STPP (Sodium Tripolyphosphate )

1.Name: STPP(Sodium Tripolyphosphate ) 2.Molecular formula:Na5P3O10 3.Molecular Weight: 367.86 4.7758-29-4;13573-18-7

4.Properties: White powder; Melting point 622C; Easily soluble in water; It has got salient chelating capacity to ions of Ca and Mg etc. and can soften hard water to make suspension solution become into clear solution; It has got weak alkalinity but no corrosiveness. It is a surfactant, and has got outstanding emulsification to lubricants and fat. 5.Uses:Used as one of the main auxiliaries for synthetic detergent, synergist for soap; water softener, tanning agent for leather making, auxiliary for dyeing; As an effective dispersion agent for suspension solutions of coatings, kaolin, magnesium oxide, calcium carbonate and drilling mud etc.; As an oil contamination resistance agent in paper production. In foodstuff industry it is used as quality improver in the process of canned food, fruit juice drinks, foodstuffs from milk or soybeans. It may tender the meat in canned ham and soften the skin of horse bean in canned horse bean. It may also serves as a softener or densifier in foodstuff industry.6.Packing:In 25Kg net WPP/PE bags.7.Storage:It must be prevented from Dampness and water. Don't store it in the open air.

ITEM	STANDARD	TEST
CONTENT (Na5P3O10)	≥95.0%	96.3%
P2O5	≥57.0%	57.2%
APPEARANCE	WHITTE POWDER	PASS
WATER INSOLUBLE	≤0.05%	0.02%
SULPHATES	≤0.4%	0.3%
CHLORIDES	≤0.0025%	0.0023%max
FLUORIDE(As F)	≤0.003%	0.001
ARSENIC(As)	≤0.0003%	0.0003%max
PH	9.5-10.0	9.8
WHITENESS	≥85	85min
HEAVY METAL (as Pb)	≤0.001%	0.001% max

STPP (Sodium Tripolyphosphate )