Specification

Technical grade

Food grade

Appearance

White powder

White powder

Content (base on Na₃PO₄)                  %

≥98

≥98

P2O5 content                                   %

≥42.4

≥42.4

Alkalinity (base on Na₂O)

36-40

36-40

Phosphoric anhydride (base on P₂O₅) %

≥39.5

≥39.5

pH value (1% water solution)  

11.5-12.5

11.5-12.5

Loss on ignition                                %

≤2.0

2.0

Sulfate (base on SO₄)                      %

-

≤0.05

Fluoride (base on F)                         %

-

≤0.005

Chloride (base on Cl)                           %

-

≤0.014

Heavy metal (base on Pb)                   %

-

≤0.001

Arsenic (base on As)                           %

-

≤0.0003