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    Related: Personal Care Active Piroctone Olamine Triclosan
    • Zinc Pyrithione (ZPT) CAS 13463-41-7

    Zinc Pyrithione (ZPT) CAS 13463-41-7

    Zinc Pyrithione (ZPT), also called pyrithione zinc, CAS 13463-41-7, is an antimicrobial and antifungal active supplied for anti-dandruff shampoo and scalp-care formulations. Confirm the required grade and particle size, then request a quotation with COA/TDS/SDS for bulk supply.

    • CAS: 13463-41-7
    • Synonyms: Pyrithione Zinc; ZPT
    • Einecs: 236-671-3
    • Molecular Formula: C10H8N2O2S2Zn
    • Grade: Formulation / cosmetic raw material grade
    • Package: Standard export packaging
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    Product Description

    Zinc Pyrithione (ZPT) CAS 13463-41-7 is an antimicrobial and antifungal active with EINECS 236-671-3 and molecular formula C10H8N2O2S2Zn.

    Synonyms: Pyrithione zinc; ZPT.

    CAS: 13463-41-7.

    Molecular formula: C10H8N2O2S2Zn.

    It is supplied as a white to off-white powder.

    It is also called pyrithione zinc or ZPT.

    It is mainly used as an anti-dandruff active in rinse-off shampoo and scalp-care systems.

    It works through activity against Malassezia and other microorganisms, including disruption of membrane transport.

    It has very low water solubility, so controlled particle size helps dispersibility, suspension stability, and scalp deposition in surfactant systems.

    Grades are commonly specified by D50, D90, or D100 particle size values.

    Confirm assay, appearance, particle size distribution, moisture, heavy metals, and related impurities.

    Confirm regulatory concentration limits for the intended product category and destination market.

    Store in tightly closed containers in a cool, dry, well-ventilated area away from heat, moisture, and strong oxidizers.

    Use appropriate PPE and controlled dispensing to limit dust exposure.

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

    Every batch is checked for assay, appearance, particle size distribution, moisture, heavy metals, and related impurities, with COA/TDS/SDS supplied per grade.

    Confirm assay, particle size distribution, 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 Zinc Pyrithione CAS 13463-41-7?

      A: Zinc Pyrithione, also called pyrithione zinc or ZPT, is an antimicrobial and antifungal active supplied as a white to off-white powder. It has CAS 13463-41-7, EC 236-671-3, molecular formula C10H8N2O2S2Zn, and molecular weight about 317.70 g/mol.
    • Q:

      How does Zinc Pyrithione work in anti-dandruff shampoo?

      A: ZPT provides anti-dandruff performance through its activity against Malassezia and other microorganisms, including disruption of membrane transport. It is normally used in rinse-off shampoo and scalp-care systems rather than as a finished consumer product.
    • Q:

      Why is particle size important for Zinc Pyrithione?

      A: Zinc Pyrithione has very low water solubility, so controlled particle size helps dispersibility, suspension stability, and scalp deposition in surfactant systems. Grades are commonly specified by D50, D90, or D100 values, and the particle size should be matched to the target shampoo formulation.
    • Q:

      What is the difference between Zinc Pyrithione and Piroctone Olamine?

      A: Both are anti-dandruff actives, but they have different mechanisms, regulatory profiles, and formulation flexibility. Zinc Pyrithione has a long use history and is often used in rinse-off systems, while piroctone olamine may be preferred for leave-on or other formulations where regulation and compatibility differ.
    • Q:

      What regulatory concentration limits apply to Zinc Pyrithione?

      A: Zinc Pyrithione is restricted in cosmetics and classified as a CMR substance in the EU. Current EU limits include up to 1% in rinse-off hair products, 0.5% in other rinse-off products, and 0.1% in leave-on hair products, but each formulation and destination market should be confirmed against the latest regulation.

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