2-Undecenoic Acid

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  • Identifiers

    CAS number
    4189-02-0

    Molecular formula
    C11H20O2

    SMILES
    CCCCCCCC/C=C/C(=O)O

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Fatty 92.69%
    Green 76.28%
    Waxy 72.62%
    Dairy 65.54%
    Fruity 62.54%
    Oily 55.85%
    Milky 48.94%
    Creamy 43.46%
    Cheesy 38.78%
    Buttery 38.16%

     

    Flavor
    Waxy 64.49%
    Fatty 64.18%
    Fruity 56.87%
    Sweet 54.05%
    Fat 42.36%
    Oily 42.0%
    Green 41.52%
    Creamy 36.44%
    Fresh 31.98%
    Soapy 31.03%

     

    Odor impact est.
    Medium

  • Properties

    XLogP3-AA
    4.3

    pKa est.
    7.53 (neutral)

    Molecular weight
    184.27 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    287°C

    Flash point

    • 147.17 ˚C est.

  • Synonyms

    • 2-Undecenoic acid
    • 4189-02-0
    • 2-Undecensaeure
    • 2-Undecensaeuren
    • Undec-2-ensaeure
    • Undecen-2-saeure
    • undec-2-enoic acid
    • acido 2-undecenoico
    • acide 2-undecenoique
    • CHEBI:39449
    • C11:1, n-9
    • 11:1, n-9
    • DTXSID6057902
    • RefChem:483850
    • DTXCID50809787
    • 678-331-0
    • (E)-undec-2-enoic acid
    • 15790-94-0
    • trans-2-undecenoic acid
    • 2-hendecenoic acid
    • 2-undecenoicacid
    • 2-Undecenoic acid, (2E)-
    • (E)-2-Undecenoic acid
    • trans-undec-2-enoic acid
    • (2E)-undec-2-enoic acid
    • MFCD00040909
    • (2E)-2-Undecenoic acid
    • C11:1n-9
    • (E)-2-Undecenoic acid;(E)-Undec-2-enoic acid
    • trans-2-undecenoic-acid
    • orb1306974
    • SCHEMBL1150719
    • SCHEMBL7782867
    • CHEMBL3307202
    • CHEBI:39450
    • DTXSID60859617
    • LMFA01030034
    • AKOS015839095
    • BS-50660
    • DA-58695
    • SY238389
    • HY-133022
    • CS-0109438
    • U0032
    • BRD-K42959922-001-01-5
    • Q27119869
    • 4189-02-0

