2-Furfurylidenebutyraldehyde

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  • Identifiers

    CAS number
    770-27-4

    Molecular formula
    C9H10O2

    SMILES
    CC/C(=C\C1=CC=CO1)/C=O

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Spicy 74.78%
    Nutty 57.73%
    Caramellic 49.32%
    Herbal 44.1%
    Woody 42.8%
    Roasted 38.84%
    Cinnamon 37.29%
    Warm 36.03%
    Burnt 35.72%
    Coffee 29.23%

     

    Flavor
    Woody 42.44%
    Herbal 40.66%
    Spice 39.81%
    Spicy 31.68%
    Nutty 27.79%
    Oily 27.64%
    Caramel 23.91%
    Cinnamon 23.48%
    Sweet 21.7%
    Furfural 20.54%

     

    Odor impact est.
    Medium

  • Properties

    XLogP3-AA
    2.0

    pKa est.
    6.44 (neutral)

    Molecular weight
    150.17 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Slow

    Boiling point

    • 140.00 °C. @ 30.00 mm Hg

    Flash point

    • 90.51 ˚C est.

    Solubility expt.

    • Insoluble in water; Soluble in oils
    • Soluble (in ethanol)

  • Synonyms

    • 2-Ethyl-3-(2-furyl)acrylaldehyde
    • alpha-Ethylfurylacrolein
    • FEMA No. 2492
    • 2-Ethyl-3-furylacrolein
    • 3-Furyl-2-ethylacrolein
    • 770-27-4
    • 2-Furfurylidinebutyraldehyde
    • alpha-Ethyl-2-furanacrolein
    • 2-FURFURYLIDENEBUTYRALDEHYDE
    • Butanal, 2-(2-furanylmethylene)-
    • 2-Ethyl-3-furyl-2-propenal
    • 3-Furyl-2-ethyl-2-propenal
    • 2-Furfurylidene butyraldehyde
    • 2-(2-FURANYLMETHYLENE)BUTANAL
    • 7L78XKP49Q
    • Butanal, 2-(2-furanylmethylene)-, (2E)-
    • (2E)-2-(2-furylmethylene)butanal
    • (2E)-2-(2-Furanylmethylene)butanal
    • 2-Ethyl-4-(2-furanyl)-2-propenal
    • 2-(Furan-2-ylmethylene)butanal
    • EINECS 212-221-1
    • .ALPHA.-ETHYL-2-FURANACROLEIN
    • 2-ETHYL-3-(2-FURYL)ACROLEIN
    • 904295-77-8
    • 2-ETHYL-3-(2-FURANYL)-2-PROPENAL
    • UNII-7L78XKP49Q
    • 2-Furanacrolein, alpha-ethyl-
    • 2-Furanacrolein, .alpha.-ethyl-
    • (2E)-2-(furan-2-ylmethylidene)butanal
    • a-Ethyl-b-2-furylacrolein
    • 2-Ethyl-3(2-furyl)acrolein
    • 3(2-Furyl)-2-ethylacrolein
    • FEMA 2492
    • CHEBI:179654
    • UCPFCQBLYDXPTR-SOFGYWHQSA-N
    • 2-Ethyl-3(2-furyl)-2-propenal
    • AKOS006271985
    • (2E)-2-(uran-2-ylmethylidene)butanal
    • 2-(2-FURANYLMETHYLENE)-BUTANAL
    • 2-FURFURYLIDENE BUTYRALDEHYDE [FHFI]
    • Q27268504

