Octadecane, 9-methyl

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  • Identifiers

    CAS number
    26741-18-4

    Molecular formula
    C19H40

    SMILES
    CCCCCCCCCC(C)CCCCCCCC

    Safety labels

  • Odor profile

    Fragrance
    Waxy 78.29%
    Oily 33.55%
    Fatty 32.52%
    Sweet 23.74%
    Gassy 22.39%
    Odorless 20.52%
    Fishy 18.72%
    Meaty 16.99%
    Burnt 15.18%
    Clean 15.13%

     

    Flavor
    Alkane 62.59%
    Waxy 46.31%
    Bland 24.78%
    Mild 23.85%
    Delicate 22.37%
    Slightly waxy 21.91%
    Incense 20.71%
    Citrus peel 20.61%
    Grapefruit peel 20.09%
    Diterpene 19.75%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    10.2

    pKa est.
    8.27 (weak base)

    Molecular weight
    268.5 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    323°C

    Flash point

    • 143.45 ˚C est.

  • Synonyms

    • Octadecane, 9-methyl
    • 9-methyl-octadecane
    • 26741-18-4
    • SCHEMBL199412
    • SCHEMBL1041259
    • SCHEMBL1259903
    • SCHEMBL1964503
    • SCHEMBL5985740
    • SCHEMBL7684801
    • SCHEMBL28161038
    • DTXSID201366497
    • 26741-18-4