  • Applications

    2-Undecenoic Acid (CAS 4189-02-0) is used as a versatile building block in industrial chemistry. It serves as an intermediate for the synthesis of fragrance and flavor esters, and as a precursor for cosmetics and personal care ingredients. It can be employed as a monomer or comonomer in the production of specialty polymers and polyester or polyurethane resins. It is also used in coatings, inks, and adhesives as a reactive fatty-acid-derived component or ester crosslinking partner. In addition, it may function as a raw material for surfactant and lubricant derivatives, and as a platform for further functionalization owing to its carboxyl group and terminal double bond. These uses are typical in accordance with industry practice, subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 2268.23
    methanol 2414.96
    isopropanol 1889.87
    water 0.02
    ethyl acetate 910.51
    n-propanol 1663.09
    acetone 2102.07
    n-butanol 1360.2
    acetonitrile 440.28
    DMF 1931.53
    toluene 245.9
    isobutanol 1099.54
    1,4-dioxane 914.85
    methyl acetate 505.04
    THF 3109.23
    2-butanone 1323.43
    n-pentanol 1090.05
    sec-butanol 1261.59
    n-hexane 404.31
    ethylene glycol 140.89
    NMP 1131.2
    cyclohexane 153.77
    DMSO 3159.53
    n-butyl acetate 890.49
    n-octanol 269.22
    chloroform 622.92
    n-propyl acetate 759.34
    acetic acid 497.36
    dichloromethane 683.01
    cyclohexanone 1491.51
    propylene glycol 400.53
    isopropyl acetate 709.16
    DMAc 931.44
    2-ethoxyethanol 1007.76
    isopentanol 1146.83
    n-heptane 79.09
    ethyl formate 330.22
    1,2-dichloroethane 798.22
    n-hexanol 1024.27
    2-methoxyethanol 1674.86
    isobutyl acetate 486.98
    tetrachloromethane 110.88
    n-pentyl acetate 430.3
    transcutol 2465.26
    n-heptanol 331.82
    ethylbenzene 173.57
    MIBK 842.45
    2-propoxyethanol 1246.67
    tert-butanol 1943.51
    MTBE 1482.07
    2-butoxyethanol 571.91
    propionic acid 522.49
    o-xylene 165.72
    formic acid 119.91
    diethyl ether 1365.17
    m-xylene 240.9
    p-xylene 194.87
    chlorobenzene 251.74
    dimethyl carbonate 139.25
    n-octane 28.16
    formamide 235.88
    cyclopentanone 1854.04
    2-pentanone 1519.89
    anisole 344.74
    cyclopentyl methyl ether 1599.21
    gamma-butyrolactone 1275.22
    1-methoxy-2-propanol 1590.05
    pyridine 633.09
    3-pentanone 669.75
    furfural 625.7
    n-dodecane 16.33
    diethylene glycol 618.73
    diisopropyl ether 421.67
    tert-amyl alcohol 1265.94
    acetylacetone 926.65
    n-hexadecane 19.05
    acetophenone 309.59
    methyl propionate 650.35
    isopentyl acetate 820.48
    trichloroethylene 968.12
    n-nonanol 230.12
    cyclohexanol 927.85
    benzyl alcohol 315.12
    2-ethylhexanol 510.45
    isooctanol 280.99
    dipropyl ether 654.2
    1,2-dichlorobenzene 224.4
    ethyl lactate 245.23
    propylene carbonate 503.52
    n-methylformamide 691.01
    2-pentanol 1062.05
    n-pentane 166.03
    1-propoxy-2-propanol 1003.69
    1-methoxy-2-propyl acetate 752.96
    2-(2-methoxypropoxy) propanol 413.92
    mesitylene 167.74
    ε-caprolactone 908.83
    p-cymene 106.95
    epichlorohydrin 1460.28
    1,1,1-trichloroethane 520.66
    2-aminoethanol 636.16
    morpholine-4-carbaldehyde 878.84
    sulfolane 1645.52
    2,2,4-trimethylpentane 69.48
    2-methyltetrahydrofuran 2200.64
    n-hexyl acetate 555.99
    isooctane 72.51
    2-(2-butoxyethoxy)ethanol 700.81
    sec-butyl acetate 534.11
    tert-butyl acetate 874.18
    decalin 88.53
    glycerin 362.95
    diglyme 1055.44
    acrylic acid 274.85
    isopropyl myristate 177.76
    n-butyric acid 1026.7
    acetyl acetate 268.4
    di(2-ethylhexyl) phthalate 147.05
    ethyl propionate 539.15
    nitromethane 662.86
    1,2-diethoxyethane 910.9
    benzonitrile 298.83
    trioctyl phosphate 128.24
    1-bromopropane 675.97
    gamma-valerolactone 1467.3
    n-decanol 162.57
    triethyl phosphate 151.77
    4-methyl-2-pentanol 519.74
    propionitrile 510.19
    vinylene carbonate 311.3
    1,1,2-trichlorotrifluoroethane 718.34
    DMS 237.28
    cumene 128.4
    2-octanol 223.77
    2-hexanone 1034.77
    octyl acetate 220.55
    limonene 218.38
    1,2-dimethoxyethane 1399.24
    ethyl orthosilicate 168.8
    tributyl phosphate 157.13
    diacetone alcohol 1009.44
    N,N-dimethylaniline 249.16
    acrylonitrile 426.11
    aniline 378.39
    1,3-propanediol 831.26
    bromobenzene 258.05
    dibromomethane 561.51
    1,1,2,2-tetrachloroethane 904.05
    2-methyl-cyclohexyl acetate 344.35
    tetrabutyl urea 213.89
    diisobutyl methanol 263.86
    2-phenylethanol 367.47
    styrene 209.26
    dioctyl adipate 245.88
    dimethyl sulfate 257.57
    ethyl butyrate 482.08
    methyl lactate 294.14
    butyl lactate 332.2
    diethyl carbonate 208.71
    propanediol butyl ether 520.57
    triethyl orthoformate 297.91
    p-tert-butyltoluene 115.97
    methyl 4-tert-butylbenzoate 266.61
    morpholine 1818.57
    tert-butylamine 1191.69
    n-dodecanol 114.84
    dimethoxymethane 1128.06
    ethylene carbonate 295.91
    cyrene 336.99
    2-ethoxyethyl acetate 480.33
    2-ethylhexyl acetate 584.86
    1,2,4-trichlorobenzene 256.47
    4-methylpyridine 700.88
    dibutyl ether 447.58
    2,6-dimethyl-4-heptanol 263.86
    DEF 1138.64
    dimethyl isosorbide 668.4
    tetrachloroethylene 557.55
    eugenol 282.37
    triacetin 317.72
    span 80 397.86
    1,4-butanediol 329.23
    1,1-dichloroethane 743.62
    2-methyl-1-pentanol 819.38
    methyl formate 277.82
    2-methyl-1-butanol 988.97
    n-decane 32.76
    butyronitrile 768.26
    3,7-dimethyl-1-octanol 317.88
    1-chlorooctane 169.1
    1-chlorotetradecane 53.04
    n-nonane 35.17
    undecane 22.38
    tert-butylcyclohexane 98.92
    cyclooctane 51.05
    cyclopentanol 1067.05
    tetrahydropyran 1891.75
    tert-amyl methyl ether 891.64
    2,5,8-trioxanonane 643.17
    1-hexene 1119.68
    2-isopropoxyethanol 773.6
    2,2,2-trifluoroethanol 84.96
    methyl butyrate 768.93

    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