3-Hydroxyphthalic Anhydride

    • Product Name: 3-Hydroxyphthalic Anhydride
    • Chemical Name (IUPAC): 3-hydroxy-1,3-isobenzofurandione
    • CAS No.: 518-75-2
    • Chemical Formula: C8H4O4
    • Form/Physical State: Powder
    • Factroy Site: No. 2, Guangze Avenue, Economic Development Zone, Qianjiang City, Hubei Province
    • Price Inquiry: sales2@liwei-chem.com
    • Manufacturer: Qianjiang Yongan Pharmaceutical Co., Ltd.
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    Specifications

    HS Code

    467166

    Chemical Name 3-Hydroxyphthalic Anhydride
    Synonyms 3-Hydroxy-1,3-isobenzofurandione
    Cas Number 518-29-6
    Molecular Formula C8H4O4
    Molecular Weight 164.12 g/mol
    Appearance White to off-white crystalline powder
    Melting Point 203-207°C
    Solubility Slightly soluble in water, soluble in organic solvents like acetone and ethanol
    Boiling Point Decomposes before boiling
    Density 1.6 g/cm³
    Storage Conditions Store in a cool, dry place, keep container tightly closed
    Purity Typically ≥98% (varies by supplier)

    As an accredited 3-Hydroxyphthalic Anhydride factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Application of 3-Hydroxyphthalic Anhydride

    Purity 99%: 3-Hydroxyphthalic Anhydride with purity 99% is used in high-performance polyester resin manufacturing, where it ensures superior polymer chain integrity and enhanced mechanical strength.

    Melting point 200°C: 3-Hydroxyphthalic Anhydride with a melting point of 200°C is used in advanced epoxy curing systems, where high thermal stability in the cured network is achieved.

    Molecular weight 180.13 g/mol: 3-Hydroxyphthalic Anhydride at a molecular weight of 180.13 g/mol is used in pharmaceutical intermediate synthesis, where accurate formulation and predictable reaction pathways are enabled.

    Particle size <10 microns: 3-Hydroxyphthalic Anhydride with particle size less than 10 microns is used in specialty coating formulations, where it promotes uniform dispersion and improved film homogeneity.

    Stability temperature up to 150°C: 3-Hydroxyphthalic Anhydride stable up to 150°C is used in high-temperature adhesive production, where prolonged thermal resistance and consistent bonding strength are maintained.

    Assay ≥98%: 3-Hydroxyphthalic Anhydride assay ≥98% is used in dye and pigment synthesis, where high purity ensures brighter color yield and reduced impurities in end products.

    Packing & Storage
    Packing A white, sealed 500g plastic bottle with a screw cap; features hazard symbols, product name "3-Hydroxyphthalic Anhydride", and batch details.
    Container Loading (20′ FCL) Container Loading (20′ FCL): 3-Hydroxyphthalic Anhydride packed in 25 kg bags, 12 metric tons per 20′ FCL, palletized for export.
    Shipping 3-Hydroxyphthalic Anhydride should be shipped in tightly sealed containers to prevent moisture absorption and contamination. Store and transport in a cool, dry, and well-ventilated environment, away from incompatible substances such as strong acids and bases. Clearly label as a chemical substance and adhere to relevant regulatory and safety guidelines during shipping.
    Storage 3-Hydroxyphthalic Anhydride should be stored in a cool, dry, and well-ventilated area, away from moisture, heat, and incompatible substances such as bases and strong oxidizers. Keep the container tightly closed and clearly labeled. Protect from physical damage, and use corrosion-resistant shelving. Personal protective equipment should be worn when handling to prevent inhalation or skin contact.
    Shelf Life 3-Hydroxyphthalic Anhydride typically has a shelf life of 2-3 years if stored in a cool, dry, tightly sealed container.
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