alpha-Ethylcinnamaldehyde, (E)-

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  • Identifiers

    CAS number
    1755-45-9

    Molecular formula
    C11H12O

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

  • Odor profile

    Fragrance
    Spicy 69.32%
    Herbal 61.23%
    Cinnamon 46.93%
    Floral 45.6%
    Warm 42.72%
    Sweet 40.26%
    Green 38.33%
    Balsamic 37.38%
    Nutty 36.79%
    Fruity 32.53%

     

    Flavor
    Green 41.1%
    Sweet 36.56%
    Floral 35.88%
    Spicy 33.74%
    Cinnamon 33.35%
    Herbal 31.19%
    Fresh 30.22%
    Spice 30.11%
    Balsam 29.95%
    Oily 29.34%

     

    Odor impact est.
    High

  • Properties

    XLogP3-AA
    2.6

    pKa est.
    7.19 (neutral)

    Molecular weight
    160.21 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Very slow

    Boiling point est.
    267°C

    Flash point

    • 113.14 ˚C est.

  • Synonyms

    • alpha-Ethylcinnamaldehyde
    • (E)-2-benzylidenebutanal
    • WUF97WL37C
    • (2E)-2-(Phenylmethylene)butanal
    • Butanal, 2-(phenylmethylene)-, (E)-
    • Butanal, 2-(phenylmethylene)-, (2E)-
    • 1755-45-9
    • alpha-Ethylcinnamaldehyde, (E)-
    • Cinnamaldehyde, alpha-ethyl-, (E)-
    • 28467-92-7
    • UNII-WUF97WL37C
    • Butanal, 2-(phenylmethylene)-
    • (2E)-2-(phenylmethylidene)butanal
    • .ALPHA.-ETHYLCINNAMALDEHYDE, (E)-
    • CINNAMALDEHYDE, .ALPHA.-ETHYL-, (E)-
    • 2-(Phenylmethylene)-Butanal
    • Cinnamaldehyde, alpha-ethyl-
    • EINECS 249-037-6
    • NSC 38977
    • AI3-14400
    • UNII-7XLF3P8UUS
    • 7XLF3P8UUS
    • SCHEMBL8924634
    • BOCRJYUZWIOMOJ-CSKARUKUSA-N
    • A1-05030

