Undecylenic Acid

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  • Identifiers

    CAS number
    112-38-9

    Molecular formula
    C11H20O2

    SMILES
    C=CCCCCCCCCC(=O)O

    Safety labels

    Irritant
    Irritant

    Environmental Hazard
    Environmental

  • Odor profile

    Fatty 88.38%
    Waxy 73.13%
    Green 55.72%
    Dairy 51.97%
    Fruity 45.85%
    Citrus 45.69%
    Oily 43.92%
    Sweet 41.5%
    Creamy 41.2%
    Milky 41.09%

    Scent© AI

  • Properties

    XLogP3-AA
    3.9

    Molecular weight
    184.27 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Melting point expt.

    • 24.5 undefined
    • 24.5 °C

    Boiling point

    • Decomposes at 275°C
    • 137.00 °C. @ 2.00 mm Hg

    Flash point est.
    143.52 ˚C

    Solubility expt.

    • Insoluble
    • 0.0737 mg/mL at 30 °C
    • insoluble in water; soluble in alcohol and ether

  • Synonyms

    • undecylenic acid
    • 10-UNDECENOIC ACID
    • Undec-10-enoic acid
    • 112-38-9
    • Undecenoic acid
    • Desenex
    • 10-Hendecenoic acid
    • Renselin
    • Sevinon
    • Declid
    • 10-Undecylenic acid
    • 9-Undecylenic acid
    • Undecyl-10-enic acid
    • FEMA No. 3247
    • undecylenate
    • Kyselina undecylenova
    • Caswell No. 901
    • UNDECEN-10-ACID-1
    • Undecenoic acid, omega-
    • Undecylenic acid [JAN]
    • Hendecenoic acid, omega-
    • omega-undecenoic acid
    • NSC 2013
    • omega-hendecenoic acid
    • 10-Henedecenoic acid
    • CHEBI:35045
    • undecelinic acid
    • 10-Hendecenoic
    • 10-Undecensaeure
    • NSC-2013
    • EINECS 203-965-8
    • n-Undecylenic acid
    • UNII-K3D86KJ24N
    • MFCD00004442
    • Undecen-10-saeure
    • Cruex
    • EPA Pesticide Chemical Code 085501
    • BRN 1762631
    • K3D86KJ24N
    • Cruex (TN)
    • Kyselina 9-decen-1-karboxylova
    • acide 10-undecylique
    • acido 10-undecenoico
    • 1333-28-4
    • DTXSID8035001
    • acide 10-undecanoique
    • AI3-02065
    • NSC2013
    • Undecylenic acid (JAN/USP)
    • Undecylenic acid [USP:JAN]
    • DTXCID6015001
    • EC 203-965-8
    • 4-02-00-01612 (Beilstein Handbook Reference)
    • Undesine
    • C11:1n-1
    • NCGC00159425-02
    • NCGC00159425-04
    • Undecylenic acid (USP:JAN)
    • UNDECYLENIC ACID (II)
    • UNDECYLENIC ACID [II]
    • UNDECENOIC ACID (MART.)
    • UNDECENOIC ACID [MART.]
    • Undecenoicacid
    • UNDECYLENIC ACID (USP-RS)
    • UNDECYLENIC ACID [USP-RS]
    • UNDECYLENIC ACID (EP MONOGRAPH)
    • UNDECYLENIC ACID [EP MONOGRAPH]
    • Undecylenic acid; Undec-10-enoic acid
    • UNDECYLENIC ACID (USP MONOGRAPH)
    • UNDECYLENIC ACID [USP MONOGRAPH]
    • 96451-28-4
    • CAS-112-38-9
    • Kyselina undecylenova [Czech]
    • 10-Undecenoic acid, 98%
    • Kyselina 9-decen-1-karboxylova [Czech]
    • Desinex
    • Micocilen
    • Tobcharm
    • HongocuraM
    • HongocuraS
    • Antifungal Pen
    • undecylenic-acid
    • Remedy Nails
    • Anti-Fungal Pen
    • Rite Aid Fungal
    • Undecylenenic acid
    • MicocilenAntifungal
    • Topcare Antifungal
    • Antifungal Solution
    • Diabetic Antifungal
    • Anti-Fungal Liquid
    • Fungicure LiquidGel
    • 10-Undecenic acid
    • Antifungal Nail Pen
    • EINECS 215-583-9
    • EmoniNail Antifungal
    • Hongocura Pinceladas
    • n-UNDECYLENIC ACID (10-1)
    • Zinc Undecylenate (undecylenic acid)
    • Anti-Fungal PenCVS
    • 10-undeceneoic acid
    • Flexitol Anti Fungal
    • TERPENICOL
    • Zeta Clear Antifungal
    • NU CALMAR
    • HC Max Hongo CuraMS
    • Undecylenic Acid Liquid
    • Undecylenic acid, USAN
    • FungicureMaximum Strength
    • Premier Value Antifungal
    • FUNGWAY Fungus Clearing
    • Anti-Fungal Nail Solution
    • Good Neighbor Anti-Fungal
    • Tineacide Physician Formula
    • Fiore Rx Antifungal ProPen
    • Sally HansenNo More Fungus
    • Hongo KillerNail and Fungus
    • NCIOpen2_002642
    • UNDECYLENATE [VANDF]
    • WLN: QV9U1
    • Direct Naturals Fungus Clear
    • SCHEMBL17827
    • UNDECYLENIC ACID [MI]
    • Pinceladas Para Hongos Navarro
    • Maximum Strength Antifungal Pen
    • 10-Undecenoic acid (Standard)
    • Diabetic Antifungal Professional
    • CHEMBL1276010

