18-Methyleicosanoic acid

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  • Identifiers

    CAS number
    36332-93-1

    Molecular formula
    C21H42O2

    SMILES
    CCC(C)CCCCCCCCCCCCCCCCC(=O)O

    Safety labels

  • Odor profile

    Fragrance
    Waxy 81.39%
    Fatty 70.03%
    Oily 39.5%
    Odorless 31.04%
    Creamy 23.09%
    Meaty 21.03%
    Savory 20.51%
    Dairy 19.51%
    Milky 18.93%
    Fishy 18.63%

     

    Flavor
    Fatty 51.17%
    Waxy 49.83%
    Mild 38.29%
    Bland 33.52%
    Fat 33.5%
    Faint 32.69%
    Odorless 29.4%
    Oily 28.77%
    Coconut 26.54%
    Slightly waxy 26.2%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    9.5

    pKa est.
    7.54 (neutral)

    Molecular weight
    326.6 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    405°C

    Flash point

    • 199.85 ˚C est.

  • Synonyms

    • 18-Methyleicosanoic acid
    • 18-methylicosanoic acid
    • 36332-93-1
    • Methylarachidic acid
    • Anteisoheneicosanoic acid
    • 18-MEA
    • Eicosanoic acid, 18-methyl-
    • 7STP871R4S
    • CHEBI:84877
    • DTXSID201312907
    • RefChem:79386
    • DTXCID60219479
    • 18-methyl eicosanoic acid
    • UNII-7STP871R4S
    • (+)-18-methyl-icosanoic acid
    • (+)-18-methyl-eicosanoic acid
    • LMFA01020018
    • 18-methylarachidic acid
    • SCHEMBL336842
    • PD019744
    • HY-121950
    • CS-0083736
    • Q27158144
    • 36332-93-1

