Bio-Based

Undecylenic Acid

10-Undecenoic Acid

CAS No.112-38-9
EC No.203-965-8
FormulaC₁₁H₂₀O₂
MW184.28 g/mol

Undecylenic Acid is a high-purity unsaturated C11 fatty acid produced by pyrolysis of castor oil derivatives. It possesses excellent antifungal, antibacterial and surface-active properties while also serving as an important intermediate in pharmaceutical, cosmetic, agricultural and specialty chemical industries.

Chemical Structure

CH₂=CH–(CH₂)₈–COOH

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Undecylenic Acid

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7 Packaging Options

Mild antibacterial activity
Good hydrophobicity
High chemical reactivity through terminal double bond
Excellent intermediate for specialty synthesis
Renewable raw material origin from castor oil

Typical Specifications

ParameterSpecification
AppearanceClear colorless to pale yellow liquid or low melting solid
OdourMild characteristic fatty odour
Purity (GC)≥99.0% (Typical ≥99.5%)
Acid Value296–304 mg KOH/g
Iodine Value131–138 g I₂/100g
Moisture≤0.20%
Colour (APHA)≤100
Free Mineral AcidNil
Density (25°C)0.910–0.913 g/cm³
Refractive Index (25°C)1.446–1.448
Boiling Point~295°C
Melting Point21–24°C
Flash Point~140°C (Closed Cup)
SolubilityInsoluble in water; soluble in alcohols, ethers, ketones and hydrocarbons
Shelf Life24 months under recommended storage conditions

Values shown are typical and may vary by manufacturer and grade. Final supply shall be governed by the mutually approved specification and batch COA.

Applications

Antifungal creams, powders, skin ointments, foot sprays, nail solutions and medicated soaps (5–25% concentration)
Active against athlete's foot, ringworm, jock itch, tinea infections and fungal skin infections
Anti-dandruff formulations, deodorants, foot care creams and odour-control products
Agricultural bio-based fungicides — active against powdery mildew, downy mildew, Alternaria, Botrytis, Fusarium
Seed treatment, foliar sprays, post-harvest disease control and fruit coating formulations
Veterinary hoof care, antifungal sprays, animal skin creams and pet shampoos
Raw material for zinc undecylenate, sodium undecylenate, calcium undecylenate and esters
Polymer modification, UV-curable resins, adhesive intermediates and reactive diluents
Fragrance chemicals, corrosion inhibitors and specialty surfactants
Lubricant additives and biocide synthesis

Regulatory status and permitted applications vary by country and product grade.

Packaging Options

  • 25 kg HDPE Carboys
  • 50 kg HDPE Drums
  • 180 kg HDPE Drums
  • 200 kg MS Drums (lined)
  • IBC Containers
  • Bulk Tankers
  • Custom packaging available upon request

Industries Served

PharmaceuticalPersonal Care & CosmeticsAgricultureVeterinarySpecialty ChemicalsPolymer & ResinLubricantsFine Chemicals

Major Downstream Products

  • Zinc Undecylenate
  • Sodium Undecylenate
  • Undecylenoyl Chloride
  • Undecylenamide
  • Undecylenate Esters
  • Undecylenyl Alcohol
  • Specialty Polymers
  • Fragrance Intermediates
  • Agrochemical Intermediates

Compatibility

Vegetable oilsMineral oilsAlcohols & GlycolsNon-ionic surfactantsSilicone fluidsFatty alcoholsFatty acid esters

Storage

Store in tightly closed containers in a cool, dry place away from direct sunlight and oxidizing agents. Recommended storage temperature: 15–35°C.

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MSDS / TDS Documentation

Technical Data Sheet and Safety Data Sheet available upon request. Contact us with your details.