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Sell Stpp 94%

Posted at: Offers to Sell and Export | Posted on: Sat 20 Mar, 2010 3:02 am |
stpp 94
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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


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


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.


50kg or 25Kg plastic woven bag net weight, 1000kg jumbo bag, or as the clients’ request.

Company Contact:

kinglight03 photo
Contact Name: Susan
Company Name: Hebei Kinglight Chemicals Co. Ltd
Email: Email
Tel: 86-311-87025118
Fax: 86-311-87029116
Street Address: No.591 Xinhuaroad,
Shijiazhuang, Hebei, China
Website: http://www.kinglightchem.com
Member name: kinglight03
Country: China-CN China
Member Since: 20 March 2010
Total Leads: 15 kinglight03 Import Export Business Leads
Business focus: Carbon Black, Zinc Oxide, Sodium Hexametaphosphate, Sodium Metabisulphite, Stpp, Formic Acid, Glacial Acetic, Pentaerythritol, Iron Oxide, Lithopone
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