2-Methyleicosane

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  • Identifiers

    CAS number
    1560-84-5

    Molecular formula
    C21H44

    SMILES
    CCCCCCCCCCCCCCCCCCC(C)C

    Safety labels

  • Odor profile

    Fragrance
    Waxy 83.49%
    Fatty 37.01%
    Oily 32.6%
    Odorless 23.04%
    Fishy 19.49%
    Meaty 16.88%
    Sweet 16.23%
    Savory 15.04%
    Gassy 14.82%
    Burnt 14.44%

     

    Flavor
    Alkane 57.82%
    Waxy 45.74%
    Bland 26.61%
    Mild 24.5%
    Delicate 22.22%
    Slightly waxy 21.78%
    Incense 20.05%
    Citrus peel 19.93%
    Grapefruit peel 19.6%
    Diterpene 19.53%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    11.3

    pKa est.
    8.71 (weak base)

    Molecular weight
    296.6 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    356°C

    Flash point

    • 163.55 ˚C est.

  • Synonyms

    • 2-Methyleicosane
    • 1560-84-5
    • RefChem:476042
    • 680-582-6
    • 2-Methylicosane
    • Isoheneicosane
    • Eicosane, 2-methyl-
    • 52845-08-6
    • 94A1IJ5F09
    • isohenicosane
    • 2-Methylicosane #
    • Eicosane, 2-methyl
    • SCHEMBL101412
    • UNII-94A1IJ5F09
    • QSPL 048
    • SCHEMBL1443584
    • SCHEMBL4218789
    • SCHEMBL4218791
    • SCHEMBL5985370
    • SCHEMBL6984187
    • SCHEMBL7923014
    • SCHEMBL7925024
    • CHEBI:132293
    • DTXSID301361171
    • 52845-08-6

