Butyl ethyl sulfide

Overview IFRA Request a quote

  • Identifiers

    CAS number
    638-46-0

    Molecular formula
    C6H14S

    SMILES
    CCCCSCC

    Safety labels

    Flammable
    Flammable

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Sulfurous 79.66%
    Vegetable 69.85%
    Onion 65.9%
    Green 65.42%
    Alliaceous 64.9%
    Meaty 62.95%
    Garlic 60.01%
    Savory 54.44%
    Tropical 39.89%
    Cooked 39.78%

     

    Flavor
    Sulfurous 54.38%
    Green 51.32%
    Onion 50.58%
    Garlic 40.4%
    Herbal 36.66%
    Sulfury 35.91%
    Meaty 29.83%
    Burnt 29.47%
    Vegetable 28.06%
    Fishy 27.56%

     

    Odor impact est.
    High

  • Properties

    XLogP3-AA
    2.5

    pKa est.
    6.59 (neutral)

    Molecular weight
    118.24 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra fast

    Boiling point est.
    142°C

    Flash point

    • 32.99 ˚C est.

  • Synonyms

    • n-Butyl Ethyl Sulfide
    • Butyl ethyl sulfide
    • 638-46-0
    • 1-ethylsulfanylbutane
    • Sulfide, butyl ethyl
    • Butane, 1-(ethylthio)-
    • 3-Thiaheptane
    • 1-(Ethylsulfanyl)butane
    • Ethyl butyl sulfide
    • Ethyl butyl sulphide
    • 1-(Ethylthio)butane
    • Ethyl n-butyl sulfide
    • 2RYB65Z11E
    • NSC-19
    • ETHYL BUTYLSULFIDE
    • UNII-2RYB65Z11E
    • n-Butylethylsulfide
    • AI3-32577
    • 1-(Ethylsulfanyl)butane #
    • NSC19
    • SCHEMBL199217
    • NSC 19
    • XJIRSLHMKBUGMR-UHFFFAOYSA-
    • DTXSID80862340
    • MFCD00039958
    • AKOS006229965
    • BS-23728
    • DB-054562
    • G77547
    • EN300-6491153
    • Q27255519
    • InChI=1/C6H14S/c1-3-5-6-7-4-2/h3-6H2,1-2H3

