1-Eicosanol

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  • Identifiers

    CAS number
    629-96-9

    Molecular formula
    C20H42O

    SMILES
    CCCCCCCCCCCCCCCCCCCCO

    Safety labels

    Irritant
    Irritant

    Retention indicies (RI)

    • Carbowax: 2717.0

  • Odor profile

    Waxy 77.72%
    Fatty 57.81%
    Oily 51.31%
    Odorless 29.53%
    Clean 26.06%
    Sweet 23.36%
    Fruity 22.61%
    Orris 21.62%
    Soapy 19.85%
    Floral 19.84%

    Scent© AI

  • Properties

    XLogP3-AA
    9.5

    Molecular weight
    298.5 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Melting point expt.

    • 66.1 °C

    Boiling point

    • 309 °C at 750 mm Hg; 222 °C at 3 mm Hg

    Flash point est.
    183.23 ˚C

    Flash point expt.

    • 195 °C

    Solubility expt.

    • Very soluble in acetone; soluble in petroleum ether; slightly soluble in ethanol, chloroform
    • Soluble in hot benzene

  • Synonyms

    • 1-EICOSANOL
    • Icosan-1-ol
    • 629-96-9
    • Arachidyl alcohol
    • Arachidic alcohol
    • Arachic alcohol
    • Eicosyl alcohol
    • EICOSANOL
    • N-Eicosanol
    • eicosan-1-ol
    • 1-Icosanol
    • N-1-Eicosanol
    • Pri-N-eicosyl alcohol
    • NSC 120887
    • HSDB 5731
    • 1QR1QRA9BU
    • Arachinyl alcohol
    • 28679-05-2
    • EINECS 211-119-4
    • MFCD00002938
    • Eicosanol-(1)
    • CHEBI:75627
    • AI3-36485
    • NSC-120887
    • 1-EICOSANOL [HSDB]
    • DTXSID0027272
    • EC 211-119-4
    • ARACHIDYL ALCOHOL [USP-RS]
    • ARACHIDYL ALCOHOL (USP-RS)
    • UNII-1QR1QRA9BU
    • nEicosanol
    • arachyl alcohol
    • a-eicosanol
    • n1Eicosanol
    • Icosan1ol
    • 1-Ecosanol
    • 1-Prydroxyeicosane
    • n-eicosan-1-ol
    • prinEicosyl alcohol
    • N-Eicosanol (d41)
    • 1-Eicosanol, 98%
    • 1-Eicosanol (Standard)
    • SCHEMBL108302
    • CHEMBL451717
    • DTXCID007272
    • QSPL 202
    • 1-icosanol (ACD/Name 4.0)
    • ARACHIDYL ALCOHOL [INCI]
    • HY-W004263R
    • ZNA55389
    • LMFA05000221
    • NSC120887
    • AKOS015839826
    • CS-W004263
    • FA68034
    • HY-W004263
    • 1-Eicosanol, technical, >=90% (GC)
    • 1-Eicosanol, purum, >=97.0% (GC)
    • BS-51501
    • DB-250389
    • E0004
    • NS00004340
    • H10676
    • Q4783532
    • ABA1F4B5-39FD-4206-A0A7-70D182257EEE
    • Arachidyl alcohol, United States Pharmacopeia (USP) Reference Standard
    • 211-119-4

  • Applications

    1-Eicosanol (arachidyl alcohol, CAS 629-96-9) is a C20 linear fatty alcohol with a waxy solid form, used as an emollient, structurant, viscosity/consistency modifier and co-emulsifier in cosmetics and personal care (creams, lotions, lipsticks, sunscreens) to improve skin feel and spreadability; as an intermediate to produce nonionic and anionic surfactants (ethoxylates, ether sulfates) and eicosyl esters employed as emulsifiers, wetting agents, detergents and lubricants; as a lubricant and processing aid in plastics and rubber (friction reduction, mold release), and as a softener/finishing agent in textiles and leather; as a component of technical waxes and polishes; as a medium-temperature phase-change material due to its melting enthalpy for thermal energy storage and buffering; as a hydrophobizing surface modifier for inorganic fillers or pigments; and in R&D/analytical work as a reference standard or for studying crystallization behavior of long-chain fatty alcohols.

