... industrial use, such as oil field, paper-making, textile, dyeing, petrochemical industry, SHMPTechnical Specifications:No Specification Industrial grade Food grade 1 Total phosphate, as ... P 2 O 5 %≥ 68.0 68.0 2Inactive phosphate,as ... Qualified Qualified 6 Heavy metal, as Pb, %≤ - 0.001 7 Arsenic, as As, %≤ - 0.0003 8 Fluoride, as F, %≤ - 0.003 ...