IUPAC Name
pentasodium;[oxido(phosphonatooxy)phosphoryl] phosphate
Cas Number
7758-29-4
HS Code
28353110
Formula
Na5O10P3
Appearance
White Powder
Common Names
Pentasodium triphosphate
Packaging
25kg bags 25MT/20FCL
Brief Overview
STPP, or sodium tripolyphosphate, is a chemical that is frequently used to soak seafood to make it appear firmer and more glossy. It is also known as triphosphoric acid or pentasodium salt. STPP is also found in detergents and soaps. STPP is present in the majority of laundry and dishwasher detergent gel, liquid, tablet, and powder forms. It is generally considered safe as a food, but large amounts of the product ingested can be toxic.
Manufacturing Process
The production process typically consists of three main steps. 1. A sodium compound, for example sodium carbonate (Na2 CO3) or sodium hydroxide (NaOH) reacts with phosphoric acid to form a mixture which contains monosodium phosphate (NaH2 PO4) and disodium phosphate (Na4 HPO4). The phosphoric acid is achieved through either a wet process or a furnace process. 2. The mixture is precipitated from solution to a solid and insoluble impurities are removed. 3. The mixture is heated until it thermally decomposes or calcinates the monosodium and disodium phosphates into sodium tripolyphosphate (Na5P3O10). The heating also ensures that excess water is removed through volatilization. The product must then be milled into a powder, sieved, and packed before it is ready for sale.
Food Industry
Sodium Tripolyphosphate can be used as Preservative and Emulsifier in food such as in Seafood, meat, poultry to inhibit microbial.
Pharmaceutical Industry
Sodium Tripolyphosphate is widely used as Dispersant in Pharmaceutical. Health and Personal care Sodium Tripolyphosphate can be used in the formulation of bath products, colognes, dentifrices, mouthwashes, hair conditioners, hair dyes and colors, permanent waves, shampoos, makeup and skin care products in cosmetics and personal care products.
Agriculture/Animal Feed/Poultry Industry
Sodium Tripolyphosphate can be used as preservatives in Agriculture/Animal Feed/Poultry feed. In Other Industries Sodium Tripolyphosphate STPP can be used in detergents, ceramics, leather tanning (as masking agent and synthetic tanning agent – SYNTAN), anticaking, setting retarders, flame retardants, paper, anticorrosion pigments, textiles, rubber manufacture, fermentation.
