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  • Sodium Tripolyphosphate Raw Materials Sodium Tripolyphosphate Powder

    • Sodium Tripolyphosphate Raw Materials Sodium Tripolyphosphate Powder
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    Product Overview:

    Sodium Tripolyphosphate, also known as Pentasodium Phosphate, Sodium Metaphosphate, STPP, Pentasodium Tripolyphosphate. White powdery crystal, good fluidity, relative molecular mass 367.86, melting point 622 ℃, soluble in water, its aqueous solution is alkaline. Commonly used in food, as moisture retention agent, quality improver, pH regulator, metal chelating agent.

    Sodium Tripolyphosphate Raw Materials Sodium Tripolyphosphate Powder Attributes

    Sodium Tripolyphosphate Raw Materials Sodium Tripolyphosphate Powder

    CAS:7758-29-4

    MF:Na5O10P3

    Sodium Tripolyphosphate

    MW:367.86

    EINECS:231-838-7

    Specification: 99% min Sodium Tripolyphosphate Powder

    Sample:Sodium Tripolyphosphate Powder

    Packaging:1kg/bag, 25kg/drum

    Brand: Henrikang

    Appearance:White

    Storage: Cool Dry Place

    Shelf Life: 2 Years

    Test Method: HPLC

    Sodium Tripolyphosphate Raw Materials Sodium Tripolyphosphate Powder Details

    Sodium Tripolyphosphate Powder Usage and Synthesis.

    Sodium tripolyphosphate is a widely used product in detergents, fiber industry, water softening and boiler descaling, drilling slurry emulsifier, metal beneficiation and other fields. At present, some new production methods of sodium tripolyphosphate have been studied, such as Chinese Patent Application No. 94110486.9 and No. 200310105368.6.

    In addition, sodium tripolyphosphate has a good ability to complex metal ions and can form soluble complexes with metal ions such as calcium, magnesium and iron, which can be used to soften hard water and as an inorganic surfactant.

    Sodium Tripolyphosphate Powder

    Uses and Function of Sodium Tripolyphosphate.

    It is used as high efficient water softener for cooling water treatment in power stations, rolling stock, boilers and fertilizer plants. It has strong ability to complex Ca2+, 19.5g of calcium can be complexed per 100g, and due to the chelating effect and adsorption and dispersion of SHMP, it destroys the normal growth process of calcium phosphate crystals, and prevents the formation of calcium phosphate scale. The dosage is 0.5mg/L, and the rate of preventing scale formation is 95%~100%.

    Sodium tripolyphosphate is used in detergents, as an additive, soap synergist and prevent bar soap crystallization and frosting, industrial water softener, tanning pre-tanning agent, dyeing auxiliaries, oil wells digging mud control agent, paper with oil pollution prevention agent, paint, kaolin, magnesium oxide, calcium carbonate and other suspensions to deal with effective dispersing agent. Edible grade sodium tripolyphosphate can be used as food improver for various fish and meat products, clarifying agent for beverages.

    It can be used as food improver for fish and meat products, clarifying agent for beverages. It can also be used as food improver to increase the complexing metal ions, pH value and ionic strength of food products, thus improving the adhesion and water-holding property of food products. China's regulations can be used in dairy products, fish products, poultry products, ice cream and instant noodles, the maximum use of 5.0g/kg; in canned food, fruit juice (flavored) beverages and plant protein beverages, the maximum use of 1.0g/kg.

    Sodium Tripolyphosphate

    Preparation of Sodium Tripolyphosphate.

    Sodium tripolyphosphate is traditionally prepared by neutralizing hot phosphoric acid with a soda ash suspension with a mass fraction of H3PO4 of 75% to produce a neutralized slurry with Na/P of 5:3, which is held at 70°C to 90°C; after which the obtained slurry is sprayed into a polymerization furnace to dehydrate at high temperature and condense into sodium tripolyphosphate at about 400°C.

    Sodium Tripolyphosphate Raw

    Product Methods of  Bulk Sodium Tripolyphosphate Powder.

    Recrystallization method

    Industrial sodium tripolyphosphate will be dissolved in water at 60 ~ 70 ℃, formulated into 17% ~ 22% solution, and filtered to remove insoluble impurities; and then by vacuum concentration, cooling crystallization, separation, drying that is the product.

    Thermal phosphoric acid two-step method

    In the neutralization tank with edible soda ash and food-grade pyrophosphoric acid formulated as 50% to 60% of the solution, the neutralization solution into the intermediate storage tank, by the pump to the spray drying tower for spray drying; powder sent to the rotary polymerization furnace, heated to 540 ~ 580 ° C dehydration and polymerization, in the air cooling that is disintegrated into a powder. Add ethanol in the aqueous solution of anhydrous material, hexahydrate can be precipitated.

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