Technical grade, white powder. P2O5 min 56%, Na5P3O10 min94%, Whiteness min 85%, Phase I 5-40, Fe max 70PPM

Sodium Tripolyphosphate (STPP)

Synonyms: triphosphoric acid pentasodium salt, pentasodium triphosphate, tripolyphosphate pentasodium, sodium triphosphate, STPP, armofos, empiphos stp-D, freez-gard FP 19, polygon, rhodiaphos H5, thermphos, tripoly Molecular formula: Na5P3O10

Specifications:

 

INDEX	SPECIFICATION	RESULT
ASSAY (NA5P3O10)	94% MIN	94.2% MIN
P2O5	57% MIN	57.61% MIN
FE	0.007%	0.007%
WATER INSOLUBLE MATTER	0.1% MAX	0.1% MAX
ARSENIC(AS)	0.0005% MAX	0.0004% MAX
PH(1% WATER SOLUTION)	9.2-10.0	9.5
WHITENESS	90		92
IGNITION LOSS	1.0		1.0
DENSITY(G/CM3)	0.35-0.9		0.8
PHASE L	10-30		26.3

Sodium Tripolyphosphate