Vinati Organics Ltd is the leading producer and supplier of 2-acrylamido-2-methylpropane sulphonic acid (CAS No. 15214-89-8) in India.


ATBS/AMPS is supplied in a granule or powder form. Depending on the polymerization molecular weight sought and the performance characteristics desired, ATBS/AMPS is offered in 3 grades: 2401, 2404 and 2406.


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    An overview of AMPS Monomer:

    Acrylamide tertiary-butyl sulfonic acid (CAS 15214-89-8) is a very unique versatile vinyl compound that has a sulphonic group. Its uses are widely found in the production of polymers, textiles, flocculants, dispersants, scale control agents and well-additives.  

    AMPS monomer is a reactive, hydrophilic, sulphonic acid acrylic monomer used to alter the chemical properties of a large variety of anionic polymers. Acrylamide tertiary-butyl sulfonic acid is prepared by the reaction of acrylonitrile and isobutylene in the presence of sulfuric acid and water.


    The ATBS monomer allows the manufacturing of high-quality polymers for application in a wide range of consumer and industrial products. The AMPS monomer at Vinati Organics Ltd is organic, high in productivity and performance and available in both granules and liquid form. For ease of handling, AMPS is also offers in a 50% sodium salt solution called NaAMPS.


    Chemical properties of 2-acrylamido-2-methyl propane sulfonic acid are:

    Molecular formula: C7H13NO4S
    Purity: >= 99.0%
    Acid number:  265-275 mgKOH/g
    Iron <=10 mg/kg
    Water <=0.3%
    CAS Number: 15214-89-8

    Synonyms:  2-Acrylamido-2-Methyl Propane Sulfonic Acid, 2-Acrylamido-2-Methylpropanesulfonic Acid, 2-Acrylamido-2-Methyl-1-Propane Sulfonic Acid and 2-Acryloylamino-2-Methylpropane-1-Sulfonic Acid, Acrylamide tertiary-butyl sulfonic acid. IUPAC name is 2-acrylamido-2-methyl  propane sulfonic acid


    Uses and Applications:

    • Water Treatment Chemicals

    Dispersants (Low Molecular Weight): AMPS co-polymers and terpolymers are used in Cooling towers and Boilers to inhibit Calcium, Magnesium and Silica scale.
    Flocculants (High Molecular Weight): AMPS co-polymers are used to precipitate solids in industrial and mining effluents.

    • Oilfield and Mining Chemicals

    Polymers containing 2-acrylamido 2-methylpropane sulfonic acid provide excellent high temperature stability, lubricity and friction reduction in drilling and cementing fluids.

    • Construction Chemicals

    AMPS based polymers improve dispersibility, lubricity and can be used as excellent flow control auxiliaries for building materials.

    • Textile Auxiliaries

    Textile Sizing agents, Thickeners, Dispersants and Non-Woven Emulsion Binders

    • Emulsions for Paints and Paper Coatings

    Polymers containing AMPS / ATBS improve scrub resistance, dispersant performance and reduce grit formation.

    • Adhesives

    ATBS based polymers improve tack and peal strength in Pressure Sensitive Adhesive formulations. It offers adhesive strength, thermal and mechanical properties with superior rheology.

    • Hydrogels and Super Absorbents

    AMPS based polymers impart water-absorbing capacity, electrical conductivity, slipperiness and lubricity. Hence, it is used in medical applications as well as diapers, lotions and other personal care products.

    • Acrylic Fibre

    Used as a co-monomer in acrylic fibre industries to enhance dye receptibility.

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