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    LUDOX® - Domestic Colloidal Silica

    Long lead times, inconsistent quality, a lack of technical and customer service.  These are all issues businesses can face when utilizing import raw materials.  In many cases import material may offer what looks to be a cost savings, but when you factor in all of the problems that can arise that savings quickly evaporates.  Grace, an expert in silica for over 100 years, produces LUDOX® in the USA and offers reliable supply and customer service for a material that is typically difficult to import.  In addition, LUDOX® offers quality and consistency that can't be matched by common import material.

    Stable Supply

    Consistent Quality

    Dedicated Service

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    LUDOX® is produced domestically and most grades are stocked by ChemPoint.  Eliminate long lead times and large minimum order quantities.
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    The manufacturing process for LUDOX® is tightly controlled to ensure consistency and purity from batch to batch.
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    ChemPoint has product experts standing by backed by the technical expertise that Grace provides.   Let us help guide you through your questions.

Find a Grade That Meets Your Specification


LUDOX® is available in many grades ranging in particle size, surface charge, counter ion, pH, and silica content.  With so many options it is likely there is a grade that matches the specifications and needs of your current manufacturing process.  See the table below to find a LUDOX® grade meets your current specifications.

Can't find your grade or not sure of the specifications?  Check out our Selector Guide to find a grade by functionality.

    Grade Surface Charge Particle Size (nm) Silica Content (%) Counter Ion pH
    SM
    Anionic
    7
    30
    Sodium 10
    SM-AS
    Anionic
    7
    25
    Ammonium 9.5
    HS-40
    Anionic
    12
    40
    Sodium 9.7
    HS-30
    Anionic
    12
    30
    Sodium 9.7
    AS-30
    Anionic
    12
    30
    Ammonium 9.4
    AM
    Anionic
    12
    30
    Sodium 9
    LS
    Anionic
    12
    30
    Sodium 8.2
    CL
    Cationic
    12
    30
    Chloride 4
    HSA
    Anionic
    12
    30
    None 4
    SK
    Anionic
    12
    25
    None 4
    DF
    Anionic
    12
    39
    Sodium 9.5
    TM-50
    Anionic
    22
    50
    Sodium 9
    TM-40
    Anionic
    22
    40
    Sodium 9
    AS-40
    Anionic
    22
    40
    Ammonium 9.2
    CL-X
    Anionic
    22
    45
    Sodium 9
    CL-P
    Cationic
    22
    40
    Chloride 4
    TMA
    Anionic
    22
    35
    None 7
    PW-50EC
    Anionic
    40
    50
    Sodium 10.2

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