1

P2O5 content%

≥99%

≥99.5%

≥99.5%

2

Active R value

1.2

1.7

2.0

3

Reduzate(as P2O3)%

≤0.01

≤0.008

≤0.005

4

Clarity test

  Qualified

Qualified

Qualified

5

Water insoluble%

≤0.02

≤0.01

≤0.01

6

Nitrogen content%

≤0.01

≤0.002

≤0.001

7

Heave metals (as Pb)%

≤0.01

≤0.002

≤0.001

8

Ferum (as Fe)%

≤0.01

≤0.002

≤0.001

9

Arsenic (as As)%

≤0.01

≤0.007

≤0.0025