≤0.050.054Ph value (1% solution) %≤5.8-7.35 ...