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Sodium Tripolyphosphate (STPP)

CAS Number:

7758-29-4

Other Trading Names:

  • Sodium Triphosphate (STPP)
  • Tripolyphosphate (TPP)

Types of Packaging

  • 25Kg Bags /27 Tons/ 20ft Container

HS Code:

283531

Inquiry right-arrow $1,075.00
Availability: In stock
SKU
Sodium Tripolyphosphate

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Item Value
Purity 94%
Melting Point 622 °C
Boiling Point Unavailable
Density 2.52g/cm3
Solubility 14.4g/100mL
Viscosity Not Relevant
pH 9.2 - 10.0
Bulk Density Unavailable
Molar Mass 367.864g/mol

Sodium Tripolyphosphate is an inorganic chemical. It's the sodium salt of the polyphosphate penta-anion, which is a triphosphoric acid's conjugate base. It is widely used as a component in various residential and industrial products, particularly detergents. Its widespread use is blamed for the environmental problems connected with eutrophication. It has the chemical formula Na5P3O10. It is produced in the laboratory by heating a stoichiometric mixture of disodium phosphate and monosodium phosphate under carefully controlled conditions.

Chemical Appearance

The chemical has the appearance of a whitish powder. It exists both in anhydrous and hexahydrate forms. It is soluble in water. It is a non-flammable and non-toxic chemical.

Chemical Applications and Strengths

Sodium Tripolyphosphate is an extremely useful inorganic chemical. It is used for various purposes in a wide range of fields. Its main functions, uses, and applications include:

  • It is used as a component of commercial detergents.
  • It is a preservative for seafood, meat, animal feed, and poultry.
  • It is used as an emulsifier and helps retain moisture in food.
  • It is used as a masking agent in leather tanning.
  • It is used in ceramics to decrease the viscosity of glazes up to a specific limit.
  • It is used in anti-caking agents.
  • It is used as an anti-corrosion pigment.
  • It is used as a flame retardant.
  • It is used in the manufacture of rubber.
  • It is used as an anti-freeze agent.
  • It is useful in textile production.
  • It is used in toothpaste.
  • It is useful in the process of fermentation.
  • It is used as a synthetic tanning agent (SYNTAN) in leather tanning.
  • It is used as a polyanion crosslinker in polysaccharide-based drug delivery.
  • It is used in water treatment.
  • It is used in paints and varnishes.
  • It is used in petroleum refining and metallurgy.

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Sodium Tripolyphosphate (STPP)