5-Butyl-5-ethyldihydrofuran-2(3H)-one

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  • Identifiers

    CAS number
    68188-98-7

    Molecular formula
    C10H18O2

    SMILES
    CCCCC1(CCC(=O)O1)CC

  • Odor profile

    Fragrance
    Coconut 61.84%
    Lactonic 61.53%
    Creamy 52.71%
    Fatty 49.77%
    Oily 43.25%
    Milky 42.0%
    Dairy 41.18%
    Spicy 39.76%
    Sweet 39.19%
    Buttery 39.11%

     

    Flavor
    Sweet 66.27%
    Coconut 62.28%
    Fruity 53.43%
    Peach 49.29%
    Creamy 46.33%
    Fatty 42.69%
    Fruit 37.97%
    Herbal 37.62%
    Tonka 37.12%
    Waxy 36.32%

     

    Odor impact est.
    Medium

  • Properties

    XLogP3-AA
    2.8

    pKa est.
    9.05 (weak base)

    Molecular weight
    170.25 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Slow

    Boiling point est.
    268°C

    Flash point

    • 97.81 ˚C est.

  • Synonyms

    • 5-Butyl-5-ethyldihydrofuran-2(3H)-one
    • 68188-98-7
    • 5-butyl-5-ethyloxolan-2-one
    • 2(3H)-Furanone, 5-butyl-5-ethyldihydro-
    • EINECS 269-171-9
    • DTXSID4052398
    • 4-Ethyl-4-octanolide
    • 4-ethyl-gamma-octalactone
    • SCHEMBL3101853
    • DTXCID8030970
    • AS-77436
    • NS00012442
    • 269-171-9

