Sell STPP 94%

Product name: Sodium Tripolyphosphate (STPP)
IUPAC name : Sodium Tripolyphosphate ; STPP; STP; TPP; Triphosphoric acid; pentasodium triphosphate; Pentasodium Tripolyphosphate; Sodium Phosphate Tripoly; pentasodium salt; triphosphoric acid, sodium salt;
Molecular Formula: Na5P3O10

Molecular Weight: 367.86
CAS No.: 7758-29-4
Einces: 237-004-9
H.S. CODE : 2835.31.90
Properties: white powder; melting point 622'C; 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. It has different bulk density, i.e. Low density 0).
Specification of Sodium Tripolyphosphate(STPP) :
Indexes Industrial Grade Food Grade
Na5P3O10 94.0%Min 94.0%Min
P2 O 5 57.0%Min 57.0%Min
Water Insoluble Matter 0.15%Max 0.04%Max
Iron(Fe) 0.015%Max 0.006%Max
PH value (1% water solution) 9.2-10.0 9.5-10.0
Heavy Metal (as Pb) 0.001%Max
Arsenic (As) 0.0003%Max
Fluoride (F) 0.003%Max
Whiteness 92%Min 92%Min
Ignition loss 1.0 /
density (g/cm3) 0.35-0.9 0.35-0.9
Phase I 10-30 10-30
Preparation:
PhosphateWithSodaIn and to a certainDisodium hydrogen phosphateAndSodium dihydrogen phosphate(2:1), the ratio of the mixture to dry (get orthophosphate dry material), and then at 350 ~ 450 ?° C under polymerization generates sodium tripolyphosphate, and then by cooling, crushing, obtained Tripolyphosphate sodium finished product.
4Na2HPO4 + 2NaH2PO4 →2Na5P3O10 + 4H2O
Application:
1) .as one of the main auxiliaries for synthetic detergent, synergist for soap; water softener.
2).Tanning agent for leather making, auxiliary for dyeing;
3).As an effective dispersion agent for suspensions of coatings, kaolin, magnesium oxide, calcium carbonate and drilling mud etc.;
4).As an oil contamination resistance agent in paper production.
5).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.
Packaging:
50kg or 25Kg plastic woven bag net weight, 1000kg jumbo bag, or as the clients?ˆ™ request.

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