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    Related: Anionic Surfactant SDBS SLS
    • Linear Alkyl Benzene Sulphonic Acid CAS 27176-87-0

    Linear Alkyl Benzene Sulphonic Acid CAS 27176-87-0

    Linear Alkyl Benzene Sulphonic Acid (LABSA), CAS 27176-87-0, is a high-activity anionic surfactant supplied as a key raw material for household and industrial detergents. Confirm active matter, then request a quotation with COA/TDS/SDS for bulk supply.

    • CAS: 27176-87-0
    • Synonyms: LABSA, Dodecylbenzenesulfonic acid, DDBSA, Alkylbenzene sulfonic acid, LABS acid
    • Einecs: 248-289-4
    • Molecular Formula: C₁₈H₃₀O₃S
    • Grade: Detergent Grade
    • Package: 215 kg net steel drum or 1,050 kg IBC tote; 17.2–18 MT/20'FCL (drums), 21 MT/20'FCL (IBCs)
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    Product Description

    Linear Alkyl Benzene Sulphonic Acid, CAS 27176-87-0, also known as LABSA or dodecylbenzenesulfonic acid (DDBSA), is an anionic surfactant intermediate; the EC/EINECS number is 248-289-4.

    Synonyms: LABSA; dodecylbenzenesulfonic acid; DDBSA; alkylbenzene sulfonic acid; LABS acid.

    CAS: 27176-87-0.

    Molecular formula: C₁₈H₃₀O₃S.

    Average molecular weight: about 320–323.

    EC number: 248-289-4.

    It is a brown to dark-brown viscous liquid at 25 °C, fully miscible with water and forming a clear solution.

    Active matter (as LABSA) is ≥96.0%; free oil ≤2.0% and free inorganic acid (as H₂SO₄) ≤1.5%.

    Water content is ≤1.0%; density at 25 °C is about 1.05–1.08 g/mL; a 1% aqueous solution is strongly acidic (pH below 2).

    It is used in household and industrial detergents, dishwashing liquids, laundry powders and liquids and hard-surface cleaners.

    It is used in textile processing, leather auxiliaries, emulsion polymerization and agrochemical emulsifiers.

    Neutralization with an alkali such as sodium hydroxide or potassium hydroxide forms the alkylbenzene sulfonate salt.

    The sulfonate salt provides the final detergency and foaming performance in cleaning formulations.

    Confirm active matter, free oil, free sulfuric acid, color, water content and density against the current batch analysis.

    Store in a cool, dry, ventilated area in corrosion-resistant containers such as HDPE or stainless steel, away from strong oxidizers and ignition sources.

    Confirm packaging with the requested quantity and destination requirements.

    Document requirements should be confirmed from the current specification, SDS, COA or other product-specific files.

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

    For an RFQ, state the intended use, required specification, active matter, quantity, packaging, destination and document needs.

    FAQ - Technical & Supply Chain

    • Q:

      What is Linear Alkyl Benzene Sulphonic Acid CAS 27176-87-0?

      A: LABSA is an anionic surfactant intermediate produced by sulfonation of linear alkylbenzene. It is supplied as a viscous brown liquid and is one of the most widely used active materials for making laundry, dishwashing and industrial detergents.
    • Q:

      Why must LABSA be neutralized before use in detergent formulations?

      A: LABSA is an acidic intermediate. It is normally neutralized with an alkali such as sodium hydroxide, potassium hydroxide or triethanolamine to form the corresponding alkylbenzene sulfonate salt, which provides the final detergency and foaming performance.
    • Q:

      What are the main applications?

      A: It is used in household and industrial detergents, dishwashing liquids, laundry powders and liquids, hard-surface cleaners, textile processing, leather auxiliaries, emulsion polymerization and agrochemical emulsifiers.
    • Q:

      Which grade and packaging does this listing cover?

      A: The listing is detergent grade and is available in 215 kg net steel drums or 1,050 kg IBC totes. Typical container loading is 17.2-18 MT per 20-foot FCL for drums and 21 MT for IBCs.
    • Q:

      What specifications should be checked before ordering?

      A: Confirm active matter, free oil, free sulfuric acid, color, water content and density against the current batch analysis. Also request the technical data and safety information and state the required packaging and delivery form.
    • Q:

      How should LABSA be stored and handled?

      A: Store in a cool, dry, ventilated area in corrosion-resistant containers such as HDPE or stainless steel, away from strong oxidizers and sources of ignition. Avoid freezing and use chemical-resistant PPE, eye protection and spill containment, and follow the safety information.

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