NO. Item Standard Result 1 Maincontent%≥ 95.0 95.0 2 P2O5%≥ 64.0 64.2 3 Waterinsolublematter%≤ 1.0 1.0 4 PHvalue(1%solution) 3.5-4.5 4.2 5 Heavymetal(AsPb)%≤ 0.002 0.0015 6 Arsenic(AsAs)%≤ 0.0003 0.00026 7 Fluoride(AsF)%≤ 0.005 0.0048 8 WHITENESS%≥ 90 91.5 9 Chloride,asCI%≤ 0.2 0.19 10 Through100meshsieve%≥ 95.0 95.0 11 Lossonignition(105°C)%≤ 0.5 0.481