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    • Polyurethane (PU) CAS 9009-54-5
    • Polyurethane (PU) CAS 9009-54-5

    Polyurethane (PU) CAS 9009-54-5

    Polyurethane, commonly abbreviated PU, CAS 9009-54-5, is a broad class of synthetic polymers supplied as resin, foam, elastomer or reactive systems for insulation, coatings and adhesives. Confirm the required grade and specification, then request a quotation with COA/TDS/SDS for bulk supply.

    • CAS: 9009-54-5
    • Synonyms: PU resin, Cellular polyurethane, Polyurethane foam, Polyurethane elastomer
    • Einecs: 210-898-8
    • Molecular Formula: (C₃H₈N₂O)ₙ
    • Grade: Industrial Grade / Technical Grade
    • Package: 200kg/iron drum, 1000kg/IBC drum, or bulk ISO tank
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    Product Description

    Polyurethane (PU) CAS 9009-54-5 is a class of synthetic polymers formed by the reaction of diisocyanates with polyols, with the repeat-unit formula (C₃H₈N₂O)ₙ and EINECS 210-898-8.

    Synonyms: PU resin; Cellular polyurethane; Polyurethane foam; Polyurethane elastomer.

    CAS: 9009-54-5.

    Molecular formula: (C₃H₈N₂O)ₙ.

    It is supplied in forms such as resin, foam, elastomer or reactive system depending on the grade.

    It is used in thermal insulation, rigid and flexible foam, coatings, adhesives, sealants, synthetic leather, textiles, elastomers and composite applications.

    Polyether-based grades generally provide better hydrolysis resistance and flexibility in wet environments.

    Polyester-based grades tend to offer higher oil resistance, tensile strength and abrasion resistance.

    The technical grade can be formulated as a 100% solids or high-solids reactive system for specific processing conditions.

    Typical liquid prepolymer values include solids content of about 99.0% or higher, density about 1.05-1.20 g/cm³ and viscosity about 1000-3500 mPa·s.

    The free NCO content is typically about 3.5-6.5% and can be customized.

    Key properties such as molecular weight, solids content, viscosity, hardness, NCO content, gel time and density are grade-specific.

    Store strictly in tightly sealed, moisture-proof containers in a dry, well-ventilated area at 15-30 °C.

    Protect from moisture and contamination, and keep containers closed when not in use.

    Confirm appearance, solids content, viscosity, NCO content, density, moisture, hardness and grade as required.

    Use suitable eye and skin protection during handling, and wash skin contact with soap and water.

    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 application, required grade, quantity, packaging, destination and document needs.

    FAQ - Technical & Supply Chain

    • Q:

      What is Polyurethane CAS 9009-54-5?

      A: Polyurethane is a broad class of synthetic polymers formed by the reaction of diisocyanates with polyols. CAS 9009-54-5 is a general polymer/resin identifier, often represented by the repeat formula (C3H8N2O)n, and is supplied in forms such as resin, foam, elastomer, or reactive system depending on the grade.
    • Q:

      What are the main industrial uses of Polyurethane CAS 9009-54-5?

      A: Polyurethane is used in thermal insulation, rigid and flexible foam, coatings, adhesives, sealants, synthetic leather, textiles, elastomers, and composite or construction applications. The technical grade can be formulated as a 100% solids or high-solids reactive system for specific processing conditions.
    • Q:

      How do polyether and polyester polyurethane grades differ?

      A: Polyether-based grades generally provide better hydrolysis resistance and flexibility in wet environments, while polyester-based grades tend to offer higher oil resistance, tensile strength, and abrasion resistance. Selecting between them depends on the mechanical, chemical, and environmental requirements of the final product.
    • Q:

      Why do Polyurethane specifications vary from one supplier or grade to another?

      A: Because CAS 9009-54-5 covers a polymer family rather than one fixed small molecule, important properties such as molecular weight, solids content, viscosity, hardness, NCO content, gel time, and density are grade-specific. Buyers should compare the selected grade against the intended processing method and end-use performance rather than treating all PU products as interchangeable.

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