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    HomeProductsSpecialty ChemicalsN-Octadecane CAS 593-45-3
    • N-Octadecane CAS 593-45-3

    N-Octadecane CAS 593-45-3

    N-Octadecane (CAS 593-45-3) is a linear hydrocarbon alkane utilizing its specific melting point (~28°C) as a highly efficient Phase Change Material (PCM) for thermal energy storage. Chemically identified as Octadecane or C18 Paraffin, this white crystalline solid or colorless liquid functions to absorb and release heat energy during phase transitions, maintaining stable ambient temperatures. As a high-purity Straight-chain alkane, it is extensively integrated into microencapsulated textiles, temperature-regulating building materials, and cold chain logistics packaging to provide passive thermal management. We ensure bulk supply capabilities for this material, providing access to competitive factory pricing and customized specifications to meet specific purity requirements (e.g., >99% for PCM grade). Full technical documentation, including MSDS, TDS, COA, is available to support compliance and safety protocols.

    • CAS: 593-45-3
    • Synonyms: N-Octadecane / Octadecane
    • Einecs: 209-790-3
    • Molecular Formula: C18H38
    • Grade: Industrial Grade / PCM Grade / Reagent Grade
    • Package: 150kg Iron Drum or 750kg IBC Tank
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    Product Description

    Our N-Octadecane is produced through advanced distillation and purification processes, ensuring a purity of over 99%.

    Why is it special?

    1. Thermal Regulation (PCM): With a phase change temperature of ~28°C, it is ideal for “smart textiles” (e.g., cooling bedding, sportswear) and building insulation. It absorbs heat as it melts and releases heat as it solidifies, maintaining a comfortable temperature range.
    2. Chemical Stability: It is chemically inert, stable under normal conditions, and non-corrosive, making it safe for encapsulation.
    3. High Enthalpy: It possesses a high latent heat capacity, meaning it can store a significant amount of thermal energy relative to its mass.
    1 Physicochemical Properties
    2 Applications
    3 Storage Conditions
    4 Safety Precautions

    Physicochemical Properties

    N-Octadecane is sensitive to temperature. Note: It may appear as a white solid in winter or a colorless liquid in summer/heated warehouses.

    Test ItemSpecification (Standard)
    Appearance ( < 28°C )White crystalline solid or flakes
    Appearance ( > 28°C )Colorless, transparent liquid
    Assay (GC Purity)≥ 99.0%
    Melting Point28.0°C – 30.0°C
    Boiling PointApprox. 317°C
    Density (20°C)0.777 g/mL (Solid/Liquid transition zone)
    Flash Point> 165°C
    Refractive Index1.4390
    Water Content≤ 100 ppm
    Sulfur Content≤ 2 ppm
    SolubilityInsoluble in water; Soluble in ethanol, ether, acetone

    Applications

    1. Phase Change Materials (PCM):
      • Textiles: Microencapsulated into fibers for temperature-regulating clothing and bedding (cool-touch fabrics).
      • Construction: Incorporated into wallboards or roofing materials to balance indoor temperatures and save energy.
      • Cold Chain Logistics: Used in shipping containers to maintain specific temperature ranges for pharmaceuticals.
    2. Chemical Synthesis: Used as a raw material for producing surfactants and emulsifiers.
    3. Laboratory & Analysis: acts as a reference standard in Gas Chromatography (GC) for determining retention times of petroleum fractions.
    4. Solvents: A non-polar solvent used in specialized organic reactions.

    Storage Conditions

    • Temperature: Store in a cool place, preferably below 25°C to keep it in solid form, though liquid storage is also acceptable.
    • Ventilation: Store in a well-ventilated area away from direct sunlight.
    • Fire Safety: Keep away from open flames, sparks, and heat sources. It is a combustible hydrocarbon.
    • Packaging: Keep containers tightly closed. Ensure drums are not damaged, as the product may leak if it melts during transport in hot weather.

    Safety Precautions

    • Flammability: Combustible liquid/solid. In case of fire, use foam, dry chemical, or carbon dioxide extinguishers. Do not use a direct water jet.
    • Handling: Avoid prolonged contact with skin. It acts like a wax or oil and may cause mild irritation or clog pores.
    • Inhalation: Avoid breathing vapors or mists, especially if the product is heated.
    • Spills: If spilled in liquid form, it will solidify as it cools. Scrape up the solid or absorb the liquid with sand/earth.
    • PPE: Wear safety glasses and protective gloves (nitrile or neoprene) when handling bulk quantities.

    FAQ - Technical & Supply Chain

    • Q:

      How is N-Octadecane CAS 593-45-3 utilized as a Phase Change Material (PCM)?

      A: N-Octadecane (CAS 593-45-3) is chemically characterized by a melting point of approximately 28°C, allowing it to act as a latent heat storage material that buffers temperature fluctuations in smart textiles and construction materials.
    • Q:

      Is this hydrocarbon suitable for organic synthesis applications?

      A: Yes, this material is typically applied as a non-polar solvent and a chemical intermediate in the synthesis of surfactants and specialized organic compounds due to its chemical stability and defined structure.
    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:

    Hydrocarbon Wax Organic Solvent Paraffin Hydrocarbon Phase Change Material

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