  • Applications

    alpha-Ethylcinnamaldehyde, (E), CAS 1755-45-9, is primarily used as a fragrance ingredient and a chemical intermediate in the aroma and flavor sector; in perfumery it can serve as a scented note or a building block for more complex aroma compounds, and it is commonly evaluated for cosmetic and personal care formulations as a fragrance component; it is also applied in household products such as cleaners and air fresheners as a fragrance additive; as an industrial intermediate it supports synthesis of aroma chemicals and related specialty compounds; in polymer and coatings development, it may be used as a precursor or additive for fragrance-release materials and related formulations.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 964.98
    methanol 690.01
    isopropanol 764.64
    water 0.8
    ethyl acetate 1814.53
    n-propanol 902.53
    acetone 2305.01
    n-butanol 763.41
    acetonitrile 2360.31
    DMF 2899.93
    toluene 794.51
    isobutanol 667.79
    1,4-dioxane 1518.73
    methyl acetate 1729.04
    THF 1277.73
    2-butanone 2025.34
    n-pentanol 440.56
    sec-butanol 662.23
    n-hexane 83.8
    ethylene glycol 143.6
    NMP 1417.84
    cyclohexane 138.96
    DMSO 1812.43
    n-butyl acetate 1069.51
    n-octanol 266.65
    chloroform 3993.26
    n-propyl acetate 922.2
    acetic acid 776.59
    dichloromethane 4757.58
    cyclohexanone 2023.74
    propylene glycol 193.63
    isopropyl acetate 663.88
    DMAc 1412.21
    2-ethoxyethanol 503.69
    isopentanol 528.4
    n-heptane 65.91
    ethyl formate 1134.28
    1,2-dichloroethane 3191.21
    n-hexanol 552.2
    2-methoxyethanol 915.2
    isobutyl acetate 446.27
    tetrachloromethane 397.29
    n-pentyl acetate 420.41
    transcutol 2340.01
    n-heptanol 227.62
    ethylbenzene 389.35
    MIBK 552.79
    2-propoxyethanol 660.62
    tert-butanol 685.67
    MTBE 686.0
    2-butoxyethanol 399.42
    propionic acid 898.55
    o-xylene 351.31
    formic acid 172.51
    diethyl ether 1113.66
    m-xylene 395.75
    p-xylene 424.24
    chlorobenzene 1174.38
    dimethyl carbonate 496.66
    n-octane 33.57
    formamide 544.36
    cyclopentanone 1988.79
    2-pentanone 1409.3
    anisole 752.16
    cyclopentyl methyl ether 716.88
    gamma-butyrolactone 2044.07
    1-methoxy-2-propanol 649.32
    pyridine 2318.1
    3-pentanone 1080.51
    furfural 1578.92
    n-dodecane 27.46
    diethylene glycol 364.92
    diisopropyl ether 212.63
    tert-amyl alcohol 551.21
    acetylacetone 1014.98
    n-hexadecane 32.34
    acetophenone 675.84
    methyl propionate 1301.92
    isopentyl acetate 732.81
    trichloroethylene 5322.26
    n-nonanol 218.08
    cyclohexanol 581.45
    benzyl alcohol 487.31
    2-ethylhexanol 320.15
    isooctanol 183.71
    dipropyl ether 473.7
    1,2-dichlorobenzene 894.65
    ethyl lactate 277.74
    propylene carbonate 1141.26
    n-methylformamide 1386.36
    2-pentanol 485.18
    n-pentane 72.69
    1-propoxy-2-propanol 553.48
    1-methoxy-2-propyl acetate 599.23
    2-(2-methoxypropoxy) propanol 343.52
    mesitylene 215.15
    ε-caprolactone 1386.02
    p-cymene 173.12
    epichlorohydrin 2482.55
    1,1,1-trichloroethane 2166.31
    2-aminoethanol 316.59
    morpholine-4-carbaldehyde 1177.98
    sulfolane 1725.53
    2,2,4-trimethylpentane 35.04
    2-methyltetrahydrofuran 1186.84
    n-hexyl acetate 594.0
    isooctane 32.92
    2-(2-butoxyethoxy)ethanol 498.25
    sec-butyl acetate 481.27
    tert-butyl acetate 511.92
    decalin 78.51
    glycerin 228.2
    diglyme 1085.61
    acrylic acid 713.14
    isopropyl myristate 211.53
    n-butyric acid 1196.16
    acetyl acetate 670.53
    di(2-ethylhexyl) phthalate 154.48
    ethyl propionate 771.05
    nitromethane 2170.6
    1,2-diethoxyethane 818.68
    benzonitrile 973.53
    trioctyl phosphate 124.08
    1-bromopropane 1519.25
    gamma-valerolactone 1791.07
    n-decanol 158.46
    triethyl phosphate 206.23
    4-methyl-2-pentanol 219.95
    propionitrile 1571.8
    vinylene carbonate 1131.23
    1,1,2-trichlorotrifluoroethane 1057.77
    DMS 513.44
    cumene 216.56
    2-octanol 169.59
    2-hexanone 863.67
    octyl acetate 263.65
    limonene 250.73
    1,2-dimethoxyethane 1148.65
    ethyl orthosilicate 190.55
    tributyl phosphate 167.31
    diacetone alcohol 528.83
    N,N-dimethylaniline 378.85
    acrylonitrile 1987.56
    aniline 805.13
    1,3-propanediol 449.02
    bromobenzene 1325.0
    dibromomethane 2932.4
    1,1,2,2-tetrachloroethane 3304.27
    2-methyl-cyclohexyl acetate 331.73
    tetrabutyl urea 228.24
    diisobutyl methanol 180.06
    2-phenylethanol 414.56
    styrene 591.84
    dioctyl adipate 287.6
    dimethyl sulfate 600.7
    ethyl butyrate 667.08
    methyl lactate 344.3
    butyl lactate 297.09
    diethyl carbonate 428.65
    propanediol butyl ether 347.75
    triethyl orthoformate 339.59
    p-tert-butyltoluene 151.28
    methyl 4-tert-butylbenzoate 349.44
    morpholine 1707.16
    tert-butylamine 433.39
    n-dodecanol 117.94
    dimethoxymethane 1080.63
    ethylene carbonate 918.86
    cyrene 296.49
    2-ethoxyethyl acetate 556.22
    2-ethylhexyl acetate 537.23
    1,2,4-trichlorobenzene 959.36
    4-methylpyridine 2017.84
    dibutyl ether 403.32
    2,6-dimethyl-4-heptanol 180.06
    DEF 1463.44
    dimethyl isosorbide 579.23
    tetrachloroethylene 1968.91
    eugenol 346.83
    triacetin 465.78
    span 80 278.46
    1,4-butanediol 173.73
    1,1-dichloroethane 3028.57
    2-methyl-1-pentanol 356.48
    methyl formate 1066.44
    2-methyl-1-butanol 553.11
    n-decane 45.52
    butyronitrile 1407.24
    3,7-dimethyl-1-octanol 242.27
    1-chlorooctane 237.78
    1-chlorotetradecane 86.4
    n-nonane 46.8
    undecane 34.81
    tert-butylcyclohexane 68.9
    cyclooctane 44.99
    cyclopentanol 581.95
    tetrahydropyran 1638.96
    tert-amyl methyl ether 431.11
    2,5,8-trioxanonane 625.46
    1-hexene 416.63
    2-isopropoxyethanol 352.4
    2,2,2-trifluoroethanol 274.48
    methyl butyrate 1160.8

    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