2-Ethyl-5-methylfuran

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  • Identifiers

    CAS number
    1703-52-2

    Molecular formula
    C7H10O

    SMILES
    CCC1=CC=C(O1)C

    Retention indicies (RI)

    • Carbowax: 1433.0

  • Odor profile

    Fragrance
    Ethereal 76.77%
    Burnt 58.04%
    Nutty 55.27%
    Roasted 52.13%
    Solvent 50.41%
    Sweet 45.89%
    Gassy 45.46%
    Musty 44.94%
    Coffee 44.13%
    Meaty 37.21%

     

    Flavor
    Roasted 46.31%
    Coffee 38.86%
    Nutty 38.7%
    Burnt 37.76%
    Earthy 35.98%
    Ethereal 35.1%
    Sweet 31.77%
    Meaty 30.59%
    Sulfury 27.25%
    Vegetable 27.19%

     

    Odor impact est.
    High

  • Properties

    XLogP3-AA
    2.2

    pKa est.
    7.36 (neutral)

    Molecular weight
    110.15 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra fast

    Boiling point

    • 118.00 to 119.00 °C. @ 760.00 mm Hg

    Flash point

    • 12.87 ˚C est.

  • Synonyms

    • 2-Ethyl-5-methylfuran
    • 1703-52-2
    • Furan, 2-ethyl-5-methyl-
    • 2-Methyl-5-ethylfuran
    • 2-Ethyl-5-methyl-furan
    • 2-ethyl-5-methyl furan
    • PG4BLD3EJI
    • EINECS 216-937-5
    • UNII-PG4BLD3EJI
    • 5-METHYL-2-ETHYLFURAN
    • CHEBI:88617
    • DTXSID80168839
    • furan, 2-methyl, 5-ethyl
    • SCHEMBL144611
    • 1-ETHYL-5-METHYLFURAN
    • DTXCID2091330
    • MFCD00053126
    • AKOS006228280
    • SB61677
    • AS-57447
    • CS-0333891
    • NS00021742
    • A12137
    • Q27160507
    • 216-937-5