  • Applications

    18-Methyleicosanoic acid (CAS 36332-93-1) is a branched long-chain fatty acid used as a building block for the synthesis of complex esters and other high-molecular-weight compounds. In cosmetics and personal care, it serves as a feedstock for conditioning esters and emulsifiers. In polymers/plastics, it can act as a fatty-acid modifier or additive to improve plastic properties. In coatings and inks, it provides wax-like components for texture and gloss control. In industrial waxes and lubricants, it is used as a source of fatty acid for wax and lubricant products. In surfactants and cleaning formulations, it can be converted to esters or surfactant salts for household and industrial cleaners.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 15.32
    methanol 12.57
    isopropanol 21.99
    water 0.01
    ethyl acetate 63.57
    n-propanol 19.63
    acetone 32.25
    n-butanol 26.69
    acetonitrile 8.71
    DMF 73.15
    toluene 24.89
    isobutanol 22.39
    1,4-dioxane 74.75
    methyl acetate 35.8
    THF 336.62
    2-butanone 59.93
    n-pentanol 25.57
    sec-butanol 27.66
    n-hexane 10.61
    ethylene glycol 0.8
    NMP 248.53
    cyclohexane 37.03
    DMSO 116.0
    n-butyl acetate 129.96
    n-octanol 38.47
    chloroform 170.2
    n-propyl acetate 121.93
    acetic acid 17.29
    dichloromethane 162.01
    cyclohexanone 224.29
    propylene glycol 4.38
    isopropyl acetate 91.94
    DMAc 179.57
    2-ethoxyethanol 56.38
    isopentanol 44.29
    n-heptane 12.62
    ethyl formate 26.26
    1,2-dichloroethane 122.88
    n-hexanol 31.83
    2-methoxyethanol 50.0
    isobutyl acetate 95.42
    tetrachloromethane 48.96
    n-pentyl acetate 188.93
    transcutol 411.81
    n-heptanol 37.46
    ethylbenzene 28.89
    MIBK 105.69
    2-propoxyethanol 78.65
    tert-butanol 58.58
    MTBE 94.85
    2-butoxyethanol 101.2
    propionic acid 21.76
    o-xylene 30.36
    formic acid 3.17
    diethyl ether 45.2
    m-xylene 28.02
    p-xylene 40.32
    chlorobenzene 49.27
    dimethyl carbonate 14.91
    n-octane 7.03
    formamide 6.92
    cyclopentanone 237.29
    2-pentanone 76.69
    anisole 66.78
    cyclopentyl methyl ether 157.34
    gamma-butyrolactone 192.39
    1-methoxy-2-propanol 74.87
    pyridine 71.91
    3-pentanone 57.67
    furfural 127.21
    n-dodecane 3.92
    diethylene glycol 22.94
    diisopropyl ether 38.62
    tert-amyl alcohol 63.14
    acetylacetone 103.94
    n-hexadecane 4.83
    acetophenone 92.68
    methyl propionate 45.76
    isopentyl acetate 158.45
    trichloroethylene 207.08
    n-nonanol 41.07
    cyclohexanol 59.79
    benzyl alcohol 35.26
    2-ethylhexanol 43.29
    isooctanol 47.95
    dipropyl ether 93.22
    1,2-dichlorobenzene 76.51
    ethyl lactate 43.5
    propylene carbonate 118.72
    n-methylformamide 18.77
    2-pentanol 27.23
    n-pentane 5.88
    1-propoxy-2-propanol 108.75
    1-methoxy-2-propyl acetate 146.8
    2-(2-methoxypropoxy) propanol 113.82
    mesitylene 28.07
    ε-caprolactone 207.94
    p-cymene 33.25
    epichlorohydrin 219.9
    1,1,1-trichloroethane 150.53
    2-aminoethanol 5.16
    morpholine-4-carbaldehyde 158.64
    sulfolane 429.15
    2,2,4-trimethylpentane 11.43
    2-methyltetrahydrofuran 213.3
    n-hexyl acetate 166.36
    isooctane 7.84
    2-(2-butoxyethoxy)ethanol 145.02
    sec-butyl acetate 112.86
    tert-butyl acetate 173.96
    decalin 19.38
    glycerin 8.35
    diglyme 314.89
    acrylic acid 12.1
    isopropyl myristate 64.45
    n-butyric acid 69.42
    acetyl acetate 43.65
    di(2-ethylhexyl) phthalate 44.6
    ethyl propionate 93.61
    nitromethane 41.97
    1,2-diethoxyethane 173.9
    benzonitrile 41.04
    trioctyl phosphate 35.79
    1-bromopropane 78.49
    gamma-valerolactone 303.09
    n-decanol 26.24
    triethyl phosphate 77.24
    4-methyl-2-pentanol 31.78
    propionitrile 15.65
    vinylene carbonate 69.32
    1,1,2-trichlorotrifluoroethane 136.6
    DMS 66.19
    cumene 27.51
    2-octanol 37.47
    2-hexanone 105.4
    octyl acetate 70.06
    limonene 62.64
    1,2-dimethoxyethane 170.36
    ethyl orthosilicate 82.8
    tributyl phosphate 49.21
    diacetone alcohol 149.79
    N,N-dimethylaniline 58.35
    acrylonitrile 13.94
    aniline 26.7
    1,3-propanediol 15.63
    bromobenzene 61.69
    dibromomethane 105.84
    1,1,2,2-tetrachloroethane 243.49
    2-methyl-cyclohexyl acetate 144.96
    tetrabutyl urea 80.6
    diisobutyl methanol 42.55
    2-phenylethanol 42.71
    styrene 29.09
    dioctyl adipate 106.37
    dimethyl sulfate 50.91
    ethyl butyrate 138.28
    methyl lactate 25.73
    butyl lactate 115.45
    diethyl carbonate 65.98
    propanediol butyl ether 75.43
    triethyl orthoformate 129.3
    p-tert-butyltoluene 35.64
    methyl 4-tert-butylbenzoate 141.67
    morpholine 123.28
    tert-butylamine 42.11
    n-dodecanol 17.94
    dimethoxymethane 54.72
    ethylene carbonate 66.29
    cyrene 112.63
    2-ethoxyethyl acetate 175.06
    2-ethylhexyl acetate 134.45
    1,2,4-trichlorobenzene 96.52
    4-methylpyridine 78.18
    dibutyl ether 110.04
    2,6-dimethyl-4-heptanol 42.55
    DEF 106.07
    dimethyl isosorbide 280.5
    tetrachloroethylene 133.77
    eugenol 101.32
    triacetin 170.35
    span 80 104.14
    1,4-butanediol 6.72
    1,1-dichloroethane 97.29
    2-methyl-1-pentanol 41.09
    methyl formate 12.19
    2-methyl-1-butanol 35.05
    n-decane 9.69
    butyronitrile 26.82
    3,7-dimethyl-1-octanol 52.83
    1-chlorooctane 48.79
    1-chlorotetradecane 13.9
    n-nonane 9.24
    undecane 5.75
    tert-butylcyclohexane 17.34
    cyclooctane 10.78
    cyclopentanol 59.42
    tetrahydropyran 141.36
    tert-amyl methyl ether 94.16
    2,5,8-trioxanonane 183.23
    1-hexene 27.86
    2-isopropoxyethanol 62.27
    2,2,2-trifluoroethanol 9.86
    methyl butyrate 136.82

    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