Undecanoic acid, 2-methyl-

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  • Identifiers

    CAS number
    24323-25-9

    Molecular formula
    C12H24O2

    SMILES
    CCCCCCCCCC(C)C(=O)O

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Fatty 80.39%
    Waxy 73.32%
    Oily 49.88%
    Dairy 47.11%
    Cheesy 42.47%
    Milky 42.41%
    Citrus 42.16%
    Creamy 41.98%
    Coconut 34.26%
    Soapy 33.48%

     

    Flavor
    Waxy 58.58%
    Fatty 57.02%
    Oily 41.29%
    Fat 36.92%
    Soapy 31.93%
    Mild 31.54%
    Coconut 30.33%
    Creamy 30.3%
    Cheese 29.37%
    Green 28.13%

     

    Odor impact est.
    Medium

  • Properties

    XLogP3-AA
    5.0

    pKa est.
    7.84 (neutral)

    Molecular weight
    200.32 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    288°C

    Flash point

    • 138.39 ˚C est.

  • Synonyms

    • 2-Methylundecanoic acid
    • 24323-25-9
    • Undecanoic acid, 2-methyl-
    • EINECS 246-164-9
    • DTXSID00884903
    • RefChem:901055
    • DTXCID401024322
    • 246-164-9
    • Undecanoic acid,2-methyl-
    • 2-methyl-undecanoic acid
    • MFCD00060837
    • 2-methyl undecanoic acid
    • SCHEMBL220905
    • SCHEMBL919484
    • SCHEMBL4849724
    • SCHEMBL7787167
    • SCHEMBL23142266
    • CHEBI:179754
    • LMFA01020053
    • NS00051937
    • F72672
    • 323M259
    • 24323-25-9

