• Mianyang Aostar Phosphorus Chemical Industry Co., Ltd.



    Sodium Tripolyphosphate (STPP)


    [ Catalog for Tech Grade ]


    1. Standard Executed: (GB/T9984-2008)
    2. Molecular Formula: Na5P3O10
    3. MW: 367.86
    4. Description:   Byname is Pent-sodium Phosphate. It is white powder. Melting point is 622°C. It is easily soluble in water. It has salient chelating capacity to ions of Ca, Mg etc. It can soften the hard water to make suspension become into the clear solution. It has weak alkalinity but no corrosiveness. It is a surfactant which has outstanding emulsification for lubricants and fat. 
      This product has two kinds of crystalline forms, namely Type I (the type of high temperature) and Type II (the type of low temperature). The chemical characters of the two types are the same, and the difference between them lies in the thermo stability
    5. Usage: It is used as one of the main auxiliaries agent for synthetic detergent, synergist for soap. Softener for water in industry. Tanning agent for making leather. An effective dispersion agent for suspension treatment of painting, kaolin, magnesium oxide, calcium carbonate and drilling mud etc. Resistance agent of the oil contamination in paper productionúČ ceramic application
    6. Packing: Plastic knit bag, net weight 25kg Besides, we can pack the goods according to the requirement of the client. Store at ventilated dry places.
    7. Technical Specifications

    Technical Specifications:


    Tech Grade

    For Export

    Main content % ≥


    P2O5 % ≥


    Water Insoluble Matter %≤


    Fe % ≤


    PH Value of 1% water solution


    Whiteness ≥





    Soluble in water