2,5-Dihydro-3-methylfuran

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  • Identifiers

    CAS number
    1708-31-2

    Molecular formula
    C5H8O

    SMILES
    CC1=CCOC1

    Safety labels

  • Odor profile

    Fragrance
    Sweet 58.34%
    Mint 47.74%
    Herbal 41.36%
    Nutty 32.08%
    Ethereal 31.76%
    Solvent 30.92%
    Caramellic 29.01%
    Musty 28.8%
    Phenolic 28.54%
    Spicy 28.3%

     

    Flavor
    Green 35.32%
    Fruity 33.37%
    Caramel 33.32%
    Floral 31.02%
    Nutty 30.02%
    Woody 28.57%
    Spicy 27.46%
    Earthy 26.16%
    Musty 24.67%
    Roasted 21.98%

     

    Odor impact est.
    High

  • Properties

    XLogP3-AA
    0.2

    pKa est.
    7.6 (neutral)

    Molecular weight
    84.12 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra fast

    Boiling point est.
    90°C

    Flash point

    • 5.93 ˚C est.

  • Synonyms

    • 2,5-Dihydro-3-methylfuran
    • 1708-31-2
    • Furan, 2,5-dihydro-3-methyl-
    • 2,5-dihydro-3-methylfurane
    • DTXSID80336415
    • RefChem:247460
    • DTXCID30287504
    • GSDYNJRRFBBEJS-UHFFFAOYSA-N
    • 3-Methyl-2,5-dihydrofuran
    • SCHEMBL257417
    • 3-Methyl-2,5-dihydrofuran #
    • SCHEMBL3893141
    • 1708-31-2