  • Applications

    Undecylenic acid (CAS 112-38-9) is an eleven-carbon unsaturated fatty acid prized for its potent antifungal activity, making it a common ingredient in topical pharmaceuticals for ringworm, athlete’s foot and other dermatomycoses; beyond medicine it serves as a natural deodorizing agent in cosmetics, a surface-modifying additive that enhances polymer adhesion, a precursor for flavor-fragrance synthesis, a monomer for nylon-11, an intermediate for plasticizers, bio-lubricants and corrosion inhibitors, an insect pheromone component, and an antimicrobial additive in coatings, thanks to its broad biocidal spectrum, mild odor and renewable castor-oil origin.

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 1097.44
    methanol 1180.7
    isopropanol 899.93
    water 0.05
    ethyl acetate 373.24
    n-propanol 706.63
    acetone 819.11
    n-butanol 676.23
    acetonitrile 162.26
    DMF 893.85
    toluene 109.17
    isobutanol 541.18
    1,4-dioxane 537.04
    methyl acetate 214.74
    THF 1617.64
    2-butanone 502.82
    n-pentanol 595.31
    sec-butanol 579.51
    n-hexane 215.81
    ethylene glycol 99.88
    NMP 602.33
    cyclohexane 85.4
    DMSO 1784.15
    n-butyl acetate 440.93
    n-octanol 181.57
    chloroform 320.71
    n-propyl acetate 381.03
    acetic acid 303.0
    dichloromethane 296.88
    cyclohexanone 717.31
    propylene glycol 265.04
    isopropyl acetate 334.29
    DMAc 546.81
    2-ethoxyethanol 596.01
    isopentanol 640.79
    n-heptane 52.16
    ethyl formate 169.99
    1,2-dichloroethane 334.08
    n-hexanol 550.72
    2-methoxyethanol 928.04
    isobutyl acetate 269.84
    tetrachloromethane 59.34
    n-pentyl acetate 250.0
    transcutol 1856.55
    n-heptanol 210.07
    ethylbenzene 98.55
    MIBK 423.63
    2-propoxyethanol 702.0
    tert-butanol 1058.08
    MTBE 635.72
    2-butoxyethanol 373.79
    propionic acid 292.23
    o-xylene 95.72
    formic acid 89.3
    diethyl ether 557.37
    m-xylene 124.11
    p-xylene 116.4
    chlorobenzene 130.45
    dimethyl carbonate 73.78
    n-octane 18.79
    formamide 128.53
    cyclopentanone 861.45
    2-pentanone 617.23
    anisole 200.98
    cyclopentyl methyl ether 740.13
    gamma-butyrolactone 692.22
    1-methoxy-2-propanol 894.19
    pyridine 303.27
    3-pentanone 295.87
    furfural 401.45
    n-dodecane 11.54
    diethylene glycol 406.27
    diisopropyl ether 194.78
    tert-amyl alcohol 670.85
    acetylacetone 469.03
    n-hexadecane 13.31
    acetophenone 200.56
    methyl propionate 276.56
    isopentyl acetate 410.18
    trichloroethylene 434.18
    n-nonanol 160.72
    cyclohexanol 493.1
    benzyl alcohol 192.15
    2-ethylhexanol 297.24
    isooctanol 179.72
    dipropyl ether 358.64
    1,2-dichlorobenzene 132.63
    ethyl lactate 153.17
    propylene carbonate 314.66
    n-methylformamide 322.75
    2-pentanol 523.14
    n-pentane 81.14
    1-propoxy-2-propanol 575.55
    1-methoxy-2-propyl acetate 394.73
    2-(2-methoxypropoxy) propanol 317.32
    mesitylene 96.24
    ε-caprolactone 508.37
    p-cymene 68.13
    epichlorohydrin 706.14
    1,1,1-trichloroethane 235.76
    2-aminoethanol 369.83
    morpholine-4-carbaldehyde 528.12
    sulfolane 948.8
    2,2,4-trimethylpentane 40.09
    2-methyltetrahydrofuran 991.93
    n-hexyl acetate 341.79
    isooctane 40.96
    2-(2-butoxyethoxy)ethanol 515.73
    sec-butyl acetate 280.26
    tert-butyl acetate 444.05
    decalin 55.81
    glycerin 284.32
    diglyme 756.92
    acrylic acid 169.96
    isopropyl myristate 121.48
    n-butyric acid 570.57
    acetyl acetate 148.34
    di(2-ethylhexyl) phthalate 111.05
    ethyl propionate 270.17
    nitromethane 348.14
    1,2-diethoxyethane 519.92
    benzonitrile 172.39
    trioctyl phosphate 89.07
    1-bromopropane 275.1
    gamma-valerolactone 806.49
    n-decanol 115.05
    triethyl phosphate 107.14
    4-methyl-2-pentanol 306.8
    propionitrile 206.72
    vinylene carbonate 198.26
    1,1,2-trichlorotrifluoroethane 427.57
    DMS 155.17
    cumene 83.25
    2-octanol 142.2
    2-hexanone 518.55
    octyl acetate 148.23
    limonene 130.04
    1,2-dimethoxyethane 824.96
    ethyl orthosilicate 118.65
    tributyl phosphate 113.06
    diacetone alcohol 565.32
    N,N-dimethylaniline 162.13
    acrylonitrile 185.85
    aniline 182.97
    1,3-propanediol 516.62
    bromobenzene 125.1
    dibromomethane 250.74
    1,1,2,2-tetrachloroethane 464.9
    2-methyl-cyclohexyl acetate 227.7
    tetrabutyl urea 153.13
    diisobutyl methanol 168.52
    2-phenylethanol 217.35
    styrene 108.95
    dioctyl adipate 177.09
    dimethyl sulfate 157.47
    ethyl butyrate 271.46
    methyl lactate 176.9
    butyl lactate 224.74
    diethyl carbonate 138.37
    propanediol butyl ether 397.35
    triethyl orthoformate 193.19
    p-tert-butyltoluene 73.81
    methyl 4-tert-butylbenzoate 201.17
    morpholine 923.0
    tert-butylamine 622.91
    n-dodecanol 82.79
    dimethoxymethane 552.88
    ethylene carbonate 185.16
    cyrene 248.98
    2-ethoxyethyl acetate 283.88
    2-ethylhexyl acetate 306.19
    1,2,4-trichlorobenzene 154.98
    4-methylpyridine 329.93
    dibutyl ether 278.74
    2,6-dimethyl-4-heptanol 168.52
    DEF 507.84
    dimethyl isosorbide 485.45
    tetrachloroethylene 303.45
    eugenol 207.53
    triacetin 250.19
    span 80 305.89
    1,4-butanediol 216.92
    1,1-dichloroethane 300.74
    2-methyl-1-pentanol 476.02
    methyl formate 148.76
    2-methyl-1-butanol 513.88
    n-decane 22.98
    butyronitrile 329.34
    3,7-dimethyl-1-octanol 214.39
    1-chlorooctane 106.54
    1-chlorotetradecane 35.79
    n-nonane 24.33
    undecane 15.6
    tert-butylcyclohexane 59.98
    cyclooctane 31.58
    cyclopentanol 597.63
    tetrahydropyran 903.47
    tert-amyl methyl ether 423.64
    2,5,8-trioxanonane 500.79
    1-hexene 540.05
    2-isopropoxyethanol 480.44
    2,2,2-trifluoroethanol 61.03
    methyl butyrate 394.0