  • Applications

    2-Methyleicosane (CAS 1560-84-5) is a high-molecular-weight, branched alkane used primarily as a nonpolar solvent and processing aid in industrial manufacturing. It serves as a diluent and carrier in coatings, inks, and adhesives, helping adjust viscosity and evaporation characteristics. It can function as a component of wax blends and as a lubricant/plasticizer in polymer formulations and specialty lubricants. In addition, it may be encountered as a constituent in cosmetic base oils to improve texture and slip, and as a reference hydrocarbon in analytical calibrations, subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 41.52
    methanol 14.61
    isopropanol 87.67
    water 0.0
    ethyl acetate 934.57
    n-propanol 94.98
    acetone 376.6
    n-butanol 181.73
    acetonitrile 66.14
    DMF 254.75
    toluene 696.13
    isobutanol 139.25
    1,4-dioxane 967.88
    methyl acetate 350.63
    THF 2796.45
    2-butanone 623.79
    n-pentanol 141.27
    sec-butanol 183.04
    n-hexane 829.95
    ethylene glycol 1.73
    NMP 875.74
    cyclohexane 3210.47
    DMSO 316.38
    n-butyl acetate 2286.04
    n-octanol 292.95
    chloroform 1549.61
    n-propyl acetate 1058.68
    acetic acid 57.35
    dichloromethane 1412.69
    cyclohexanone 2168.52
    propylene glycol 8.69
    isopropyl acetate 1245.96
    DMAc 601.01
    2-ethoxyethanol 152.37
    isopentanol 310.87
    n-heptane 2357.81
    ethyl formate 193.97
    1,2-dichloroethane 1212.76
    n-hexanol 338.28
    2-methoxyethanol 139.46
    isobutyl acetate 998.06
    tetrachloromethane 698.21
    n-pentyl acetate 1465.69
    transcutol 1403.09
    n-heptanol 282.84
    ethylbenzene 518.22
    MIBK 1136.22
    2-propoxyethanol 384.49
    tert-butanol 321.29
    MTBE 1300.24
    2-butoxyethanol 379.33
    propionic acid 99.77
    o-xylene 630.36
    formic acid 3.16
    diethyl ether 1172.98
    m-xylene 581.43
    p-xylene 746.6
    chlorobenzene 683.07
    dimethyl carbonate 137.49
    n-octane 541.37
    formamide 7.67
    cyclopentanone 1731.31
    2-pentanone 1021.24
    anisole 686.46
    cyclopentyl methyl ether 2494.7
    gamma-butyrolactone 1182.94
    1-methoxy-2-propanol 237.74
    pyridine 736.59
    3-pentanone 960.12
    furfural 568.81
    n-dodecane 172.55
    diethylene glycol 66.91
    diisopropyl ether 1107.16
    tert-amyl alcohol 429.19
    acetylacetone 989.24
    n-hexadecane 221.95
    acetophenone 674.15
    methyl propionate 510.87
    isopentyl acetate 2384.1
    trichloroethylene 1629.94
    n-nonanol 346.56
    cyclohexanol 663.43
    benzyl alcohol 182.62
    2-ethylhexanol 819.9
    isooctanol 395.36
    dipropyl ether 3811.17
    1,2-dichlorobenzene 815.47
    ethyl lactate 207.28
    propylene carbonate 812.15
    n-methylformamide 47.02
    2-pentanol 291.14
    n-pentane 502.4
    1-propoxy-2-propanol 805.33
    1-methoxy-2-propyl acetate 1473.05
    2-(2-methoxypropoxy) propanol 471.79
    mesitylene 600.84
    ε-caprolactone 1548.2
    p-cymene 867.99
    epichlorohydrin 1298.07
    1,1,1-trichloroethane 2124.7
    2-aminoethanol 9.99
    morpholine-4-carbaldehyde 648.73
    sulfolane 1696.81
    2,2,4-trimethylpentane 380.95
    2-methyltetrahydrofuran 2548.59
    n-hexyl acetate 1313.96
    isooctane 320.88
    2-(2-butoxyethoxy)ethanol 546.22
    sec-butyl acetate 1231.45
    tert-butyl acetate 1990.81
    decalin 820.8
    glycerin 13.95
    diglyme 1585.04
    acrylic acid 47.74
    isopropyl myristate 857.7
    n-butyric acid 393.23
    acetyl acetate 579.68
    di(2-ethylhexyl) phthalate 293.66
    ethyl propionate 1091.85
    nitromethane 140.97
    1,2-diethoxyethane 2056.87
    benzonitrile 306.86
    trioctyl phosphate 296.45
    1-bromopropane 1447.82
    gamma-valerolactone 1313.12
    n-decanol 250.0
    triethyl phosphate 997.8
    4-methyl-2-pentanol 308.15
    propionitrile 164.01
    vinylene carbonate 407.58
    1,1,2-trichlorotrifluoroethane 495.56
    DMS 534.77
    cumene 447.99
    2-octanol 316.54
    2-hexanone 971.03
    octyl acetate 735.82
    limonene 1886.08
    1,2-dimethoxyethane 949.37
    ethyl orthosilicate 1152.77
    tributyl phosphate 423.22
    diacetone alcohol 848.85
    N,N-dimethylaniline 603.96
    acrylonitrile 100.78
    aniline 323.6
    1,3-propanediol 39.88
    bromobenzene 1062.62
    dibromomethane 1226.67
    1,1,2,2-tetrachloroethane 1903.93
    2-methyl-cyclohexyl acetate 1608.89
    tetrabutyl urea 628.61
    diisobutyl methanol 991.5
    2-phenylethanol 290.03
    styrene 527.7
    dioctyl adipate 895.47
    dimethyl sulfate 282.11
    ethyl butyrate 2635.97
    methyl lactate 108.62
    butyl lactate 538.3
    diethyl carbonate 1246.68
    propanediol butyl ether 176.85
    triethyl orthoformate 2263.27
    p-tert-butyltoluene 900.66
    methyl 4-tert-butylbenzoate 855.53
    morpholine 985.99
    tert-butylamine 381.01
    n-dodecanol 211.09
    dimethoxymethane 405.24
    ethylene carbonate 506.32
    cyrene 355.92
    2-ethoxyethyl acetate 1062.04
    2-ethylhexyl acetate 2319.87
    1,2,4-trichlorobenzene 870.2
    4-methylpyridine 815.48
    dibutyl ether 2349.05
    2,6-dimethyl-4-heptanol 991.5
    DEF 1067.8
    dimethyl isosorbide 1329.29
    tetrachloroethylene 1078.75
    eugenol 387.84
    triacetin 1001.73
    span 80 471.77
    1,4-butanediol 15.71
    1,1-dichloroethane 1186.3
    2-methyl-1-pentanol 266.12
    methyl formate 46.78
    2-methyl-1-butanol 255.57
    n-decane 437.12
    butyronitrile 308.95
    3,7-dimethyl-1-octanol 578.26
    1-chlorooctane 944.71
    1-chlorotetradecane 343.68
    n-nonane 495.74
    undecane 254.26
    tert-butylcyclohexane 648.53
    cyclooctane 1202.31
    cyclopentanol 477.72
    tetrahydropyran 2586.25
    tert-amyl methyl ether 1294.39
    2,5,8-trioxanonane 905.76
    1-hexene 854.05
    2-isopropoxyethanol 222.22
    2,2,2-trifluoroethanol 26.44
    methyl butyrate 1259.99

    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