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    Sodium Tripolyphosphate

    Sodium tripolyphosphate (STPP) is an antioxidant, preservative, and texture enhancer that helps retain moisture, improve tenderness.


    Chemical name: Sodium tripolyphosphate; Pentasodium triphosphate; STPP

    CAS Number: 7758-29-4

    EINECS Number: 231-838-7

    Molecular formula:Na5P3O10O 6

    Molecular weight:367.86

    Product Standard: GB/EP/USP/FCC


    25kg paper-plastic composite bag lined with PE film.

    Storage Condition: Kept in a light-proof,well-closed, dry and cool place.

    Shelf life: 2 years.

    Buying Guide:

    Sodium Tripolyphosphate STPP

    Mondstar offers a diverse range of chemical products and is your preferred supplier of food additives and ingredients, providing high-quality sodium tripolyphosphate STPP wholesale and export services. Learn about sodium tripolyphosphate price, or for more information, you can directly contact [email protected] or call +86-17303712627.


    Product Overview

    Sodium tripolyphosphate STPP is an inorganic compound, also known as pentasodium triphosphate or sodium triphosphate. It appears as a white crystalline powder. STPP is soluble in water, forming alkaline solutions, and also soluble in acids but insoluble in organic solvents. In food processing, STPP is used as an acidity regulator, chelating agent, and preservative. In industrial applications, STPP is utilized as a water treatment chemical, detergent, cleaner, and flame retardant.


    Item Index Result
    Main Content (as Na5P3O10) ≥95.0% 95%
    Phosphoric anhydride ≥57.0% 57%
    Water-insoluble ≤0.05% 0.02%
    Fe (as Fe) ≤0.01% 0.001%
    PH value 9.4-10.0 9.4-10.0
    Heavy metal (as Pb) ≤0.001% 0.0008%
    Arsenic (as As) ≤0.0003% 0.0003%
    Fluoride (as F) ≤0.003% 0.001%
    Granularity ordinary powder

    16-mesh screening volume

    35-mesh screening volume

    100-mesh screening volume

    Fine powder 100 mesh screening volume













    whiteness ≥90.0% 90.0%
    The main application of Sodium Tripolyphosphate
    • Sodium tripolyphosphate in food processing functions as an acidity regulator, chelating agent, and preservative, helping to adjust the acidity of various food products.
    • Sodium tripolyphosphate in meat is used to enhance moisture retention, improve texture, and preserve flavor.
    • Sodium tripolyphosphate in sausage improves texture, binding ingredients effectively, and aids in moisture retention.
    • Sodium tripolyphosphate stpp in laundry and cleaning detergents is a crucial component, offering emulsifying, dispersing, softening, anti-redeposition, and anti-scaling properties in household cleaners, laundry powders, dishwashing liquids, and all-purpose cleaners.
    • Sodium tripolyphosphate STPP in water treatment acts as an anti-corrosive, anti-scaling agent, and detergent builder, effectively chelating with metal ions to prevent deposition and scale formation.
    • Sodium tripolyphosphate uses in oil drilling to control wellbore stability and mud properties during drilling operations.

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