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        Ultrapure

        High purity Colloidal silica

        This kind of product mainly applies to the food, the beverage, the electrolyte, the catalyst etc, which has the high profession of the impurity content reques.

        Item

        Model and Standard

         

        CS-20

        CS-25

        CS-30

        XCS-20

        XCS-25

        XCS-30

        Appearance

        >Slight milky transparent to translucent liquid

        Na2O (wt%)

        ≤0.2%

        SiO2 (wt%)

        20±1%

        25±1%

        30±1%

        20±1%

        25±1%

        30±1%

        "Density (20°C,g/cm3)

        1.12-1.14

        1.15-1.17

        1.19-1.21

        1.12-1.14

        1.15-1.17

        1.19-1.21

        Impurity substance

        Fe

        ≤50ppm

        ≤30ppm

        Cl-

        ≤50ppm

        ≤20ppm

        SO42-

        ≤50ppm

        ≤20ppm

        Al2O3

        ≤100ppm

        ≤30ppm

        CO32-

        ≤100ppm

        ≤10ppm

        Other

        ≤100ppm

        ≤20ppm

        pH(20°C)

        8.0-9.5

        8.0-9.5

        Viscosity (20℃,mPas)

        ≤35

        Particle size (nm)

        8-15

        Stability

        6 months

        line
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