  • Applications

    5-Butyl-5-ethyldihydrofuran-2(3H)-one, CAS 68188-98-7, is primarily used as a fragrance ingredient and a synthetic intermediate in industrial formulations. In fragrance and cosmetics, it can serve as an odorant or a light fixative and may be incorporated into personal care and household products to shape aroma profiles; as a gamma-lactone, it is also evaluated as a monomer or building block for specialty polymers and polyesters via ring-opening polymerization. In industrial manufacturing, it can function as an intermediate for specialty chemicals and aroma-related compounds, with use and limits depending on local regulations and formulation constraints.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 2245.03
    methanol 2932.34
    isopropanol 2109.07
    water 1.14
    ethyl acetate 1387.87
    n-propanol 1840.37
    acetone 1999.88
    n-butanol 1601.33
    acetonitrile 1851.98
    DMF 2100.39
    toluene 1048.34
    isobutanol 1529.65
    1,4-dioxane 2284.42
    methyl acetate 1398.91
    THF 2759.13
    2-butanone 1758.76
    n-pentanol 1171.75
    sec-butanol 1714.4
    n-hexane 199.67
    ethylene glycol 340.99
    NMP 1695.2
    cyclohexane 341.37
    DMSO 2031.28
    n-butyl acetate 1400.12
    n-octanol 614.38
    chloroform 5564.64
    n-propyl acetate 877.69
    acetic acid 1062.19
    dichloromethane 4164.21
    cyclohexanone 2451.67
    propylene glycol 556.3
    isopropyl acetate 986.44
    DMAc 1516.25
    2-ethoxyethanol 1035.6
    isopentanol 1450.33
    n-heptane 89.47
    ethyl formate 1030.42
    1,2-dichloroethane 2090.31
    n-hexanol 1341.87
    2-methoxyethanol 1620.35
    isobutyl acetate 680.39
    tetrachloromethane 719.44
    n-pentyl acetate 796.4
    transcutol 2724.17
    n-heptanol 520.29
    ethylbenzene 560.02
    MIBK 837.45
    2-propoxyethanol 1538.67
    tert-butanol 2129.87
    MTBE 1812.89
    2-butoxyethanol 753.71
    propionic acid 1154.08
    o-xylene 583.77
    formic acid 335.18
    diethyl ether 1439.95
    m-xylene 635.07
    p-xylene 763.08
    chlorobenzene 1647.4
    dimethyl carbonate 418.92
    n-octane 51.03
    formamide 495.13
    cyclopentanone 2208.59
    2-pentanone 1332.15
    anisole 1053.75
    cyclopentyl methyl ether 1301.19
    gamma-butyrolactone 2218.49
    1-methoxy-2-propanol 1305.43
    pyridine 2378.52
    3-pentanone 907.32
    furfural 1987.08
    n-dodecane 51.56
    diethylene glycol 863.55
    diisopropyl ether 451.03
    tert-amyl alcohol 1558.33
    acetylacetone 1277.25
    n-hexadecane 60.94
    acetophenone 887.09
    methyl propionate 984.18
    isopentyl acetate 1229.58
    trichloroethylene 3748.01
    n-nonanol 508.33
    cyclohexanol 1457.51
    benzyl alcohol 869.48
    2-ethylhexanol 674.38
    isooctanol 429.51
    dipropyl ether 599.89
    1,2-dichlorobenzene 1311.09
    ethyl lactate 389.6
    propylene carbonate 1363.63
    n-methylformamide 1194.67
    2-pentanol 1117.36
    n-pentane 173.75
    1-propoxy-2-propanol 1037.39
    1-methoxy-2-propyl acetate 944.53
    2-(2-methoxypropoxy) propanol 728.61
    mesitylene 408.27
    ε-caprolactone 1910.03
    p-cymene 326.39
    epichlorohydrin 2368.27
    1,1,1-trichloroethane 2224.59
    2-aminoethanol 805.58
    morpholine-4-carbaldehyde 1708.07
    sulfolane 2325.12
    2,2,4-trimethylpentane 114.51
    2-methyltetrahydrofuran 2188.25
    n-hexyl acetate 1210.82
    isooctane 91.33
    2-(2-butoxyethoxy)ethanol 1000.35
    sec-butyl acetate 660.8
    tert-butyl acetate 916.19
    decalin 165.53
    glycerin 568.11
    diglyme 1563.5
    acrylic acid 861.43
    isopropyl myristate 400.13
    n-butyric acid 1608.21
    acetyl acetate 820.45
    di(2-ethylhexyl) phthalate 398.95
    ethyl propionate 732.07
    nitromethane 1613.82
    1,2-diethoxyethane 1036.02
    benzonitrile 1490.42
    trioctyl phosphate 271.79
    1-bromopropane 1716.38
    gamma-valerolactone 2289.96
    n-decanol 346.23
    triethyl phosphate 295.81
    4-methyl-2-pentanol 599.98
    propionitrile 1804.77
    vinylene carbonate 1354.66
    1,1,2-trichlorotrifluoroethane 1407.58
    DMS 745.08
    cumene 397.62
    2-octanol 423.56
    2-hexanone 1037.16
    octyl acetate 517.35
    limonene 475.57
    1,2-dimethoxyethane 1804.66
    ethyl orthosilicate 281.97
    tributyl phosphate 363.37
    diacetone alcohol 877.22
    N,N-dimethylaniline 652.58
    acrylonitrile 1822.61
    aniline 1190.58
    1,3-propanediol 993.66
    bromobenzene 1911.39
    dibromomethane 2957.11
    1,1,2,2-tetrachloroethane 3093.29
    2-methyl-cyclohexyl acetate 598.17
    tetrabutyl urea 428.95
    diisobutyl methanol 336.55
    2-phenylethanol 875.09
    styrene 781.75
    dioctyl adipate 533.72
    dimethyl sulfate 602.69
    ethyl butyrate 721.21
    methyl lactate 468.09
    butyl lactate 579.59
    diethyl carbonate 474.03
    propanediol butyl ether 807.35
    triethyl orthoformate 441.75
    p-tert-butyltoluene 309.26
    methyl 4-tert-butylbenzoate 693.83
    morpholine 2615.56
    tert-butylamine 1436.57
    n-dodecanol 245.14
    dimethoxymethane 1172.63
    ethylene carbonate 1128.34
    cyrene 554.25
    2-ethoxyethyl acetate 864.1
    2-ethylhexyl acetate 904.49
    1,2,4-trichlorobenzene 1477.22
    4-methylpyridine 2354.02
    dibutyl ether 661.26
    2,6-dimethyl-4-heptanol 336.55
    DEF 1247.0
    dimethyl isosorbide 1047.48
    tetrachloroethylene 1892.3
    eugenol 696.44
    triacetin 832.81
    span 80 702.26
    1,4-butanediol 473.86
    1,1-dichloroethane 2807.16
    2-methyl-1-pentanol 1062.71
    methyl formate 838.9
    2-methyl-1-butanol 1310.06
    n-decane 90.01
    butyronitrile 1762.2
    3,7-dimethyl-1-octanol 628.49
    1-chlorooctane 428.48
    1-chlorotetradecane 151.1
    n-nonane 88.48
    undecane 66.2
    tert-butylcyclohexane 151.91
    cyclooctane 92.93
    cyclopentanol 1511.96
    tetrahydropyran 2466.92
    tert-amyl methyl ether 1013.35
    2,5,8-trioxanonane 1056.67
    1-hexene 810.2
    2-isopropoxyethanol 816.12
    2,2,2-trifluoroethanol 320.72
    methyl butyrate 1072.62

    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