The primary replacements for STPP in granular detergents are zeolites. These materials are insoluble sodium aluminosilicates, which act by exchanging their sodium with calcium ions. They are safe and inexpensive materials, but they suffer from several drawbacks: they bind calcium only, their binding action is quite slow, and they can form visible deposits on fabrics. A possible improvement could come in the future from a reduction of Zeolite particle size. More commonly, these issues are dealt with by adding a second builder, such as citrate (see below) or polymers such as polyacrylates, which provide additional soil suspension properties.
Two other builders used in granular formulations are layered silicates (ion exchange builder used in some European granules) and sodium carbonate. Both provide alkalinity in addition to builder functionality; the attractiveness of carbonate is somewhat reduced by its slow action and its tendency to produce fabric encrustation.
1. Product Description
Appearance : white granular or powder
Sodium Tripolyphosphate is an inorganic compound with formula Na5P3O10. Sodium triphosphate is the sodium salt of the polyphosphate penta-anion, which is the conjugate base of triphosphoric ACID .Sodium tripolyphosphate is produced by heating stoichiometric mixture of disodium phosphate, Na2HPO4, and monosodium phosphate, NaH2PO4, under carefully controlled conditions.
2. Specification
| ITEM | INDEX |
| Tech. Grade | Food Grade |
| Na5P3O10 (%): | 94Min | 95Min |
| P2O5 (%): | 57Max | 57Max |
| Insolubles in water (%): | 0.15Max | 0.05Max |
| Fe (%): | 0.007Max | N |
| Ph (1% solution): | 9.2-10 | 9.5-10 |
| Heavy Metal (As Pb) (%): | N | 0.001Max |
| Arsenic (As) (%): | N | 0.0003Max |
| Fluoride(F) (%): | N | 0.003Max |
| Whiteness(%): | 90Min | 90Min |
| Density (g/cm3) | 0.35-0.9 | 0.35-0.9 |
| type content (%) | 10-30 | 10-30 |
3. Usage
Used in 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.
4. Packing
25kg / 50kg/ 1 ton jumbo bag.
5. Storage and and transportation
It should be stored in a dry, ventilative and clean warehouse; kept away from moisture and heat and stored separately from.
We are Chemicals Manufacturer since 1998, Our material can be used in Pigment, Resin , Detergent, ACID, Water Treatment, Plasticizer etc, if there is any demand on Sodium Tripolyphosphate, Sodium Hexametaphosphate, Titanium Dioxide, Carbon Black, Chromium Oxide Green Pigment, quotation and sample, Pls feel free to contact us in 24/7. Welcome your field inspection and expect 2020 cooperation.
Product Categories : Detergent > Sodium Tripolyphosphate