    Scent© AI

1 4

IFRA standard 51

Recommendation
No restriction
Maximum acceptable concentrations in the finished product (%)
Category 1
Products applied to the lips
 No restriction Category 7A
Rinse-off products applied to the hair with some hand contact
 No restriction
Category 2
Products applied to the axillae
 No restriction Category 7B
Leave-on products applied to the hair with some hand contact
 No restriction
Category 3
Products applied to the face/body using fingertips
 No restriction Category 8
Products with significant anogenital exposure
 No restriction
Category 4
Products related to fine fragrance
 No restriction Category 9
Products with body and hand exposure, primarily rinse off
 No restriction
Category 5A
Body lotion products applied to the body using the hands (palms), primarily leave on
 No restriction Category 10A
Household care products with mostly hand contact
 No restriction
Category 5B
Face moisturizer products applied to the face using the hands (palms), primarily leave on
 No restriction Category 10B
Household care products with mostly hand contact, including aerosol/spray products (with potential leave-on skin contact)
 No restriction
Category 5C
Hand cream products applied to the hands using the hands (palms), primarily leave on
 No restriction Category 11A
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate without UV exposure
 No restriction
Category 5D
Baby Creams, baby Oils and baby talc
 No restriction Category 11B
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate with potential UV exposure
 No restriction
Category 6
Products with oral and lip exposure
 No restriction Category 12
Products not intended for direct skin contact, minimal or insignificant transfer to skin
 No restriction