2,4-Octadienal, (2E,4E)-

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  • Identifiers

    CAS number
    30361-28-5

    Molecular formula
    C8H12O

    SMILES
    CCC/C=C/C=C/C=O

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Fatty 90.7%
    Green 87.31%
    Fruity 71.03%
    Melon 61.03%
    Citrus 59.83%
    Waxy 58.54%
    Aldehydic 58.28%
    Vegetable 58.03%
    Cucumber 57.39%
    Oily 56.89%

     

    Flavor
    Green 71.96%
    Fatty 70.03%
    Cucumber 54.6%
    Fat 48.32%
    Melon 48.24%
    Sweet 47.99%
    Citrus 45.04%
    Orange 38.69%
    Oily 37.82%
    Spicy 35.05%

     

    Odor impact est.
    High

  • Properties

    XLogP3-AA
    2.2

    pKa est.
    7.68 (neutral)

    Molecular weight
    124.18 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Moderately fast

    Boiling point

    • 67.00 °C. @ 0.40 mm Hg

    Flash point

    • 69.7 ˚C est.

    Solubility expt.

    • Insoluble in water; miscible in fats
    • soluble (in ethanol)

  • Synonyms

    • (2E,4E)-Octa-2,4-dienal
    • 2,4-Octadienal
    • 30361-28-5
    • (2E,4E)-2,4-Octadienal
    • 2,4-Octadienal, (2E,4E)-
    • 5577-44-6
    • Octadienal
    • (E,E)-2,4-Octadien-1-al
    • trans,trans-2,4-Octadienal
    • trans,trans-Octa-2,4-dienal
    • 2,4-Octadienal, (E,E)-
    • 2e,4e-octadienal
    • (E,E)-2,4-octadienal
    • Octa-2,4-dienal
    • FEMA No. 3721
    • PR4J26TQJD
    • 2,4-Octadienal, trans,trans-
    • EINECS 250-147-1
    • 38743-20-3
    • (e,e)-octa-2,4-dienal
    • (E)-2,(E)-4-Octadienal
    • 2,4-OCTADIEN-1-AL, (E,E)-
    • TRANS,TRANS-2,4-OCTADIENAL [FHFI]
    • 2,4-Octadienal, predominantly trans,trans (Technical Grade)
    • 2,4-Octadien-1-al
    • MFCD00014676
    • UNII-PR4J26TQJD
    • DTXSID10863562
    • SCHEMBL225645
    • SCHEMBL225646
    • FEMA 3721
    • DTXCID60812161
    • DTXSID00885475
    • CHEBI:165523
    • DVVATNQISMINCX-UHFFFAOYSA-N
    • LMFA06000034
    • AKOS015899862
    • DS-18477
    • DB-003127
    • CS-0186044
    • NS00050348
    • D71091
    • EN300-1867374
    • EN300-7380375
    • A830802
    • Q27286719
    • 2,4-Octadienal, predominantly trans,trans, >=95%, FG
    • 639-066-6

