●Content of total Phosphorus (P):≥17.0-18.0%
●Content of water-soluble phosphorus (P):≥85.0%
●Content of Ca:≥21..0%
●F:≤0.18%

●Main Content %≥:98.0
●P2O5 %≥:58.0
●PH Value(1% aqueous solution):4.2-4.8
●Water Insloblue Matters %≤:0.1

●Assay /%:≥99.0
●Water insoluble/%:≤0.005
●Chloride (Cl)/%:≤0.001
●Sulfate (SO4)/%:≤0.01

●Main content (Na3PO4):98% min.
●Phosphorus pentoxide (as P2O5):42.4% min.
●Water insoluble:0.10% max
●Sodium oxide (as Na2O):36 - 40%

●AssayNa5P3O10 % ≥:94.0
●P2O5 % ≥:57.0
●Water Insoluble Matter %≤:0.1
●Iron(Fe) %≤:0.01

●Appearance:White powder
●Assay(as Na2H2P2O7)%≥:95.0
●P2O5%≥:63.0-64.0
●PH Value:3.5-4.5