|
ITEM
|
INDEX
|
||
|
Excellent
|
I Grade
|
Acceptable
|
|
|
Hydrochloric acid content (as P2O5), %≥
|
68.0
|
67.0
|
65. 0
|
|
Non-active phosphate content(P2O5), %≤
|
7.5
|
8.0
|
10.0
|
|
Water insoluble content %
|
0.05
|
0.10
|
0.15
|
|
Fe %
|
0.02
|
0.10
|
0.20
|
|
PH Value
|
5.8-7.3
|
||
|
Solubility
|
acceptable
|
||
|
Average degree of polymerization
|
10-16
|
||
Package: 50kg pp bag