  • Applications

    Butyl ethyl sulfide (CAS 638-46-0) is a non-polar sulfur-containing organic compound primarily used as an intermediate in organic synthesis and as a processing solvent in chemical manufacturing. It is commonly employed as a building block for sulfur-containing compounds and may serve as a solvent or co-solvent in specialty formulations. In polymer science, it can act as a chain-transfer or modifying agent to influence the properties of sulfur-containing polymers. In coatings, inks, and adhesives formulations, it is used as a solvent or processing aid. It can also function as an industrial cleaning solvent for removing oils and greases. Additionally, it may be evaluated for research and development in fragrance and pharmaceutical applications as a synthetic intermediate, subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 2209.6
    methanol 913.21
    isopropanol 2293.1
    water 0.06
    ethyl acetate 2518.21
    n-propanol 2279.49
    acetone 3355.97
    n-butanol 2872.54
    acetonitrile 1853.25
    DMF 1493.59
    toluene 2026.19
    isobutanol 1859.95
    1,4-dioxane 4673.62
    methyl acetate 1683.53
    THF 8676.77
    2-butanone 2866.82
    n-pentanol 1635.47
    sec-butanol 2276.39
    n-hexane 1907.1
    ethylene glycol 135.9
    NMP 1651.98
    cyclohexane 4336.75
    DMSO 2582.44
    n-butyl acetate 5835.97
    n-octanol 1403.33
    chloroform 5605.51
    n-propyl acetate 1796.81
    acetic acid 1056.04
    dichloromethane 4828.92
    cyclohexanone 5719.86
    propylene glycol 330.3
    isopropyl acetate 1548.86
    DMAc 983.82
    2-ethoxyethanol 1086.61
    isopentanol 2150.37
    n-heptane 5055.47
    ethyl formate 1374.85
    1,2-dichloroethane 3134.79
    n-hexanol 4357.74
    2-methoxyethanol 1632.14
    isobutyl acetate 1055.37
    tetrachloromethane 1663.04
    n-pentyl acetate 1853.33
    transcutol 3472.34
    n-heptanol 1509.33
    ethylbenzene 919.47
    MIBK 1451.72
    2-propoxyethanol 2849.42
    tert-butanol 2668.78
    MTBE 2732.96
    2-butoxyethanol 1347.51
    propionic acid 1173.6
    o-xylene 996.4
    formic acid 88.33
    diethyl ether 4077.62
    m-xylene 1125.46
    p-xylene 1068.58
    chlorobenzene 2053.63
    dimethyl carbonate 312.35
    n-octane 987.08
    formamide 159.02
    cyclopentanone 4524.91
    2-pentanone 2853.89
    anisole 1085.51
    cyclopentyl methyl ether 3925.8
    gamma-butyrolactone 3119.24
    1-methoxy-2-propanol 1533.86
    pyridine 3781.9
    3-pentanone 1811.47
    furfural 2019.93
    n-dodecane 407.96
    diethylene glycol 826.57
    diisopropyl ether 1316.96
    tert-amyl alcohol 1987.48
    acetylacetone 1799.06
    n-hexadecane 480.92
    acetophenone 858.31
    methyl propionate 1303.98
    isopentyl acetate 3594.89
    trichloroethylene 4165.0
    n-nonanol 1166.05
    cyclohexanol 3301.42
    benzyl alcohol 750.61
    2-ethylhexanol 3304.6
    isooctanol 1097.72
    dipropyl ether 6371.34
    1,2-dichlorobenzene 1416.34
    ethyl lactate 416.85
    propylene carbonate 1866.53
    n-methylformamide 658.75
    2-pentanol 2120.18
    n-pentane 1853.38
    1-propoxy-2-propanol 3250.45
    1-methoxy-2-propyl acetate 2062.12
    2-(2-methoxypropoxy) propanol 759.52
    mesitylene 737.87
    ε-caprolactone 3674.66
    p-cymene 1348.63
    epichlorohydrin 3606.87
    1,1,1-trichloroethane 3678.62
    2-aminoethanol 408.52
    morpholine-4-carbaldehyde 1757.87
    sulfolane 3016.02
    2,2,4-trimethylpentane 491.43
    2-methyltetrahydrofuran 6861.08
    n-hexyl acetate 2019.81
    isooctane 448.21
    2-(2-butoxyethoxy)ethanol 1271.54
    sec-butyl acetate 1086.36
    tert-butyl acetate 1545.45
    decalin 806.12
    glycerin 304.58
    diglyme 2734.13
    acrylic acid 660.1
    isopropyl myristate 888.92
    n-butyric acid 2700.21
    acetyl acetate 1078.46
    di(2-ethylhexyl) phthalate 451.65
    ethyl propionate 1207.92
    nitromethane 1375.22
    1,2-diethoxyethane 3450.25
    benzonitrile 1562.79
    trioctyl phosphate 478.44
    1-bromopropane 4424.87
    gamma-valerolactone 3776.45
    n-decanol 814.65
    triethyl phosphate 719.5
    4-methyl-2-pentanol 975.15
    propionitrile 2185.67
    vinylene carbonate 1361.73
    1,1,2-trichlorotrifluoroethane 1391.77
    DMS 702.98
    cumene 534.26
    2-octanol 1074.34
    2-hexanone 2006.07
    octyl acetate 1001.71
    limonene 2939.78
    1,2-dimethoxyethane 2786.47
    ethyl orthosilicate 822.89
    tributyl phosphate 631.19
    diacetone alcohol 1273.7
    N,N-dimethylaniline 632.01
    acrylonitrile 1596.46
    aniline 1532.4
    1,3-propanediol 852.27
    bromobenzene 2486.79
    dibromomethane 4753.42
    1,1,2,2-tetrachloroethane 3354.59
    2-methyl-cyclohexyl acetate 1597.89
    tetrabutyl urea 878.51
    diisobutyl methanol 1749.51
    2-phenylethanol 1257.76
    styrene 1216.18
    dioctyl adipate 937.25
    dimethyl sulfate 404.35
    ethyl butyrate 3289.95
    methyl lactate 385.34
    butyl lactate 957.74
    diethyl carbonate 1489.73
    propanediol butyl ether 864.7
    triethyl orthoformate 1977.1
    p-tert-butyltoluene 1204.82
    methyl 4-tert-butylbenzoate 711.75
    morpholine 5047.66
    tert-butylamine 2335.42
    n-dodecanol 647.9
    dimethoxymethane 1383.26
    ethylene carbonate 1452.24
    cyrene 550.64
    2-ethoxyethyl acetate 1434.31
    2-ethylhexyl acetate 3059.79
    1,2,4-trichlorobenzene 1400.81
    4-methylpyridine 3276.84
    dibutyl ether 3508.23
    2,6-dimethyl-4-heptanol 1749.51
    DEF 2099.65
    dimethyl isosorbide 1515.51
    tetrachloroethylene 2292.54
    eugenol 609.19
    triacetin 914.97
    span 80 1102.96
    1,4-butanediol 321.69
    1,1-dichloroethane 3671.33
    2-methyl-1-pentanol 1230.9
    methyl formate 504.96
    2-methyl-1-butanol 1895.0
    n-decane 852.79
    butyronitrile 3625.64
    3,7-dimethyl-1-octanol 1389.35
    1-chlorooctane 1615.68
    1-chlorotetradecane 558.25
    n-nonane 1056.78
    undecane 559.33
    tert-butylcyclohexane 664.89
    cyclooctane 1390.46
    cyclopentanol 3011.6
    tetrahydropyran 8841.56
    tert-amyl methyl ether 1899.28
    2,5,8-trioxanonane 1466.12
    1-hexene 3379.75
    2-isopropoxyethanol 874.78
    2,2,2-trifluoroethanol 183.85
    methyl butyrate 1830.59

    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