  • Applications

    2-Ethyl-5-methylfuran (CAS 1703-52-2) is primarily used as an intermediate in organic synthesis and can serve as a solvent or processing aid in chemical manufacturing. In the plastics and polymer sector it is explored as a feedstock for furan-based polymers or related resins. In fragrance and cosmetics it may be considered as an odorant/fragrance component and, for food product development, has been evaluated as a flavor ingredient. Additionally, due to its furan core, it can serve as a building block or intermediate for bio-based materials and furan-containing polymers, with usage dependent on formulation limits and local regulations.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 1346.37
    methanol 1943.42
    isopropanol 1006.31
    water 16.55
    ethyl acetate 759.76
    n-propanol 1117.22
    acetone 1017.02
    n-butanol 1093.44
    acetonitrile 872.4
    DMF 1423.46
    toluene 576.4
    isobutanol 930.76
    1,4-dioxane 1590.43
    methyl acetate 810.62
    THF 1690.37
    2-butanone 889.48
    n-pentanol 761.67
    sec-butanol 1051.64
    n-hexane 413.84
    ethylene glycol 506.93
    NMP 1250.43
    cyclohexane 311.36
    DMSO 1324.41
    n-butyl acetate 532.23
    n-octanol 564.02
    chloroform 2690.62
    n-propyl acetate 426.72
    acetic acid 693.91
    dichloromethane 2593.47
    cyclohexanone 1064.13
    propylene glycol 586.17
    isopropyl acetate 507.01
    DMAc 1193.97
    2-ethoxyethanol 1038.94
    isopentanol 891.08
    n-heptane 200.37
    ethyl formate 509.04
    1,2-dichloroethane 1262.67
    n-hexanol 869.84
    2-methoxyethanol 1639.06
    isobutyl acetate 318.8
    tetrachloromethane 682.39
    n-pentyl acetate 483.49
    transcutol 1987.24
    n-heptanol 443.16
    ethylbenzene 343.98
    MIBK 547.34
    2-propoxyethanol 1201.81
    tert-butanol 1119.06
    MTBE 1063.15
    2-butoxyethanol 675.24
    propionic acid 711.51
    o-xylene 404.92
    formic acid 329.42
    diethyl ether 1123.43
    m-xylene 407.46
    p-xylene 411.96
    chlorobenzene 740.99
    dimethyl carbonate 330.16
    n-octane 104.14
    formamide 377.01
    cyclopentanone 1125.21
    2-pentanone 748.45
    anisole 697.49
    cyclopentyl methyl ether 968.85
    gamma-butyrolactone 1135.62
    1-methoxy-2-propanol 1216.95
    pyridine 936.9
    3-pentanone 659.94
    furfural 1044.58
    n-dodecane 96.92
    diethylene glycol 872.14
    diisopropyl ether 372.63
    tert-amyl alcohol 1043.78
    acetylacetone 790.75
    n-hexadecane 105.53
    acetophenone 515.07
    methyl propionate 695.25
    isopentyl acetate 476.44
    trichloroethylene 1847.44
    n-nonanol 463.97
    cyclohexanol 819.38
    benzyl alcohol 531.74
    2-ethylhexanol 480.97
    isooctanol 348.77
    dipropyl ether 563.03
    1,2-dichlorobenzene 681.86
    ethyl lactate 289.59
    propylene carbonate 590.0
    n-methylformamide 716.44
    2-pentanol 759.6
    n-pentane 313.74
    1-propoxy-2-propanol 769.59
    1-methoxy-2-propyl acetate 538.6
    2-(2-methoxypropoxy) propanol 575.3
    mesitylene 275.81
    ε-caprolactone 900.1
    p-cymene 229.95
    epichlorohydrin 1413.95
    1,1,1-trichloroethane 1340.24
    2-aminoethanol 837.84
    morpholine-4-carbaldehyde 1311.86
    sulfolane 1379.08
    2,2,4-trimethylpentane 173.15
    2-methyltetrahydrofuran 1357.03
    n-hexyl acetate 795.35
    isooctane 132.4
    2-(2-butoxyethoxy)ethanol 802.39
    sec-butyl acetate 338.75
    tert-butyl acetate 563.99
    decalin 195.19
    glycerin 710.34
    diglyme 1236.1
    acrylic acid 571.46
    isopropyl myristate 312.83
    n-butyric acid 784.62
    acetyl acetate 456.31
    di(2-ethylhexyl) phthalate 286.48
    ethyl propionate 447.23
    nitromethane 933.67
    1,2-diethoxyethane 736.23
    benzonitrile 642.07
    trioctyl phosphate 208.25
    1-bromopropane 1084.5
    gamma-valerolactone 1291.45
    n-decanol 344.48
    triethyl phosphate 211.17
    4-methyl-2-pentanol 444.59
    propionitrile 856.15
    vinylene carbonate 588.63
    1,1,2-trichlorotrifluoroethane 977.72
    DMS 474.7
    cumene 287.29
    2-octanol 361.14
    2-hexanone 554.91
    octyl acetate 394.37
    limonene 345.11
    1,2-dimethoxyethane 1401.19
    ethyl orthosilicate 217.24
    tributyl phosphate 253.09
    diacetone alcohol 648.37
    N,N-dimethylaniline 531.99
    acrylonitrile 879.01
    aniline 665.79
    1,3-propanediol 890.62
    bromobenzene 815.77
    dibromomethane 1843.53
    1,1,2,2-tetrachloroethane 1626.58
    2-methyl-cyclohexyl acetate 345.89
    tetrabutyl urea 324.51
    diisobutyl methanol 261.73
    2-phenylethanol 541.77
    styrene 421.93
    dioctyl adipate 373.5
    dimethyl sulfate 528.65
    ethyl butyrate 382.2
    methyl lactate 411.46
    butyl lactate 361.97
    diethyl carbonate 255.96
    propanediol butyl ether 632.74
    triethyl orthoformate 277.58
    p-tert-butyltoluene 240.08
    methyl 4-tert-butylbenzoate 496.45
    morpholine 1523.54
    tert-butylamine 860.9
    n-dodecanol 271.98
    dimethoxymethane 1063.0
    ethylene carbonate 491.03
    cyrene 487.13
    2-ethoxyethyl acetate 566.87
    2-ethylhexyl acetate 389.46
    1,2,4-trichlorobenzene 767.74
    4-methylpyridine 1078.35
    dibutyl ether 607.08
    2,6-dimethyl-4-heptanol 261.73
    DEF 890.48
    dimethyl isosorbide 754.27
    tetrachloroethylene 1149.44
    eugenol 498.41
    triacetin 522.57
    span 80 519.38
    1,4-butanediol 482.4
    1,1-dichloroethane 1474.24
    2-methyl-1-pentanol 728.73
    methyl formate 545.71
    2-methyl-1-butanol 942.48
    n-decane 149.19
    butyronitrile 859.19
    3,7-dimethyl-1-octanol 498.19
    1-chlorooctane 444.62
    1-chlorotetradecane 200.98
    n-nonane 160.58
    undecane 115.63
    tert-butylcyclohexane 223.46
    cyclooctane 139.12
    cyclopentanol 878.05
    tetrahydropyran 1266.74
    tert-amyl methyl ether 834.38
    2,5,8-trioxanonane 855.61
    1-hexene 735.24
    2-isopropoxyethanol 709.51
    2,2,2-trifluoroethanol 276.24
    methyl butyrate 566.09

    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
Olibanum, African (Oman) 8016-36-2 Boswellia frereana Birdwood, fam. Burseraceae 0.1%