Undecylenic Acid

Name: Undecylenic Acid
Brand: GreenChem Global

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. High GC purity (typically ≥99.5%) with consistent batch-to-batch quality.

Chemical Structure

CH₂=CH–(CH₂)₈–COOH

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Broad-spectrum antifungal activity

Excellent activity against dermatophytes

Mild antibacterial activity

Good hydrophobicity

High chemical reactivity through terminal double bond

Excellent intermediate for specialty synthesis

Renewable raw material origin from castor oil

Low mammalian toxicity

Typical Specifications

Parameter	Specification
Appearance	Clear colorless to pale yellow liquid or low melting solid
Odour	Mild characteristic fatty odour
Purity (GC)	≥99.0% (Typical ≥99.5%)
Acid Value	296–304 mg KOH/g
Iodine Value	131–138 g I₂/100g
Moisture	≤0.20%
Colour (APHA)	≤100
Free Mineral Acid	Nil
Density (25°C)	0.910–0.913 g/cm³
Refractive Index (25°C)	1.446–1.448
Boiling Point	~295°C
Melting Point	21–24°C
Flash Point	~140°C (Closed Cup)
Solubility	Insoluble in water; soluble in alcohols, ethers, ketones and hydrocarbons
Shelf Life	24 months under recommended storage conditions

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

Typical Efficacy

Property	Relative Performance
Antifungal Activity	Excellent
Antibacterial Activity	Moderate
Anti-biofilm Activity	Good
Plant Disease Control	Good–Excellent (when formulated)
Deodorizing Property	Excellent
Surface Activity	Moderate
Chemical Reactivity	Excellent

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.