  • Applications

    2-Furfurylidenebutyraldehyde (CAS 770-27-4) is used primarily as a chemical intermediate and building block in fragrance and flavor chemistry, supplying a versatile starting point for the synthesis of aroma compounds. It is commonly evaluated for incorporation into furan-based polymers and resins, and can serve as a functional monomer in polymer chemistry. The aldehyde functionality also enables use in coatings and inks formulations, where it may participate in crosslinking or resin formation. In cosmetics and personal care, it may be employed as a fragrance ingredient or aroma precursor, subject to formulation controls and regulatory requirements. Overall, its applications are formulation- and regulation-dependent, and it is typically considered within specialty materials and fragrance-focused workflows.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 310.62
    methanol 338.44
    isopropanol 227.13
    water 3.28
    ethyl acetate 209.24
    n-propanol 248.11
    acetone 361.42
    n-butanol 224.88
    acetonitrile 417.86
    DMF 859.52
    toluene 205.92
    isobutanol 204.42
    1,4-dioxane 354.05
    methyl acetate 330.9
    THF 349.3
    2-butanone 345.28
    n-pentanol 168.11
    sec-butanol 241.31
    n-hexane 13.29
    ethylene glycol 113.48
    NMP 470.12
    cyclohexane 40.77
    DMSO 692.12
    n-butyl acetate 160.66
    n-octanol 116.85
    chloroform 1043.73
    n-propyl acetate 152.13
    acetic acid 256.31
    dichloromethane 1282.36
    cyclohexanone 401.88
    propylene glycol 129.64
    isopropyl acetate 109.1
    DMAc 720.41
    2-ethoxyethanol 222.03
    isopentanol 180.41
    n-heptane 20.64
    ethyl formate 261.0
    1,2-dichloroethane 553.64
    n-hexanol 158.0
    2-methoxyethanol 345.11
    isobutyl acetate 95.84
    tetrachloromethane 118.25
    n-pentyl acetate 102.73
    transcutol 541.93
    n-heptanol 93.76
    ethylbenzene 134.89
    MIBK 133.12
    2-propoxyethanol 221.89
    tert-butanol 258.33
    MTBE 158.4
    2-butoxyethanol 150.73
    propionic acid 246.23
    o-xylene 156.75
    formic acid 86.34
    diethyl ether 129.74
    m-xylene 141.91
    p-xylene 177.41
    chlorobenzene 282.73
    dimethyl carbonate 132.59
    n-octane 12.79
    formamide 198.42
    cyclopentanone 398.54
    2-pentanone 196.13
    anisole 261.46
    cyclopentyl methyl ether 147.48
    gamma-butyrolactone 421.47
    1-methoxy-2-propanol 244.93
    pyridine 510.62
    3-pentanone 180.62
    furfural 502.53
    n-dodecane 16.89
    diethylene glycol 189.99
    diisopropyl ether 45.19
    tert-amyl alcohol 234.81
    acetylacetone 227.36
    n-hexadecane 18.81
    acetophenone 245.2
    methyl propionate 201.36
    isopentyl acetate 143.66
    trichloroethylene 1008.82
    n-nonanol 97.62
    cyclohexanol 200.65
    benzyl alcohol 219.41
    2-ethylhexanol 107.62
    isooctanol 77.53
    dipropyl ether 96.26
    1,2-dichlorobenzene 263.28
    ethyl lactate 110.19
    propylene carbonate 280.01
    n-methylformamide 336.24
    2-pentanol 137.21
    n-pentane 16.8
    1-propoxy-2-propanol 165.78
    1-methoxy-2-propyl acetate 156.74
    2-(2-methoxypropoxy) propanol 191.71
    mesitylene 86.25
    ε-caprolactone 283.86
    p-cymene 85.57
    epichlorohydrin 515.33
    1,1,1-trichloroethane 448.71
    2-aminoethanol 183.71
    morpholine-4-carbaldehyde 429.29
    sulfolane 515.06
    2,2,4-trimethylpentane 17.13
    2-methyltetrahydrofuran 264.16
    n-hexyl acetate 169.46
    isooctane 13.0
    2-(2-butoxyethoxy)ethanol 220.76
    sec-butyl acetate 99.32
    tert-butyl acetate 118.91
    decalin 29.37
    glycerin 160.91
    diglyme 408.25
    acrylic acid 238.48
    isopropyl myristate 87.55
    n-butyric acid 248.61
    acetyl acetate 143.68
    di(2-ethylhexyl) phthalate 93.19
    ethyl propionate 141.1
    nitromethane 466.25
    1,2-diethoxyethane 165.66
    benzonitrile 325.9
    trioctyl phosphate 63.33
    1-bromopropane 279.03
    gamma-valerolactone 419.4
    n-decanol 80.16
    triethyl phosphate 89.72
    4-methyl-2-pentanol 81.91
    propionitrile 331.36
    vinylene carbonate 316.6
    1,1,2-trichlorotrifluoroethane 336.63
    DMS 170.14
    cumene 91.26
    2-octanol 71.54
    2-hexanone 166.82
    octyl acetate 107.43
    limonene 112.83
    1,2-dimethoxyethane 386.12
    ethyl orthosilicate 79.4
    tributyl phosphate 77.97
    diacetone alcohol 175.72
    N,N-dimethylaniline 186.15
    acrylonitrile 480.27
    aniline 235.93
    1,3-propanediol 211.63
    bromobenzene 319.84
    dibromomethane 739.31
    1,1,2,2-tetrachloroethane 662.96
    2-methyl-cyclohexyl acetate 125.0
    tetrabutyl urea 116.38
    diisobutyl methanol 72.78
    2-phenylethanol 173.19
    styrene 175.73
    dioctyl adipate 129.77
    dimethyl sulfate 206.78
    ethyl butyrate 148.94
    methyl lactate 136.24
    butyl lactate 102.16
    diethyl carbonate 136.16
    propanediol butyl ether 151.17
    triethyl orthoformate 102.92
    p-tert-butyltoluene 78.33
    methyl 4-tert-butylbenzoate 187.31
    morpholine 366.11
    tert-butylamine 161.94
    n-dodecanol 69.03
    dimethoxymethane 294.5
    ethylene carbonate 231.63
    cyrene 180.54
    2-ethoxyethyl acetate 142.16
    2-ethylhexyl acetate 111.93
    1,2,4-trichlorobenzene 299.03
    4-methylpyridine 451.83
    dibutyl ether 113.72
    2,6-dimethyl-4-heptanol 72.78
    DEF 304.64
    dimethyl isosorbide 257.8
    tetrachloroethylene 398.03
    eugenol 183.82
    triacetin 185.43
    span 80 156.72
    1,4-butanediol 109.14
    1,1-dichloroethane 559.05
    2-methyl-1-pentanol 148.24
    methyl formate 283.98
    2-methyl-1-butanol 189.64
    n-decane 22.89
    butyronitrile 285.29
    3,7-dimethyl-1-octanol 113.94
    1-chlorooctane 84.6
    1-chlorotetradecane 43.99
    n-nonane 21.29
    undecane 19.11
    tert-butylcyclohexane 26.64
    cyclooctane 12.78
    cyclopentanol 203.97
    tetrahydropyran 255.75
    tert-amyl methyl ether 127.79
    2,5,8-trioxanonane 312.44
    1-hexene 68.32
    2-isopropoxyethanol 160.85
    2,2,2-trifluoroethanol 109.96
    methyl butyrate 221.21

    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