  • Applications

    2,4-Octadienal, (2E,4E)- (CAS 30361-28-5) is primarily used in perfumery as an odorant, contributing green, fresh aldehydic notes, and it is often evaluated for flavor applications to impart similar green or citrusy character; in cosmetics and personal care it serves as a fragrance ingredient in soaps, lotions, and haircare products; in household products such as air fresheners and detergents it is used as a scent additive; it may also act as an intermediate in the synthesis of other aroma compounds for fragrance development; its use is subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 2700.28
    methanol 2953.35
    isopropanol 1739.55
    water 0.2
    ethyl acetate 2276.91
    n-propanol 1889.91
    acetone 4385.41
    n-butanol 1716.27
    acetonitrile 1677.7
    DMF 3198.93
    toluene 762.23
    isobutanol 1231.94
    1,4-dioxane 1956.94
    methyl acetate 1738.7
    THF 3510.05
    2-butanone 2636.97
    n-pentanol 1046.3
    sec-butanol 1342.1
    n-hexane 416.95
    ethylene glycol 359.32
    NMP 2475.48
    cyclohexane 344.49
    DMSO 5216.26
    n-butyl acetate 1749.72
    n-octanol 370.02
    chloroform 2548.67
    n-propyl acetate 1341.56
    acetic acid 1490.28
    dichloromethane 3209.37
    cyclohexanone 2780.0
    propylene glycol 543.42
    isopropyl acetate 1033.59
    DMAc 1403.15
    2-ethoxyethanol 1060.17
    isopentanol 1215.05
    n-heptane 186.13
    ethyl formate 873.3
    1,2-dichloroethane 2671.86
    n-hexanol 1275.16
    2-methoxyethanol 2127.27
    isobutyl acetate 676.64
    tetrachloromethane 484.67
    n-pentyl acetate 636.01
    transcutol 4568.79
    n-heptanol 350.88
    ethylbenzene 359.36
    MIBK 921.74
    2-propoxyethanol 1532.28
    tert-butanol 1738.01
    MTBE 1646.24
    2-butoxyethanol 614.71
    propionic acid 1438.92
    o-xylene 374.08
    formic acid 335.47
    diethyl ether 2052.1
    m-xylene 504.22
    p-xylene 412.98
    chlorobenzene 1006.57
    dimethyl carbonate 439.88
    n-octane 54.29
    formamide 597.63
    cyclopentanone 3489.68
    2-pentanone 2273.3
    anisole 722.69
    cyclopentyl methyl ether 2005.89
    gamma-butyrolactone 3073.71
    1-methoxy-2-propanol 1587.91
    pyridine 2104.29
    3-pentanone 1387.51
    furfural 1678.67
    n-dodecane 32.85
    diethylene glycol 894.53
    diisopropyl ether 478.21
    tert-amyl alcohol 1291.19
    acetylacetone 1714.71
    n-hexadecane 38.4
    acetophenone 644.57
    methyl propionate 1702.18
    isopentyl acetate 1229.65
    trichloroethylene 4135.73
    n-nonanol 297.88
    cyclohexanol 1298.49
    benzyl alcohol 584.68
    2-ethylhexanol 698.69
    isooctanol 282.52
    dipropyl ether 1025.17
    1,2-dichlorobenzene 796.47
    ethyl lactate 360.31
    propylene carbonate 1237.61
    n-methylformamide 1533.84
    2-pentanol 1116.01
    n-pentane 281.5
    1-propoxy-2-propanol 1240.03
    1-methoxy-2-propyl acetate 1093.72
    2-(2-methoxypropoxy) propanol 597.44
    mesitylene 297.44
    ε-caprolactone 1805.49
    p-cymene 223.62
    epichlorohydrin 2965.24
    1,1,1-trichloroethane 2024.0
    2-aminoethanol 803.03
    morpholine-4-carbaldehyde 1691.47
    sulfolane 3588.83
    2,2,4-trimethylpentane 100.07
    2-methyltetrahydrofuran 3120.45
    n-hexyl acetate 866.72
    isooctane 96.19
    2-(2-butoxyethoxy)ethanol 895.61
    sec-butyl acetate 738.02
    tert-butyl acetate 1045.76
    decalin 160.33
    glycerin 566.95
    diglyme 1581.9
    acrylic acid 977.79
    isopropyl myristate 273.46
    n-butyric acid 1851.78
    acetyl acetate 801.35
    di(2-ethylhexyl) phthalate 235.93