  • Applications

    Undecanoic acid, 2-methyl- (CAS 24323-25-9) is primarily used as an intermediate in the synthesis of esters for flavors and fragrances; it is also converted to fatty acid esters that function as surfactants and emulsifiers in personal care and household products; it serves as a precursor to lubricants and plasticizers for polymers; a building block for specialty polymers and coating/ink formulations; it may be used in adhesives as a processing aid and to improve compatibility in formulations; subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 4293.55
    methanol 3785.88
    isopropanol 5044.01
    water 0.04
    ethyl acetate 2928.68
    n-propanol 3634.25
    acetone 4598.49
    n-butanol 2858.79
    acetonitrile 1595.55
    DMF 2951.4
    toluene 587.36
    isobutanol 2793.08
    1,4-dioxane 2822.65
    methyl acetate 1584.09
    THF 5026.97
    2-butanone 3266.6
    n-pentanol 2339.08
    sec-butanol 3397.81
    n-hexane 1321.15
    ethylene glycol 136.64
    NMP 1744.49
    cyclohexane 696.76
    DMSO 3214.61
    n-butyl acetate 2940.18
    n-octanol 732.11
    chloroform 2120.28
    n-propyl acetate 2600.17
    acetic acid 950.27
    dichloromethane 2144.0
    cyclohexanone 3617.88
    propylene glycol 477.77
    isopropyl acetate 2300.74
    DMAc 1665.79
    2-ethoxyethanol 2058.99
    isopentanol 2899.24
    n-heptane 273.6
    ethyl formate 1111.44
    1,2-dichloroethane 2169.56
    n-hexanol 2085.64
    2-methoxyethanol 2822.68
    isobutyl acetate 1486.39
    tetrachloromethane 476.05
    n-pentyl acetate 1531.84
    transcutol 4869.33
    n-heptanol 886.33
    ethylbenzene 454.13
    MIBK 1882.82
    2-propoxyethanol 2482.14
    tert-butanol 5476.09
    MTBE 5098.77
    2-butoxyethanol 1432.41
    propionic acid 1177.35
    o-xylene 443.6
    formic acid 188.62
    diethyl ether 4172.58
    m-xylene 513.23
    p-xylene 582.49
    chlorobenzene 780.94
    dimethyl carbonate 265.87
    n-octane 110.74
    formamide 397.6
    cyclopentanone 3173.33
    2-pentanone 3375.55
    anisole 842.45
    cyclopentyl methyl ether 2732.27
    gamma-butyrolactone 2525.07
    1-methoxy-2-propanol 2790.51
    pyridine 1677.75
    3-pentanone 1611.41
    furfural 1462.55
    n-dodecane 52.57
    diethylene glycol 966.58
    diisopropyl ether 1288.36
    tert-amyl alcohol 3651.92
    acetylacetone 1905.62
    n-hexadecane 63.02
    acetophenone 769.38
    methyl propionate 1487.55
    isopentyl acetate 2506.28
    trichloroethylene 2575.43
    n-nonanol 598.16
    cyclohexanol 2234.65
    benzyl alcohol 673.05
    2-ethylhexanol 1246.16
    isooctanol 809.92
    dipropyl ether 1974.11
    1,2-dichlorobenzene 740.02
    ethyl lactate 529.92
    propylene carbonate 1324.52
    n-methylformamide 1322.99
    2-pentanol 2605.71
    n-pentane 506.17
    1-propoxy-2-propanol 2182.61
    1-methoxy-2-propyl acetate 1756.64
    2-(2-methoxypropoxy) propanol 826.43
    mesitylene 374.38
    ε-caprolactone 2492.12
    p-cymene 292.97
    epichlorohydrin 2933.21
    1,1,1-trichloroethane 1761.88
    2-aminoethanol 766.25
    morpholine-4-carbaldehyde 1733.49
    sulfolane 2698.92
    2,2,4-trimethylpentane 211.82
    2-methyltetrahydrofuran 4310.89
    n-hexyl acetate 1557.66
    isooctane 189.7
    2-(2-butoxyethoxy)ethanol 1425.82
    sec-butyl acetate 1783.11
    tert-butyl acetate 2292.44
    decalin 262.14
    glycerin 438.96
    diglyme 2378.02
    acrylic acid 536.96
    isopropyl myristate 485.29
    n-butyric acid 2698.02
    acetyl acetate 879.77
    di(2-ethylhexyl) phthalate 350.5
    ethyl propionate 1668.35
    nitromethane 1604.99
    1,2-diethoxyethane 2665.34
    benzonitrile 832.38
    trioctyl phosphate 307.78
    1-bromopropane 1956.41
    gamma-valerolactone 3326.64
    n-decanol 402.85
    triethyl phosphate 400.71
    4-methyl-2-pentanol 1328.86
    propionitrile 1722.02
    vinylene carbonate 884.01
    1,1,2-trichlorotrifluoroethane 1331.0
    DMS 641.82
    cumene 342.71
    2-octanol 695.35
    2-hexanone 2496.09
    octyl acetate 574.78
    limonene 579.28
    1,2-dimethoxyethane 3592.62
    ethyl orthosilicate 452.66
    tributyl phosphate 406.55
    diacetone alcohol 1910.88
    N,N-dimethylaniline 573.69
    acrylonitrile 1222.23
    aniline 832.47
    1,3-propanediol 1356.58
    bromobenzene 799.22
    dibromomethane 1763.78
    1,1,2,2-tetrachloroethane 2476.26
    2-methyl-cyclohexyl acetate 945.57
    tetrabutyl urea 480.18
    diisobutyl methanol 693.54
    2-phenylethanol 775.51
    styrene 568.84
    dioctyl adipate 614.2
    dimethyl sulfate 453.74
    ethyl butyrate 1593.8
    methyl lactate 482.88
    butyl lactate 883.6
    diethyl carbonate 678.35
    propanediol butyl ether 1049.7
    triethyl orthoformate 896.08
    p-tert-butyltoluene 304.53
    methyl 4-tert-butylbenzoate 663.37
    morpholine 4582.97
    tert-butylamine 3532.96
    n-dodecanol 287.74
    dimethoxymethane 1824.61
    ethylene carbonate 936.72
    cyrene 613.27
    2-ethoxyethyl acetate 1393.79
    2-ethylhexyl acetate 1805.04
    1,2,4-trichlorobenzene 767.93
    4-methylpyridine 1852.57
    dibutyl ether 1483.51
    2,6-dimethyl-4-heptanol 693.54
    DEF 2762.16
    dimethyl isosorbide 1282.03
    tetrachloroethylene 1633.05
    eugenol 638.24
    triacetin 839.54
    span 80 832.14
    1,4-butanediol 578.12
    1,1-dichloroethane 2479.87
    2-methyl-1-pentanol 1891.12
    methyl formate 572.94
    2-methyl-1-butanol 2331.92
    n-decane 123.65
    butyronitrile 2502.02
    3,7-dimethyl-1-octanol 837.14
    1-chlorooctane 563.63
    1-chlorotetradecane 159.1
    n-nonane 136.28
    undecane 76.1
    tert-butylcyclohexane 289.88
    cyclooctane 180.61
    cyclopentanol 2240.71
    tetrahydropyran 5094.88
    tert-amyl methyl ether 2550.49
    2,5,8-trioxanonane 1286.44
    1-hexene 2962.04
    2-isopropoxyethanol 1709.87
    2,2,2-trifluoroethanol 212.55
    methyl butyrate 2490.38

    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