Usage：Used in industries of oil fields, paper production, textile, dyeing, petroleum, chemistry, metallurgy and construction materials etc. as water softener, flotation selecting agent, disperser and high temperature adhesive; In food industry it used as an additive, nourishing agent, quality improver, pH regulator, metal ions chelating agent, adhesive and leavening agent etc.
Standard:
Item Unit Specification
Tech grade Food grade
Total phosphate as P2O5: % 68 min 68 min
Inactive phosphate as P2O5: % 7.5 max 7.5 max
Iron as Fe: % 0.05 max 0.05 max
Ph of 1% water solution: - 5.8-7.3 5.8-6.5
Heavy metal as Pb: % 0.001 max
Arsenic as As: % 0.0003 max
Fluoride as F: % 0.003 max
Water insoluble: % 0.5 max 0.05 max
Whiteness % 90 min 90 min
