Language

Current Language
    Change Language
    HomeProductsSpecialty ChemicalsPlastic AdditivesDioctyl Phthalate DOP CAS 117-81-7
    • Dioctyl Phthalate DOP CAS 117-81-7

    Dioctyl Phthalate DOP CAS 117-81-7

    Dioctyl Phthalate (CAS 117-81-7), universally abbreviated as DOP or chemically known as Di(2-ethylhexyl) phthalate (DEHP), is the most widely used general-purpose plasticizer in the global polymer industry. Chemically identified as the diester of phthalic acid and 2-ethylhexanol, this clear, colorless, and viscous oily liquid functions to impart flexibility, softness, and processability to rigid polyvinyl chloride (PVC) resins. Considered the industry standard for cost-performance balance, it is extensively integrated into the manufacturing of soft PVC products, including wire and cable insulation, artificial leather, flexible hoses, footwear soles, and waterproof membranes. Its excellent compatibility with PVC, low volatility, and good electrical insulating properties make it the primary choice for industrial soft plastic applications where phthalate restrictions do not apply. We ensure bulk supply capabilities for this material, providing access to competitive factory pricing and customized specifications to meet specific color (APHA) and purity standards (typically >99.5% Industrial Grade). Full technical documentation, including MSDS, TDS, COA, is available to support compliance and safety protocols.

    • CAS: 117-81-7
    • Synonyms: DOP, DEHP, Di(2-ethylhexyl) phthalate, Bis(2-ethylhexyl) phthalate, Di-sec-octyl phthalate
    • Einecs: 204-211-0
    • Molecular Formula: C₂₄H₃₈O₄
    • Grade: Industrial Grade (Plasticizer)
    • Package: 200 kg iron drum / 1000 kg IBC (customizable)
    Request a quote
    Share:

    Product Description

    DOP is a colorless to pale-yellow oily liquid with low volatility and good thermal stability. It provides excellent plasticizing efficiency, improving flexibility, elongation, and low-temperature performance of polymer materials. Due to its balanced properties and cost efficiency, it has long been used as a standard plasticizer in industrial formulations.

    1 Physicochemical Properties
    2 Applications
    3 Storage Conditions
    4 Safety Precautions

    Physicochemical Properties

    Typical values based on common Chinese factory COA. Final specifications subject to batch analysis.

    ItemTypical Value
    AppearanceColorless to pale-yellow transparent oily liquid
    CAS No.117-81-7
    EC No.204-211-0
    Molecular formulaC₂₄H₃₈O₄
    Molecular weight390.56 g/mol
    Density (20°C)0.982–0.986 g/cm³
    Refractive index (20°C)1.484–1.488
    Flash point (open cup)≥ 210 °C
    Boiling point~ 385 °C
    Pour point≤ −50 °C
    Water content≤ 0.10%
    Acid value≤ 0.05 mg KOH/g
    Water solubilityInsoluble

    Applications

    • PVC plasticizer for cables, wires, films, sheets, flooring, and synthetic leather
    • Rubber processing to improve flexibility and processing behavior
    • Adhesives and sealants as a plasticizing component
    • Coatings and industrial compounds requiring flexibility and durability

    Note: Due to regulatory restrictions, DOP is mainly used in industrial applications. User compliance verification is recommended.

    Storage Conditions

    • Store in sealed containers in a cool, dry, and well-ventilated area
    • Avoid direct sunlight, moisture, and strong oxidizing agents
    • Recommended storage temperature: ambient
    • Shelf life: 12–24 months under proper storage conditions

    Safety Precautions

    • Avoid prolonged skin contact and eye exposure; wear protective gloves and safety goggles
    • Ensure adequate ventilation during heated processing
    • Spilled material may cause slipping—clean immediately
    • Regulatory note: Classified as SVHC under EU REACH; restricted in toys, childcare articles, and certain consumer products
    • SDS available upon request

    FAQ - Technical & Supply Chain

    • Q:

      What is the main function of DOP CAS 117-81-7 in PVC processing?

      A: DOP acts as a Plasticizer; it inserts itself between the polymer chains of PVC, increasing the free volume and allowing the chains to slide past each other. This transforms brittle, rigid PVC into a flexible, rubber-like material suitable for cables and films.
    • Q:

      What is the difference between DOP and DOTP?

      A: DOP (CAS 117-81-7) is a phthalate-based plasticizer, which is highly cost-effective but faces regulatory restrictions in some regions (like EU REACH) for children's toys and medical devices. DOTP (Dioctyl Terephthalate) is a non-phthalate isomer often used as an eco-friendly substitute where stricter environmental or health regulations are in place.
    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.

    Contact Form

    Use our contact form to send us your questions, suggestions or comments. We will respond as soon as possible.

    Product Categories

    Tags:

    Ester Plasticizer Flexible PVC Plasticizer Phthalate Plasticizer Polymer Additive

    Related Products