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    HomeProductsDaily ChemicalsCosmetic Raw MaterialsOctadecenedioic Acid CAS 20701-68-2
    • Octadecenedioic Acid CAS 20701-68-2

    Octadecenedioic Acid CAS 20701-68-2

    Octadecenedioic Acid (CAS 20701-68-2) is a long-chain monounsaturated dicarboxylic acid (LCDA) functioning as a potent skin brightening agent in cosmetics and a high-performance monomer in polymer synthesis. Chemically identified as Octadec-9-ene-1,18-dioic acid, this white to off-white powder acts to inhibit melanogenesis by interacting with PPAR receptors and serves as a cross-linking agent in the production of polyamides and polyesters. As a specialized Dioic acid derivative obtained typically via bio-fermentation of oleic acid, it is extensively integrated into advanced skincare formulations for dark spot reduction and into industrial coatings for corrosion inhibition. We ensure bulk supply capabilities for this material, providing access to competitive factory pricing and customized specifications to meet specific purity and acid value requirements. Full technical documentation, including MSDS, TDS, COA, is available to support compliance and safety protocols.

    • CAS: 20701-68-2
    • Synonyms: Octadec-9-ene-1,18-dioic acid, 9-Octadecenedioic acid, Dioic acid C18:1, (E)-octadec-9-enedioic acid
    • Einecs: 243-946-8
    • Molecular Formula: C18H32O4
    • Grade: Cosmetic Grade
    • Package: 1kg Aluminum Foil Bag / 25kg Fiber Drum
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    Product Description

    Octadecenedioic Acid is produced through a bio-fermentation process using oleic acid (from vegetable oils). It acts as a dual-action agent:

    1. Skin Brightening: It binds to the Peroxisome Proliferator-Activated Receptor (PPAR) in melanocytes, regulating the transcription of tyrosinase, thereby reducing melanin synthesis more effectively than tyrosinase inhibitors alone.
    2. Anti-Inflammatory & Anti-Acne: It demonstrates bacteriostatic properties similar to Azelaic Acid but is effective at much lower concentrations.

    Why choose Octadecenedioic Acid?

    • High Permeability: Its lipophilic nature ensures deep penetration into the epidermis.
    • Stability: Excellent thermal and pH stability compared to other whitening agents like Vitamin C or Kojic Acid.
    • Safety: Non-cytotoxic and safe for daytime use (non-photosensitizing).
    1 Physicochemical Properties
    2 Applications
    3 Storage Conditions
    4 Safety Precautions

    Physicochemical Properties

    The following parameters represent standard high-purity Cosmetic Grade specifications.

    Test ItemSpecification (Standard)
    AppearanceWhite to off-white crystalline powder
    OdorCharacteristic, slight
    Assay (GC / HPLC)≥ 98.0%
    Acid Value350 – 370 mg KOH/g
    Melting Point85.0°C – 95.0°C
    Loss on Drying≤ 1.0%
    Residue on Ignition≤ 0.5%
    Heavy Metals (Pb)≤ 10 ppm
    Arsenic (As)≤ 2 ppm
    SolubilitySoluble in Ethanol, Glycols (Butylene Glycol), and Oils; Insoluble in Water
    Bacterial Count< 100 CFU/g

    Applications

    1. Skin Whitening & Brightening: Primary active ingredient in serums, spot correctors, and whitening creams to treat melasma, sun spots, and post-inflammatory hyperpigmentation.
    2. Anti-Acne Preparations: Used to control sebum production and reduce acne-causing bacteria.
    3. Anti-Aging: Helps improve skin texture and reduce the appearance of fine lines.
    4. Deodorants: Due to its antimicrobial properties against odor-causing bacteria.

    Formulation Tips:

    • Recommended Dosage: 1.0% – 4.0%.
    • Incorporation: It is oil-soluble. It should be dissolved in the oil phase or a solvent (like pentylene glycol) at elevated temperatures (approx. 50-60°C) before emulsification.

    Storage Conditions

    • Temperature: Store in a cool, dry place (preferably < 25°C).
    • Light: Protect from direct sunlight and strong light sources.
    • Packaging: Keep the inner bag tightly sealed to prevent oxidation and moisture absorption.
    • Shelf Life: 24 months from the date of manufacture when stored properly.

    Safety Precautions

    • Handling: Although it is a cosmetic ingredient, the pure raw material is a concentrated acid. Avoid direct contact with eyes.
    • Inhalation: Use a dust mask if handling large quantities of powder to prevent respiratory irritation.
    • Skin Contact (Raw Material): Wash with soap and water. It is generally non-irritating in diluted finished products but can be irritating in 100% pure form.
    • Eye Contact: Rinse immediately with plenty of water for at least 15 minutes and seek medical advice.

    FAQ - Technical & Supply Chain

    • Q:

      How is Octadecenedioic Acid CAS 20701-68-2 chemically classified in industrial applications?

      A: Octadecenedioic Acid (CAS 20701-68-2) is classified as an unsaturated long-chain dicarboxylic acid (C18), chemically known as 9-Octadecenedioic acid, and is supplied as a bifunctional building block for both cosmetic actives and polymer backbones.
    • Q:

      Is this ingredient effective for skin depigmentation products?

      A: Yes, this material is typically applied in cosmetic formulations as a "Dioic Acid" active, where it helps reduce hyperpigmentation and regulate sebum production through a mechanism distinct from traditional tyrosinase inhibitors.
    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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    Cosmetic Active Ingredient Dicarboxylic Acid Long Chain Dicarboxylic Acid Skin Brightening Ingredient

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