Sodium tripolyphosphate(STPP)

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Sodium tripolyphosphate(STPP)
Indexes      Industrial Grade     Food Grade
Na5P3O10%≥      94.0      94.0
P2 O 5  %≥     57.0      57.0
Water Insoluble Matter%≤       0.15      0.04
Iron(Fe) %≤     0.015      0.006
PH value (1% water solution)      9.2-10.0     9.5-10.0
Heavy Metal (as Pb) %≤     -     0.001
Arsenic (As)  %≤     -     0.0003
Fluoride (F) %≤     -     0.003
Whiteness %≥     92      92
density (g/cm3)      0.35-0.9     0.35-0.9
Phase I      10-30     10-30


Packing:  In 25Kg or 50 Kg or 1000 Kg net WPP/PE bags.

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