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    • Rubber Accelerator MBTS (DM) CAS 120-78-5

    Rubber Accelerator MBTS (DM) CAS 120-78-5

    Rubber Accelerator MBTS, commonly abbreviated DM, CAS 120-78-5, is a thiazole rubber accelerator supplied as powder or granules for sulphur-cured rubber compounds. Confirm the required grade, then request a quotation with COA/TDS/SDS for bulk supply.

    • CAS: 120-78-5
    • Synonyms: MBTS; DM; 2,2′-Dithiobis(benzothiazole); Dibenzothiazole disulfide
    • Einecs: 204-424-9
    • Molecular Formula: C14H8N2S4
    • Grade: Industrial rubber-accelerator grade
    • Package: 25 kg PE-lined kraft or woven bags
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    Product Description

    Rubber Accelerator MBTS (DM) CAS 120-78-5 is 2,2′-dithiobis(benzothiazole), with EC 204-424-9 and molecular formula C14H8N2S4.

    Synonyms: MBTS; DM; 2,2′-Dithiobis(benzothiazole); Dibenzothiazole disulfide.

    CAS: 120-78-5.

    Molecular formula: C14H8N2S4.

    It is supplied as a white to light-yellow powder or granules.

    It is positioned as a thiazole accelerator for sulphur-vulcanised natural and synthetic rubber compounds.

    It provides a moderately fast cure with a comparatively flat cure profile and better scorch safety than MBT.

    It is used in tires, tubes and technical rubber goods based on natural rubber, SBR, NBR, BR and other compatible synthetic rubbers.

    It is also used in belts, hoses, footwear, rubberised fabrics and moulded goods.

    MBTS and DM are common names for the same chemical, CAS 120-78-5.

    It is essentially insoluble in water and has a density around 1.45-1.54 g/cm3.

    Commercial grades commonly specify an initial melting point of at least 160-170 C.

    Confirm the selected physical form, initial melting point, loss on drying, ash, sieve residue and free-MBT limit.

    Store in tightly closed containers in a cool, dry, well-ventilated area, away from direct sunlight.

    Use suitable PPE when handling the material to prevent dust or granule exposure and skin or eye contact.

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

    Confirm grade, packaging, and specification 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 Rubber Accelerator MBTS DM CAS 120-78-5?

      A: Rubber Accelerator MBTS, also called DM, is 2,2'-dithiobis(benzothiazole). It is a thiazole accelerator used in sulphur-vulcanised natural-rubber and synthetic-rubber compounds, giving a moderately fast and comparatively flat cure profile.
    • Q:

      Are MBTS and DM the same rubber accelerator?

      A: Yes. MBTS and DM are common names for 2,2'-dithiobis(benzothiazole), CAS 120-78-5. Powder, oiled-powder and granule forms have the same chemical identity but can differ in handling and test limits.
    • Q:

      How does MBTS compare with the sulfenamide accelerator CBS?

      A: MBTS is a thiazole accelerator, while CBS is a delayed-action sulfenamide accelerator. MBTS generally provides a flatter cure and better scorch safety than MBT but can be slower than CBS, so the two should not be substituted without checking the target cure profile and processing window.
    • Q:

      Which rubber types is MBTS used in?

      A: MBTS is used in tires, tubes and technical rubber goods based on natural rubber, SBR, NBR, BR and other compatible synthetic rubbers. It is also used in belts, hoses, footwear, rubberised fabrics and moulded goods, and in polychloroprene formulations where it may act as a plasticiser or retarder.
    • Q:

      Which MBTS specifications should be checked before use?

      A: Confirm the selected physical form, initial melting point, loss on drying, ash and sieve residue. Commercial grades commonly specify an initial melting point of at least 160-170 deg C, with free-MBT and oil content also checked where the grade or application requires it.
    • Q:

      Is Rubber Accelerator MBTS soluble in water?

      A: No, MBTS is essentially insoluble in water and has a density around 1.45-1.54 g/cm3. It is only slightly soluble in benzene, chloroform and ethanol, and is not soluble in gasoline or ethyl acetate.

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