  • Applications

    2,5-Dihydro-3-methylfuran (CAS 1708-31-2) is primarily used as an intermediate in the synthesis of aroma and fragrance compounds for the perfume and flavor industries. It is also evaluated as a building block for functional heterocycles in pharmaceutical and agrochemical research. In some industrial processes it may serve as a solvent or co-solvent in manufacturing and formulation work. It can be explored as a precursor for polymer and specialty plastic materials, enabling the design of functionalized furan derivatives. Use cases depend on local regulations and formulation constraints.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 1431.63
    methanol 1178.68
    isopropanol 1046.29
    water 71.03
    ethyl acetate 904.76
    n-propanol 1063.05
    acetone 643.11
    n-butanol 932.34
    acetonitrile 1225.82
    DMF 666.8
    toluene 294.56
    isobutanol 667.81
    1,4-dioxane 956.79
    methyl acetate 818.77
    THF 859.97
    2-butanone 600.84
    n-pentanol 506.64
    sec-butanol 946.17
    n-hexane 76.17
    ethylene glycol 487.14
    NMP 410.79
    cyclohexane 87.4
    DMSO 461.29
    n-butyl acetate 321.15
    n-octanol 268.38
    chloroform 2287.19
    n-propyl acetate 303.68
    acetic acid 1765.51
    dichloromethane 1502.38
    cyclohexanone 383.75
    propylene glycol 703.85
    isopropyl acetate 426.24
    DMAc 679.65
    2-ethoxyethanol 888.65
    isopentanol 659.91
    n-heptane 83.6
    ethyl formate 465.73
    1,2-dichloroethane 592.18
    n-hexanol 500.06
    2-methoxyethanol 1366.48
    isobutyl acetate 178.53
    tetrachloromethane 497.15
    n-pentyl acetate 209.63
    transcutol 1862.14
    n-heptanol 304.11
    ethylbenzene 128.41
    MIBK 282.11
    2-propoxyethanol 779.69
    tert-butanol 992.55
    MTBE 566.97
    2-butoxyethanol 545.74
    propionic acid 952.0
    o-xylene 184.46
    formic acid 772.99
    diethyl ether 743.6
    m-xylene 201.87
    p-xylene 162.72
    chlorobenzene 319.25
    dimethyl carbonate 255.71
    n-octane 31.27
    formamide 889.3
    cyclopentanone 447.58
    2-pentanone 484.61
    anisole 352.37
    cyclopentyl methyl ether 412.65
    gamma-butyrolactone 569.05
    1-methoxy-2-propanol 968.88
    pyridine 787.81
    3-pentanone 368.01
    furfural 651.4
    n-dodecane 25.41
    diethylene glycol 652.62
    diisopropyl ether 189.26
    tert-amyl alcohol 803.48
    acetylacetone 464.22
    n-hexadecane 26.2
    acetophenone 256.25
    methyl propionate 559.72
    isopentyl acetate 246.77
    trichloroethylene 1275.63
    n-nonanol 236.59
    cyclohexanol 464.3
    benzyl alcohol 348.8
    2-ethylhexanol 274.9
    isooctanol 224.43
    dipropyl ether 312.35
    1,2-dichlorobenzene 276.25
    ethyl lactate 211.54
    propylene carbonate 383.09
    n-methylformamide 634.03
    2-pentanol 664.36
    n-pentane 120.43
    1-propoxy-2-propanol 571.62
    1-methoxy-2-propyl acetate 350.93
    2-(2-methoxypropoxy) propanol 371.34
    mesitylene 111.51
    ε-caprolactone 451.33
    p-cymene 107.75
    epichlorohydrin 768.82
    1,1,1-trichloroethane 874.39
    2-aminoethanol 990.79
    morpholine-4-carbaldehyde 712.35
    sulfolane 358.91
    2,2,4-trimethylpentane 67.85
    2-methyltetrahydrofuran 685.05
    n-hexyl acetate 288.7
    isooctane 44.51
    2-(2-butoxyethoxy)ethanol 583.99
    sec-butyl acetate 226.09
    tert-butyl acetate 341.79
    decalin 44.2
    glycerin 742.38
    diglyme 913.89
    acrylic acid 864.18
    isopropyl myristate 112.25
    n-butyric acid 1100.84
    acetyl acetate 502.46
    di(2-ethylhexyl) phthalate 110.61
    ethyl propionate 301.68
    nitromethane 1475.55
    1,2-diethoxyethane 467.75
    benzonitrile 368.45
    trioctyl phosphate 74.61
    1-bromopropane 496.75
    gamma-valerolactone 672.97
    n-decanol 170.03
    triethyl phosphate 111.52
    4-methyl-2-pentanol 330.65
    propionitrile 759.0
    vinylene carbonate 402.16
    1,1,2-trichlorotrifluoroethane 892.39
    DMS 210.94
    cumene 95.32
    2-octanol 182.23
    2-hexanone 262.68
    octyl acetate 163.98
    limonene 156.44
    1,2-dimethoxyethane 667.64
    ethyl orthosilicate 122.58
    tributyl phosphate 86.83
    diacetone alcohol 462.72
    N,N-dimethylaniline 214.05
    acrylonitrile 828.96
    aniline 551.14
    1,3-propanediol 978.45
    bromobenzene 299.88
    dibromomethane 998.96
    1,1,2,2-tetrachloroethane 926.83
    2-methyl-cyclohexyl acetate 166.75
    tetrabutyl urea 100.05
    diisobutyl methanol 144.95
    2-phenylethanol 314.74
    styrene 172.57
    dioctyl adipate 152.33
    dimethyl sulfate 255.65
    ethyl butyrate 266.92
    methyl lactate 352.32
    butyl lactate 186.24
    diethyl carbonate 187.45
    propanediol butyl ether 432.98
    triethyl orthoformate 200.99
    p-tert-butyltoluene 106.59
    methyl 4-tert-butylbenzoate 236.99
    morpholine 1230.65
    tert-butylamine 680.32
    n-dodecanol 126.13
    dimethoxymethane 533.43
    ethylene carbonate 330.56
    cyrene 230.95
    2-ethoxyethyl acetate 345.38
    2-ethylhexyl acetate 187.02
    1,2,4-trichlorobenzene 334.08
    4-methylpyridine 625.56
    dibutyl ether 232.59
    2,6-dimethyl-4-heptanol 144.95
    DEF 546.12
    dimethyl isosorbide 376.1
    tetrachloroethylene 689.21
    eugenol 263.0
    triacetin 296.16
    span 80 332.21
    1,4-butanediol 382.04
    1,1-dichloroethane 963.65
    2-methyl-1-pentanol 403.79
    methyl formate 364.26
    2-methyl-1-butanol 645.85
    n-decane 42.75
    butyronitrile 724.38
    3,7-dimethyl-1-octanol 238.77
    1-chlorooctane 140.1
    1-chlorotetradecane 53.55
    n-nonane 40.89
    undecane 31.36
    tert-butylcyclohexane 50.01
    cyclooctane 37.38
    cyclopentanol 459.86
    tetrahydropyran 731.08
    tert-amyl methyl ether 437.02
    2,5,8-trioxanonane 557.99
    1-hexene 227.61
    2-isopropoxyethanol 579.14
    2,2,2-trifluoroethanol 727.33
    methyl butyrate 346.26

    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