  • Applications

    Octadecane, 9-methyl (CAS 26741-18-4) is a long-chain, branched saturated hydrocarbon commonly used as a hydrocarbon emollient and texture enhancer in cosmetics and personal care; as a solvent/diluent in coatings, paints, and inks; as a lubricant base oil in industrial manufacturing and as a lubricity additive for polymer systems; as a waxy component or slip agent in plastic and resin formulations; and may serve as a processing solvent or cleaning formulation diluent in machinery and equipment maintenance, depending on local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 310.74
    methanol 91.45
    isopropanol 570.28
    water 0.0
    ethyl acetate 3495.54
    n-propanol 555.17
    acetone 1936.17
    n-butanol 969.63
    acetonitrile 353.41
    DMF 872.97
    toluene 2225.62
    isobutanol 681.08
    1,4-dioxane 3618.83
    methyl acetate 1349.41
    THF 8702.73
    2-butanone 2464.54
    n-pentanol 688.23
    sec-butanol 927.19
    n-hexane 3447.29
    ethylene glycol 7.66
    NMP 1848.73
    cyclohexane 9654.53
    DMSO 1118.01
    n-butyl acetate 8064.59
    n-octanol 955.61
    chloroform 3963.86
    n-propyl acetate 3328.54
    acetic acid 205.7
    dichloromethane 3941.74
    cyclohexanone 6452.63
    propylene glycol 37.52
    isopropyl acetate 3825.82
    DMAc 1413.68
    2-ethoxyethanol 594.56
    isopentanol 1517.45
    n-heptane 7617.18
    ethyl formate 704.63
    1,2-dichloroethane 3791.41
    n-hexanol 1669.53
    2-methoxyethanol 593.66
    isobutyl acetate 2796.14
    tetrachloromethane 1709.66
    n-pentyl acetate 3899.48
    transcutol 4409.14
    n-heptanol 1006.13
    ethylbenzene 1366.08
    MIBK 3282.22
    2-propoxyethanol 1521.81
    tert-butanol 1642.44
    MTBE 5442.76
    2-butoxyethanol 1210.32
    propionic acid 353.93
    o-xylene 1595.36
    formic acid 8.76
    diethyl ether 5529.0
    m-xylene 1574.98
    p-xylene 1854.16
    chlorobenzene 1843.42
    dimethyl carbonate 360.32
    n-octane 1651.13
    formamide 23.31
    cyclopentanone 4643.02
    2-pentanone 3826.15
    anisole 1761.31
    cyclopentyl methyl ether 6967.77
    gamma-butyrolactone 2914.97
    1-methoxy-2-propanol 883.19
    pyridine 2508.61
    3-pentanone 3063.37
    furfural 1428.1
    n-dodecane 504.65
    diethylene glycol 251.3
    diisopropyl ether 3786.75
    tert-amyl alcohol 1786.72
    acetylacetone 2802.73
    n-hexadecane 633.55
    acetophenone 1521.51
    methyl propionate 1667.28
    isopentyl acetate 7726.05
    trichloroethylene 4243.26
    n-nonanol 1064.25
    cyclohexanol 2426.62
    benzyl alcohol 541.11
    2-ethylhexanol 3038.99
    isooctanol 1303.77
    dipropyl ether 12849.69
    1,2-dichlorobenzene 1910.48
    ethyl lactate 528.84
    propylene carbonate 1922.89
    n-methylformamide 182.19
    2-pentanol 1339.62
    n-pentane 2267.68
    1-propoxy-2-propanol 2796.46
    1-methoxy-2-propyl acetate 3965.8
    2-(2-methoxypropoxy) propanol 1151.28
    mesitylene 1480.76
    ε-caprolactone 4316.37
    p-cymene 2107.89
    epichlorohydrin 3701.36
    1,1,1-trichloroethane 5515.69
    2-aminoethanol 45.17
    morpholine-4-carbaldehyde 1661.78
    sulfolane 3527.56
    2,2,4-trimethylpentane 1124.44
    2-methyltetrahydrofuran 8032.86
    n-hexyl acetate 3477.64
    isooctane 1016.93
    2-(2-butoxyethoxy)ethanol 1530.27
    sec-butyl acetate 3429.81
    tert-butyl acetate 5385.35
    decalin 2112.45
    glycerin 50.07
    diglyme 4063.9
    acrylic acid 147.03
    isopropyl myristate 2020.17
    n-butyric acid 1451.19
    acetyl acetate 1675.11
    di(2-ethylhexyl) phthalate 665.3
    ethyl propionate 3097.25
    nitromethane 497.32
    1,2-diethoxyethane 6938.18
    benzonitrile 969.16
    trioctyl phosphate 718.37
    1-bromopropane 5040.75
    gamma-valerolactone 3579.81
    n-decanol 771.31
    triethyl phosphate 2082.51
    4-methyl-2-pentanol 1182.24
    propionitrile 760.33
    vinylene carbonate 1005.49
    1,1,2-trichlorotrifluoroethane 1222.83
    DMS 1250.25
    cumene 1080.98
    2-octanol 1042.02
    2-hexanone 3205.21
    octyl acetate 1781.65
    limonene 4898.62
    1,2-dimethoxyethane 3336.49
    ethyl orthosilicate 2494.01
    tributyl phosphate 1001.7
    diacetone alcohol 2348.52
    N,N-dimethylaniline 1416.21
    acrylonitrile 431.24
    aniline 1101.58
    1,3-propanediol 180.93
    bromobenzene 2709.15
    dibromomethane 3634.17
    1,1,2,2-tetrachloroethane 4729.31
    2-methyl-cyclohexyl acetate 3731.16
    tetrabutyl urea 1445.73
    diisobutyl methanol 3000.28
    2-phenylethanol 903.37
    styrene 1478.56
    dioctyl adipate 1935.57
    dimethyl sulfate 603.14
    ethyl butyrate 7564.47
    methyl lactate 295.28
    butyl lactate 1332.12
    diethyl carbonate 3321.46
    propanediol butyl ether 535.3
    triethyl orthoformate 5620.69
    p-tert-butyltoluene 2161.24
    methyl 4-tert-butylbenzoate 1715.05
    morpholine 3868.08
    tert-butylamine 1909.84
    n-dodecanol 638.49
    dimethoxymethane 1398.38
    ethylene carbonate 1319.82
    cyrene 689.39
    2-ethoxyethyl acetate 2779.37
    2-ethylhexyl acetate 7170.19
    1,2,4-trichlorobenzene 1965.88
    4-methylpyridine 2717.77
    dibutyl ether 7541.1
    2,6-dimethyl-4-heptanol 3000.28
    DEF 3295.88
    dimethyl isosorbide 2604.61
    tetrachloroethylene 2658.58
    eugenol 866.31
    triacetin 2074.2
    span 80 1140.82
    1,4-butanediol 64.31
    1,1-dichloroethane 3696.31
    2-methyl-1-pentanol 1095.74
    methyl formate 156.38
    2-methyl-1-butanol 1179.05
    n-decane 1251.5
    butyronitrile 1495.0
    3,7-dimethyl-1-octanol 1800.45
    1-chlorooctane 2626.57
    1-chlorotetradecane 899.21
    n-nonane 1492.6
    undecane 732.4
    tert-butylcyclohexane 1714.9
    cyclooctane 3343.55
    cyclopentanol 1633.34
    tetrahydropyran 9735.23
    tert-amyl methyl ether 4177.07
    2,5,8-trioxanonane 2111.2
    1-hexene 3861.79
    2-isopropoxyethanol 780.27
    2,2,2-trifluoroethanol 65.12
    methyl butyrate 3706.11

    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