Name of commodity

Sodium tripoly phosphate

     (STPP)

Grade

Tech grade

Heavy

Inspection standard

GB/T9983-2004

Packing

In 25kg PP bag

Specifications

National standard

Inspection results

Assay Na5P3O10

94.0% min

P2O5

57.0% min

Water Insoluble Matter

0.1% max

Iron(Fe)

0.015% max

PH value(1% water solution)

9.2 -10.0

Whiteness

90% min

Phase I

10-30

Density

0.75 0.95