2,5-Undecadien-1-ol

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  • Identifiers

    CAS number
    91212-78-1

    Molecular formula
    C11H20O

    SMILES
    CCCCCC=CCC=CCO

  • Odor profile

    Fragrance
    Fatty 80.46%
    Waxy 63.87%
    Citrus 54.52%
    Oily 46.89%
    Fruity 46.43%
    Melon 44.48%
    Green 43.11%
    Cucumber 38.96%
    Fresh 36.82%
    Aldehydic 36.79%

     

    Flavor
    Melon 47.57%
    Waxy 44.28%
    Fatty 42.82%
    Green 41.54%
    Cucumber 40.67%
    Citrus 39.76%
    Fresh 36.08%
    Orange 27.01%
    Oily 25.08%
    Wax 24.71%

     

    Odor impact est.
    High

  • Properties

    XLogP3-AA
    3.4

    pKa est.
    8.27 (weak base)

    Molecular weight
    168.28 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    246°C

    Flash point

    • 126.07 ˚C est.

  • Synonyms

    • 2,5-Undecadien-1-ol
    • DTXSID301344573
    • 91212-78-1

  • Applications

    2,5-Undecadien-1-ol (CAS 91212-78-1) is primarily used as a fragrance intermediate and odorant in perfumery, where its conjugated diene structure can contribute to distinctive scent profiles and may act as a fixative in formulations. It is also employed in cosmetics and personal care products as a fragrance ingredient or fragrance modifier, helping to build long-lasting notes. In household products, it can be added as a fragrance component in cleaners and air fresheners to impart desirable aroma. As a chemical building block, it is often used as an intermediate to prepare ester or ether derivatives for use in coatings, inks, or polymeric materials, and may serve as a starting material in industrial manufacturing when synthesizing functionalized compounds. It may be evaluated for use in other specialty applications, subject to formulation limits and local regulations.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 10761.72
    methanol 7715.82
    isopropanol 9641.21
    water 0.07
    ethyl acetate 5880.32
    n-propanol 8904.64
    acetone 7761.47
    n-butanol 8154.12
    acetonitrile 3288.91
    DMF 2835.22
    toluene 1340.18
    isobutanol 5443.53
    1,4-dioxane 5814.88
    methyl acetate 3045.08
    THF 10140.72
    2-butanone 5431.48
    n-pentanol 4621.96
    sec-butanol 7034.53
    n-hexane 1996.56
    ethylene glycol 462.03
    NMP 1226.6
    cyclohexane 2077.08
    DMSO 7246.7
    n-butyl acetate 3881.91
    n-octanol 879.08
    chloroform 3878.44
    n-propyl acetate 3179.68
    acetic acid 2041.74
    dichloromethane 4419.2
    cyclohexanone 4594.44
    propylene glycol 1200.71
    isopropyl acetate 2740.92
    DMAc 1384.09
    2-ethoxyethanol 3336.04
    isopentanol 5427.68
    n-heptane 982.16
    ethyl formate 1605.52
    1,2-dichloroethane 4121.03
    n-hexanol 4301.2
    2-methoxyethanol 6254.16
    isobutyl acetate 1413.46
    tetrachloromethane 804.9
    n-pentyl acetate 1261.98
    transcutol 7595.44
    n-heptanol 1126.7
    ethylbenzene 530.92
    MIBK 2390.01
    2-propoxyethanol 4001.62
    tert-butanol 8812.81
    MTBE 6995.31
    2-butoxyethanol 1562.32
    propionic acid 2117.03
    o-xylene 506.91
    formic acid 317.58
    diethyl ether 10852.55
    m-xylene 743.5
    p-xylene 517.0
    chlorobenzene 973.11
    dimethyl carbonate 402.3
    n-octane 214.23
    formamide 601.58
    cyclopentanone 3896.37
    2-pentanone 5838.34
    anisole 924.89
    cyclopentyl methyl ether 4943.92
    gamma-butyrolactone 2977.86
    1-methoxy-2-propanol 5067.32
    pyridine 3260.52
    3-pentanone 2727.01
    furfural 1443.65
    n-dodecane 79.52
    diethylene glycol 1622.4
    diisopropyl ether 2214.27
    tert-amyl alcohol 5056.21
