Specifications

Tech  Grade

Food  Grade

FCC IV

Main contents %≥

98.0

98.0

98.0  

Phosphorus pentoxide, as P₂O₅ %≥

49.0

49.0

48-50

PH of 1% water solution

8.5-10.0

8.5-10.0

8.8-9.2

Heavy metals, as Pb

10pm

15ppm

Arsenic, as As

3ppm

3ppm

Fluoride, as F

50ppm

50ppm

Water insoluble %≤

0.10

0.10

0.2

Loss on drying

1.0