Language

Current Language
    Change Language
    Chemical products
    Related: Water Treatment Chemical HEDP Diphosphonic Acid ATMP
    • 2-Phosphonobutane-1,2,4-Tricarboxylic Acid (PBTC) CAS 37971-36-1

    2-Phosphonobutane-1,2,4-Tricarboxylic Acid (PBTC) CAS 37971-36-1

    2-Phosphonobutane-1,2,4-tricarboxylic acid (PBTC), CAS 37971-36-1, a low-phosphorus organophosphonic acid supplied as an aqueous solution, is positioned for scale inhibition, chelation, and dispersion in water treatment. Confirm the active acid content, then request a quotation with COA/TDS/SDS for bulk supply.

    • CAS: 37971-36-1
    • Synonyms: PBTC；2-Phosphonobutane-1,2,4-tricarboxylic acid
    • Einecs: 253-733-5
    • Molecular Formula: C7H11O9P
    • Grade: Industrial grade
    • Package: Standard export packaging
    Request a quote
    Share:

    Product Description

    2-Phosphonobutane-1,2,4-tricarboxylic acid (PBTC) CAS 37971-36-1 is a low-phosphorus organophosphonic acid with EC 253-733-5 and molecular formula C7H11O9P.

    Synonyms: PBTC; 2-Phosphonobutane-1,2,4-tricarboxylic acid.

    CAS: 37971-36-1.

    Molecular formula: C7H11O9P.

    It is commonly supplied as a colorless to light yellow aqueous solution at about 50% active acid content.

    It contains both phosphonic acid and carboxylic acid groups.

    It is positioned for scale inhibition, chelation, and dispersion in water treatment.

    It is mainly used in circulating cooling water, boiler water, and industrial water treatment formulations.

    It has high calcium tolerance and can help control calcium carbonate and calcium phosphate scale.

    It is often used together with zinc salts and copolymers in formulated treatment programs.

    Confirm active acid content, density, pH, appearance, and related impurities for the chosen grade.

    Check compatibility with zinc salts, copolymers, and the target water chemistry.

    Store in tightly closed containers in a cool, dry, well-ventilated area away from alkalis and incompatible materials.

    Use appropriate PPE and prevent spills or contamination.

    Confirm packaging suitable for the liquid form and order quantity, and follow the current SDS.

    Every batch is checked for active acid content, density, pH, appearance, and related impurities, with COA/TDS/SDS supplied per grade.

    Confirm active acid content, packaging, and grade as required.

    The page is an RFQ entry point and does not state stock, price, MOQ, or fixed lead time.

    For an RFQ, state the intended application, required grade, quantity, packaging, destination, and document needs.

    FAQ - Technical & Supply Chain

    • Q:

      What is 2-Phosphonobutane-1,2,4-Tricarboxylic Acid PBTC CAS 37971-36-1?

      A: PBTC is a low-phosphorus organophosphonic acid identified by CAS 37971-36-1, EC 253-733-5, and molecular formula C7H11O9P. It contains both phosphonic acid and carboxylic acid groups, which give it scale-inhibition, chelation, and dispersion behavior in water treatment.
    • Q:

      Where is PBTC mainly used?

      A: PBTC is mainly used as a scale and corrosion inhibitor in circulating cooling water, boiler water, and industrial water treatment formulations. It is also selected for cleaning and scale-control applications in industrial equipment.
    • Q:

      What form and specifications should be checked for PBTC?

      A: Commercial PBTC is commonly supplied as a colorless to light yellow aqueous solution with around 50% active acid content. Check the actual active content, density of about 1.25-1.30 g/cm3, and the acidic pH of a 1% solution, because these values depend on the selected liquid grade.
    • Q:

      Why is PBTC suitable for high-hardness water systems?

      A: PBTC has high calcium tolerance and can help control calcium carbonate and calcium phosphate scale under high-hardness conditions. It is often used together with zinc salts and copolymers in formulated treatment programs.
    • Q:

      How does PBTC compare with HEDP, ATMP, and HPAA?

      A: PBTC, HEDP, ATMP, and HPAA are all organophosphonate water-treatment chemicals, but they have different structures and performance profiles. PBTC is a low-phosphorus product combining phosphonic and carboxylic acid groups, so dosing and formulation should be based on the actual active acid content.

    Ordering & Documentation

    Key information for document requests, quotations, and supply planning.

    Documents

    Tell us which documents your procurement team needs. Before an order, we will check whether the quoted source can provide them for the offered lot.

    Quotation

    Send the CAS number, grade, quantity, packing preference and destination.

    Sample & Supply

    Ask whether samples, trial quantities or repeat orders are possible. We will check each request against the sourced product and current offer.

    Storage & Shipping

    Product-specific conditions are confirmed before order.

    Contact Form

    Use our contact form to send us your questions, suggestions or comments. We will respond as soon as possible.
    For a quotation, please include the product name or CAS number, quantity, grade or application, and destination country or port. Tell us if you need a sample, COA, TDS or SDS.

    Product Categories

    Related Products