    acetylacetone 2549.85
    n-hexadecane 90.19
    acetophenone 650.81
    methyl propionate 2665.51
    isopentyl acetate 2490.76
    trichloroethylene 4384.81
    n-nonanol 710.04
    cyclohexanol 4116.83
    benzyl alcohol 846.1
    2-ethylhexanol 2076.15
    isooctanol 864.72
    dipropyl ether 4638.44
    1,2-dichlorobenzene 653.12
    ethyl lactate 563.14
    propylene carbonate 1242.51
    n-methylformamide 1771.68
    2-pentanol 6059.28
    n-pentane 1807.42
    1-propoxy-2-propanol 3485.35
    1-methoxy-2-propyl acetate 1912.44
    2-(2-methoxypropoxy) propanol 739.21
    mesitylene 437.66
    ε-caprolactone 2856.64
    p-cymene 361.0
    epichlorohydrin 4759.07
    1,1,1-trichloroethane 2748.79
    2-aminoethanol 1768.74
    morpholine-4-carbaldehyde 1881.85
    sulfolane 2569.38
    2,2,4-trimethylpentane 363.63
    2-methyltetrahydrofuran 8214.71
    n-hexyl acetate 1420.08
    isooctane 363.77
    2-(2-butoxyethoxy)ethanol 1463.5
    sec-butyl acetate 1683.24
    tert-butyl acetate 2280.79
    decalin 377.64
    glycerin 866.94
    diglyme 2994.3
    acrylic acid 896.9
    isopropyl myristate 414.58
    n-butyric acid 4698.49
    acetyl acetate 1218.75
    di(2-ethylhexyl) phthalate 245.15
    ethyl propionate 2052.44
    nitromethane 2705.49
    1,2-diethoxyethane 4257.19
    benzonitrile 903.67
    trioctyl phosphate 236.52
    1-bromopropane 4629.49
    gamma-valerolactone 3833.89
    n-decanol 478.36
    triethyl phosphate 405.78
    4-methyl-2-pentanol 2001.75
    propionitrile 3370.2
    vinylene carbonate 840.65
    1,1,2-trichlorotrifluoroethane 1968.35
    DMS 523.49
    cumene 295.84
    2-octanol 673.84
    2-hexanone 3303.25
    octyl acetate 491.05
    limonene 873.13
    1,2-dimethoxyethane 5418.73
    ethyl orthosilicate 510.39
    tributyl phosphate 313.73
    diacetone alcohol 2183.94
    N,N-dimethylaniline 471.75
    acrylonitrile 2225.09
    aniline 1547.91
    1,3-propanediol 3082.48
    bromobenzene 1020.46
    dibromomethane 3884.24
    1,1,2,2-tetrachloroethane 3690.64
    2-methyl-cyclohexyl acetate 871.73
    tetrabutyl urea 379.85
    diisobutyl methanol 1058.26
    2-phenylethanol 927.04
    styrene 740.94
    dioctyl adipate 486.43
    dimethyl sulfate 468.03
    ethyl butyrate 2322.65
    methyl lactate 662.64
    butyl lactate 691.3
    diethyl carbonate 845.48
    propanediol butyl ether 1011.07
    triethyl orthoformate 1145.22
    p-tert-butyltoluene 355.06
    methyl 4-tert-butylbenzoate 425.84
    morpholine 8811.21
    tert-butylamine 6417.88
    n-dodecanol 346.71
    dimethoxymethane 3691.32
    ethylene carbonate 968.34
    cyrene 482.1
    2-ethoxyethyl acetate 1356.01
    2-ethylhexyl acetate 1776.14
    1,2,4-trichlorobenzene 679.66
    4-methylpyridine 2714.9
    dibutyl ether 2411.31
    2,6-dimethyl-4-heptanol 1058.26
    DEF 3389.1
    dimethyl isosorbide 1066.74
    tetrachloroethylene 2546.13
    eugenol 433.22
    triacetin 659.99
    span 80 803.86
    1,4-butanediol 910.54
    1,1-dichloroethane 4662.04
    2-methyl-1-pentanol 2782.51
    methyl formate 891.96
    2-methyl-1-butanol 4580.32
    n-decane 189.67
    butyronitrile 4838.66
    3,7-dimethyl-1-octanol 936.25
    1-chlorooctane 623.9
    1-chlorotetradecane 175.81
    n-nonane 238.8
    undecane 113.74
    tert-butylcyclohexane 365.11
    cyclooctane 544.99
    cyclopentanol 3527.5
    tetrahydropyran 11497.76
    tert-amyl methyl ether 3282.24
    2,5,8-trioxanonane 1324.36
    1-hexene 4834.54
    2-isopropoxyethanol 2124.65
    2,2,2-trifluoroethanol 256.9
    methyl butyrate 2968.5

    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