Item    

Industrial Grade

Food Grade

Appearance:

white powder          

white powder          

Content (Na₂HPO₄):

≥98%

≥98%

P₂O₅ content:

≥49%

≥49%

PH (1% aqueous solution):

8.5-10.0

8.5-10.0

Water-insoluble matters:

≤0.1%

≤0.1%

Loss on drying:

≤2.0%

≤2.0%

Sulfate (SO₄):

≤0.05%

Chloride (Cl):

≤0.014%

Fluoride (F):

≤0.005%

Heavy Metal (Pb):

≤0.001%

Arsenic (As):

≤0.0003%

Item    

Industrial Grade

Food Grade

First Grade

Salable Grade

Content (Na₂HPO₄.12H₂0):

≥97%

≥96%

≥98%

PH (1% aqueous solution):

8.8-9.2

8.8-9.2

8.8-9.2

Sulphate:

≤0.7%

≤1.2%

≤0.25%

Chloride:

≤0.05%

≤0.10%

≤0.03%

Water insoluble matter:

≤0.05%

≤0.10%

≤0.05%

Fluoride (F):

≤0.05%

≤0.005%

Heavy metals:

≤0.001%

Arsenic ( As ):

≤0.005  

≤0.0003%

Loss on dry (Na₂HPO₄):

≤5.0%