Item

Standard

Result

Potassium pyrophosphate (as K4P2O7)%　

98.0min

98.7

Assay （P2O5)%

42min

42.5

K2O content%

56 min

56.6

Iron %　

0.01max

0.005

Water innsoluble matter %

0.10max

0.08

Fluoride

10ppm max

6ppm

PH value

10.5±0.5

10.3

Loss on ignition （105℃/4 hrs,550 ℃/30mins）%

1.0max

0.6

particle size（though80 mesh）%

95min

95