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 22.68
    methanol 15.3
    isopropanol 41.89
    water 0.01
    ethyl acetate 212.22
    n-propanol 42.73
    acetone 99.21
    n-butanol 69.1
    acetonitrile 27.39
    DMF 125.12
    toluene 69.44
    isobutanol 52.96
    1,4-dioxane 226.63
    methyl acetate 95.37
    THF 777.92
    2-butanone 149.7
    n-pentanol 50.98
    sec-butanol 63.88
    n-hexane 63.76
    ethylene glycol 1.52
    NMP 390.85
    cyclohexane 325.87
    DMSO 230.01
    n-butyl acetate 420.32
    n-octanol 91.11
    chloroform 492.83
    n-propyl acetate 311.54
    acetic acid 39.56
    dichloromethane 454.12
    cyclohexanone 583.67
    propylene glycol 6.83
    isopropyl acetate 267.03
    DMAc 240.62
    2-ethoxyethanol 93.42
    isopentanol 107.56
    n-heptane 157.7
    ethyl formate 74.85
    1,2-dichloroethane 350.56
    n-hexanol 76.53
    2-methoxyethanol 91.87
    isobutyl acetate 245.4
    tetrachloromethane 184.79
    n-pentyl acetate 495.41
    transcutol 673.51
    n-heptanol 92.44
    ethylbenzene 74.84
    MIBK 260.09
    2-propoxyethanol 141.19
    tert-butanol 123.65
    MTBE 227.62
    2-butoxyethanol 200.33
    propionic acid 52.67
    o-xylene 83.05
    formic acid 4.47
    diethyl ether 177.59
    m-xylene 71.77
    p-xylene 109.69
    chlorobenzene 132.15
    dimethyl carbonate 39.8
    n-octane 48.21
    formamide 10.33
    cyclopentanone 547.9
    2-pentanone 221.8
    anisole 145.11
    cyclopentyl methyl ether 466.02
    gamma-butyrolactone 455.33
    1-methoxy-2-propanol 129.67
    pyridine 188.46
    3-pentanone 182.6
    furfural 274.89
    n-dodecane 18.06
    diethylene glycol 37.66
    diisopropyl ether 146.34
    tert-amyl alcohol 135.35
    acetylacetone 252.42
    n-hexadecane 22.98
    acetophenone 190.96
    methyl propionate 132.07
    isopentyl acetate 430.55
    trichloroethylene 520.56
    n-nonanol 99.89
    cyclohexanol 194.42
    benzyl alcohol 65.41
    2-ethylhexanol 140.38
    isooctanol 120.27
    dipropyl ether 509.72
    1,2-dichlorobenzene 190.62
    ethyl lactate 97.25
    propylene carbonate 291.7
    n-methylformamide 33.05
    2-pentanol 81.87
    n-pentane 43.59
    1-propoxy-2-propanol 240.11
    1-methoxy-2-propyl acetate 321.56
    2-(2-methoxypropoxy) propanol 170.77
    mesitylene 79.13
    ε-caprolactone 491.46
    p-cymene 121.65
    epichlorohydrin 461.86
    1,1,1-trichloroethane 472.44
    2-aminoethanol 8.67
    morpholine-4-carbaldehyde 288.05
    sulfolane 858.53
    2,2,4-trimethylpentane 45.25
    2-methyltetrahydrofuran 531.09
    n-hexyl acetate 376.36
    isooctane 32.67
    2-(2-butoxyethoxy)ethanol 237.31
    sec-butyl acetate 285.49
    tert-butyl acetate 432.13
    decalin 85.13
    glycerin 13.52
    diglyme 622.36
    acrylic acid 28.71
    isopropyl myristate 166.1
    n-butyric acid 183.3
    acetyl acetate 136.17
    di(2-ethylhexyl) phthalate 86.97
    ethyl propionate 268.0
    nitromethane 93.8
