· Total phosphate, as P2O5
|
68.0% min
|
· Inactive phosphate, as P2O5
|
7.5% max
|
· Iron (Fe)
|
0.05% max
|
· Water insoluble matter
|
0.05% max
|
· Heavy metal as Pb
|
--
|
· Ph value (1% water solution)
|
5.8-7.3
|
· Arsenic (As)
|
--
|
· Solubility
|
Qualified
|
· Fluoride
|
--
|