●Main content% ≥:98.0
●Phosphorus pentoxide% ≥:53.0
●Nitrogen, as N % ≥:20.8
●PH value of 1% solution:7.8-8.2

●Main contents% ≥:98.0
●Phosphorus pentoxide% ≥:61.0
●Nitrogen, as N % ≥:11.8
●PH of 1% water solution:4.4-4.8

●Phosphorus(P) %≥:22.0
●Water soluble phosphorus(P) %≥:20.0
●Calcium(Ca) %:13.0-16.5
●Fluorine(F) % ≤:0.18

●Main contents  % ≥:99.0
●P2O5 % ≥:51.50
●Potassium oxide (K2O)   % ≥:34.0
●PH value of 1% solution:4.3-4.7

●NaH2PO2-H2O %≥:101.0
●Na2HPO3 %≤:0.20
●Ca %≤:0.003
●Fe %≤:0.0001

● Sodium Pyrophosphate Na4P2O7 %≥:96.5
●P2O5  %≥: 51.5
●PH (1% aqueous solution) :9.9-10.7
●Size (through 60mesh sieve) %≥:90

●Appearance:Colorless, transparent syrupy liquid or in very light color
●Colour ≤:30
●Assay (as H3PO4 )% ≥:85.0
●Chloride(as Cl -) % ≤:0.0005

●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%