    1,2-diethoxyethane 454.76
    benzonitrile 95.53
    trioctyl phosphate 83.15
    1-bromopropane 270.36
    gamma-valerolactone 583.66
    n-decanol 64.63
    triethyl phosphate 233.74
    4-methyl-2-pentanol 80.18
    propionitrile 51.61
    vinylene carbonate 172.37
    1,1,2-trichlorotrifluoroethane 287.21
    DMS 145.87
    cumene 71.28
    2-octanol 96.03
    2-hexanone 249.7
    octyl acetate 168.51
    limonene 250.1
    1,2-dimethoxyethane 356.22
    ethyl orthosilicate 253.79
    tributyl phosphate 118.25
    diacetone alcohol 295.14
    N,N-dimethylaniline 127.44
    acrylonitrile 40.69
    aniline 68.26
    1,3-propanediol 28.89
    bromobenzene 168.57
    dibromomethane 343.26
    1,1,2,2-tetrachloroethane 631.77
    2-methyl-cyclohexyl acetate 356.67
    tetrabutyl urea 175.4
    diisobutyl methanol 160.25
    2-phenylethanol 82.79
    styrene 79.02
    dioctyl adipate 232.04
    dimethyl sulfate 108.96
    ethyl butyrate 508.59
    methyl lactate 54.34
    butyl lactate 231.2
    diethyl carbonate 236.02
    propanediol butyl ether 114.98
    triethyl orthoformate 450.84
    p-tert-butyltoluene 117.86
    methyl 4-tert-butylbenzoate 272.26
    morpholine 316.21
    tert-butylamine 107.48
    n-dodecanol 46.92
    dimethoxymethane 135.45
    ethylene carbonate 190.94
    cyrene 177.28
    2-ethoxyethyl acetate 367.47
    2-ethylhexyl acetate 393.26
    1,2,4-trichlorobenzene 221.0
    4-methylpyridine 180.44
    dibutyl ether 408.42
    2,6-dimethyl-4-heptanol 160.25
    DEF 284.85
    dimethyl isosorbide 454.4
    tetrachloroethylene 394.07
    eugenol 168.03
    triacetin 330.71
    span 80 177.28
    1,4-butanediol 11.33
    1,1-dichloroethane 280.59
    2-methyl-1-pentanol 78.4
    methyl formate 26.73
    2-methyl-1-butanol 85.73
    n-decane 49.14
    butyronitrile 90.65
    3,7-dimethyl-1-octanol 134.7
    1-chlorooctane 166.95
    1-chlorotetradecane 50.6
    n-nonane 52.44
    undecane 27.15
    tert-butylcyclohexane 67.26
    cyclooctane 94.97
    cyclopentanol 167.86
    tetrahydropyran 512.31
    tert-amyl methyl ether 232.75
    2,5,8-trioxanonane 340.88
    1-hexene 99.27
    2-isopropoxyethanol 109.1
    2,2,2-trifluoroethanol 22.14
    methyl butyrate 360.72

    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

Botanical

Name CAS Botanical Proportion
Osmanthus absolute 68917-05-5 Osmanthus fragrans (Thunb.) Lour., fam. Oleaceae 1.5%
Rue (Malaysia) 1 8014-29-7 Ruta graveolens L., fam. Rutaceae 0.19%
Jasmine rose flower headspace (China) 2 Gardenia jasminoides Ellis var. fortuniana Lindl., fam. Rubiaceae 0.35%
Cilantro (Coriander leaf) 5a 8008-52-4 Coriandrum sativum L., fam. Apiaceae (Umbelliferae) 1.48%
Cilantro (Coriander leaf) 5b 8008-52-4 Coriandrum sativum L., fam. Apiaceae (Umbelliferae) 0.4%
Rocket leaf 1 Eruca sativa L., fam. Brassicaceae 0.06%
Angelica root (Brazil) 1b CO2 extract 8015-64-3 Angelica archangelica L., fam. Apiaceae (Umbelliferae) 1.1%