specification

(1).appearance: white powder or granular
(2).total phosphate(p₂o₅): ≥68.0%
(3) non-active phosphate(p₂o₅): ≤7.5%
(4).substances not dissolved in water: ≤0.06%
(5).fe: ≤ 0.05%
(6).ph value: 5.8-6.5
(7).as: ≤0.0003%
(8).pb: 0.001%
(9).fluorides: ≤0.003%