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    Related: Zinc Salt Zinc Oxide Zinc Ricinoleate
    • Basic Zinc Carbonate CAS 5263-02-5

    Basic Zinc Carbonate CAS 5263-02-5

    Basic Zinc Carbonate, also called zinc carbonate hydroxide or zinc subcarbonate, CAS 5263-02-5, is a fine white powder supplied in industrial, feed or rubber grade. Confirm the required grade and specification, then request a quotation with COA/TDS/SDS for bulk supply.

    • CAS: 5263-02-5
    • Synonyms: Zinc carbonate hydroxide, Zinc hydroxycarbonate, Zinc subcarbonate, Basic zinc carbonate, Zn5(CO3)2(OH)6
    • Einecs: 226-076-7
    • Molecular Formula: Zn₅(CO₃)₂(OH)₆
    • Grade: Industrial Grade / Feed Grade / Rubber Grade
    • Package: 25kg/bag (Plastic woven bag with PE liner) or 500kg/1000kg Jumbo Bag.
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    Product Description

    Basic Zinc Carbonate CAS 5263-02-5 is a zinc carbonate hydroxide, also called zinc subcarbonate or zinc hydroxycarbonate, with molecular formula Zn5(CO3)2(OH)6 and EINECS number 226-076-7.

    Synonyms: Zinc carbonate hydroxide; Zinc hydroxycarbonate; Zinc subcarbonate; Basic zinc carbonate; Zn5(CO3)2(OH)6.

    CAS: 5263-02-5.

    It has the molecular formula Zn5(CO3)2(OH)6 and is supplied as a fine white powder.

    A typical specification includes zinc content of at least 57.0% for industrial grade and at least 57.5% for high-purity grade.

    Loss on ignition is 25.0–28.0%, whiteness at least 92.0% industrial and 95.0% high purity, and moisture at most 2.5% and 2.0%.

    Lead is at most 0.005% industrial and 0.002% high purity, cadmium at most 0.002% and 0.001%, and water-soluble matter at most 1.0% and 0.5%.

    It is a primary vulcanization activator for transparent, translucent and light-colored rubber products.

    In latex products such as gloves and tubing, it acts as a cross-linking aid with good dispersibility and no white spots.

    Oilfield-grade material reacts with hydrogen sulfide to form insoluble zinc sulfide, reducing H2S levels in drilling fluids.

    Feed-grade material is used as a trace-element zinc supplement for livestock and veterinary feed additives.

    It is used in skin-protectant powders and calamine lotions for its mild antiseptic and soothing properties.

    It is also used in rayon fiber production and as a raw material for other zinc salts.

    The powder reacts vigorously with acids, so it must be stored away from acidic chemicals.

    Confirm zinc content, appearance, loss on ignition, whiteness, moisture, lead, cadmium and water-soluble matter limits.

    Store in a cool, dry, ventilated area with the inner PE bag sealed to prevent moisture pickup and caking.

    Confirm packaging with the requested quantity and destination requirements.

    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 grade and specification, quantity, packaging, destination and document needs.

    FAQ - Technical & Supply Chain

    • Q:

      What is Basic Zinc Carbonate CAS 5263-02-5?

      A: Basic Zinc Carbonate CAS 5263-02-5 is a zinc carbonate hydroxide with EINECS 226-076-7 and molecular formula Zn5(CO3)2(OH)6. It is also called zinc subcarbonate or zinc hydroxycarbonate and is supplied as a fine white powder.
    • Q:

      How is Basic Zinc Carbonate different from neutral zinc carbonate?

      A: Basic Zinc Carbonate CAS 5263-02-5 contains both carbonate and hydroxide groups, while neutral zinc carbonate is CAS 3486-35-9 with the simpler ZnCO3 structure. The basic form has different zinc content, loss on ignition, and industrial behavior, so the CAS number must be matched to the actual grade.
    • Q:

      Why is Basic Zinc Carbonate used as a rubber vulcanization activator?

      A: Its fine particle size and good dispersibility help activate sulfur vulcanization while avoiding white spots in transparent, translucent, and light-colored rubber. It is commonly used in latex products such as gloves and tubing as a cross-linking aid.
    • Q:

      How does Basic Zinc Carbonate work as an oilfield hydrogen sulfide scavenger?

      A: In drilling muds and fluids, basic zinc carbonate reacts with hydrogen sulfide and converts it to insoluble zinc sulfide. This reduces hazardous H2S levels and helps protect personnel and equipment in oil and gas operations.
    • Q:

      Why do feed and pharmaceutical grades control zinc content, LOI, lead, and cadmium?

      A: Zinc content and loss on ignition identify the basic carbonate composition, while low lead and cadmium limits are necessary for animal nutrition, veterinary feed additives, and skin-protectant applications. The listed high-purity grade uses stricter Pb, Cd, moisture, and water-soluble matter limits.

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