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    HomeProductsBasic & Fine ChemicalsChemical IntermediatesMaleic Anhydride CAS 108-31-6
    • Maleic Anhydride CAS 108-31-6
    • Maleic Anhydride CAS 108-31-6

    Maleic Anhydride CAS 108-31-6

    Maleic Anhydride is an industrial chemical intermediate primarily used in the manufacture of unsaturated polyester resins, alkyd resins, and various chemical derivatives. It plays a key role in polymer modification, coatings, and plastic additive systems where reactive anhydride functionality is required.

    In commercial supply, Maleic Anhydride is typically available in solid briquette or flake form, as well as in molten form for bulk handling. Supply arrangements include standard export packaging, bulk logistics support, and documentation suitable for industrial procurement and downstream processing.

    • CAS: 108-31-6
    • Synonyms: 2,5-Furandione; Cis-Butenedioic Anhydride
    • Einecs: 203-571-6
    • Molecular Formula: C4H2O3
    • Grade: Industrial Grade
    • Package: Available in solid or molten form; packaged in bags, drums, or bulk containers depending on supply form and logistics requirements.
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    Product Description

    1 Physicochemical Properties
    2 Typical Applications
    3 Packaging
    4 Storage
    5 FAQ

    Physicochemical Properties

    PropertyValue
    AppearanceWhite solid (flakes, briquettes) or molten liquid
    OdorPungent, irritating odor
    Melting PointApprox. 52 – 54 °C
    Boiling PointApprox. 202 °C
    DensityApprox. 1.48 g/cm³
    SolubilityReacts with water to form maleic acid
    Vapor PressureLow at ambient temperature
    Flash PointApprox. 103 °C

    Typical Applications

    • Production of unsaturated polyester resins (UPR)
    • Intermediate for alkyd resins and coating binders
    • Raw material for chemical synthesis (e.g., additives, intermediates, modifiers)
    • Used in polymer modification and plastic additive systems
    • Intermediate in the production of agricultural and specialty chemicals

    Specific end uses should be evaluated according to local regulatory and industrial requirements.

    Packaging

    Maleic Anhydride is supplied in both solid and molten forms. Solid material is typically packed in sealed bags or lined containers to protect against moisture and contamination. Molten Maleic Anhydride is transported in heated tank containers designed to maintain the product above its melting point during transit.

    Packaging and logistics arrangements are selected based on order volume, handling infrastructure, and downstream processing requirements.

    Storage

    Store in a cool, dry, and well-ventilated area. Keep containers tightly sealed to prevent moisture ingress, as the product reacts with water. Avoid exposure to heat sources and direct sunlight.

    For molten material, maintain appropriate temperature control during storage and handling to prevent solidification.

    FAQ

    What should be considered during storage?
    The product should be kept dry and sealed, and protected from moisture and excessive heat.

    In what form is Maleic Anhydride supplied?
    It is available as solid flakes or briquettes, and also as molten liquid for bulk industrial use.

    What are the main industries using this product?
    It is widely used in resin manufacturing, coatings, plastics, and chemical synthesis industries.

    Does the product react with water?
    Yes, it reacts with water to form maleic acid, so moisture control is important during storage and handling.

    Is bulk supply available?
    Yes, bulk supply including molten transport and large-volume solid packaging can be arranged.

    Are technical documents provided?
    Standard documentation such as COA, TDS, and SDS is available to support industrial procurement.

    FAQ - Technical & Supply Chain

    Documents

    Documents and Product Support

    For product review and sourcing evaluation, supporting documents can be coordinated according to the product type, inquiry stage, and order requirements.

    • COA for batch-based quality reference
    • TDS for key physical and chemical information
    • SDS / MSDS for handling, storage, and safety reference
    • Packing information for sample, trial, and bulk orders
    • Technical communication based on application and specification requirements
    Quotation

    Information to Confirm Before Quotation

    Clear sourcing information helps reduce specification mismatch and allows a more accurate quotation before sample or bulk order discussion.

    • Product name and CAS number
    • Application or intended end use
    • Required purity, grade, or specification
    • Sample quantity, trial order, or bulk demand
    • Preferred packing form or net weight
    • Destination country or port
    • Required documents or compliance expectations
    Storage & Handling

    Packaging, Storage, and Handling Notes

    Packaging form, storage conditions, shelf life, and shipment arrangements should be confirmed according to the product characteristics, package size, and destination requirements.

    Before order confirmation, buyers are advised to review the corresponding product documents and confirm whether any special storage, labeling, or handling requirements apply.

    Supply Support

    Sample, Bulk Order and Repeat Supply Support

    Support can be arranged for sample discussion, bulk supply planning, packaging confirmation, and routine sourcing communication based on the actual product and order requirements.

    For repeat-use formulations or long-term procurement plans, buyers may discuss specification consistency, packaging preferences, delivery expectations, and document coordination in advance.

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    Product Categories

    Tags:

    Organic Synthesis Intermediate Polymer Modifier Resin Intermediate Unsaturated Anhydride

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