    ethyl propionate 971.99
    nitromethane 2579.68
    1,2-diethoxyethane 1635.92
    benzonitrile 837.51
    trioctyl phosphate 174.3
    1-bromopropane 1766.35
    gamma-valerolactone 2703.11
    n-decanol 215.22
    triethyl phosphate 280.44
    4-methyl-2-pentanol 469.95
    propionitrile 1352.02
    vinylene carbonate 1001.27
    1,1,2-trichlorotrifluoroethane 1700.24
    DMS 633.93
    cumene 231.39
    2-octanol 246.2
    2-hexanone 1478.8
    octyl acetate 333.63
    limonene 429.03
    1,2-dimethoxyethane 1743.83
    ethyl orthosilicate 294.98
    tributyl phosphate 256.28
    diacetone alcohol 1103.69
    N,N-dimethylaniline 414.42
    acrylonitrile 1595.04
    aniline 972.32
    1,3-propanediol 1074.1
    bromobenzene 1119.89
    dibromomethane 2327.22
    1,1,2,2-tetrachloroethane 2879.95
    2-methyl-cyclohexyl acetate 546.06
    tetrabutyl urea 339.87
    diisobutyl methanol 372.9
    2-phenylethanol 618.67
    styrene 555.12
    dioctyl adipate 395.14
    dimethyl sulfate 698.81
    ethyl butyrate 941.07
    methyl lactate 522.9
    butyl lactate 461.19
    diethyl carbonate 476.52
    propanediol butyl ether 642.14
    triethyl orthoformate 514.93
    p-tert-butyltoluene 216.04
    methyl 4-tert-butylbenzoate 403.7
    morpholine 2805.0
    tert-butylamine 1148.12
    n-dodecanol 161.29
    dimethoxymethane 1641.31
    ethylene carbonate 821.69
    cyrene 462.25
    2-ethoxyethyl acetate 855.55
    2-ethylhexyl acetate 900.0
    1,2,4-trichlorobenzene 905.4
    4-methylpyridine 1952.74
    dibutyl ether 766.64
    2,6-dimethyl-4-heptanol 372.9
    DEF 2034.26
    dimethyl isosorbide 978.51
    tetrachloroethylene 1860.44
    eugenol 447.97
    triacetin 611.83
    span 80 549.21
    1,4-butanediol 385.98
    1,1-dichloroethane 2480.65
    2-methyl-1-pentanol 816.47
    methyl formate 942.19
    2-methyl-1-butanol 1136.29
    n-decane 61.24
    butyronitrile 1512.94
    3,7-dimethyl-1-octanol 417.16
    1-chlorooctane 292.45
    1-chlorotetradecane 100.71
    n-nonane 67.09
    undecane 43.87
    tert-butylcyclohexane 162.82
    cyclooctane 112.03
    cyclopentanol 1481.84
    tetrahydropyran 2959.03
    tert-amyl methyl ether 1063.35
    2,5,8-trioxanonane 962.8
    1-hexene 1223.66
    2-isopropoxyethanol 772.28
    2,2,2-trifluoroethanol 307.59
    methyl butyrate 1380.07

    Scent© AI

1 4

IFRA standard 51

Recommendation
Prohibition
Maximum acceptable concentrations in the finished product (%)
Category 1
Products applied to the lips
 0 % Category 7A
Rinse-off products applied to the hair with some hand contact
 0 %
Category 2
Products applied to the axillae
 0 % Category 7B
Leave-on products applied to the hair with some hand contact
 0 %
Category 3
Products applied to the face/body using fingertips
 0 % Category 8
Products with significant anogenital exposure
 0 %
Category 4
Products related to fine fragrance
 0 % Category 9
Products with body and hand exposure, primarily rinse off
 0 %
Category 5A
Body lotion products applied to the body using the hands (palms), primarily leave on
 0 % Category 10A
Household care products with mostly hand contact
 0 %
Category 5B
Face moisturizer products applied to the face using the hands (palms), primarily leave on
 0 % Category 10B
Household care products with mostly hand contact, including aerosol/spray products (with potential leave-on skin contact)
 0 %
Category 5C
Hand cream products applied to the hands using the hands (palms), primarily leave on
 0 % Category 11A
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate without UV exposure
 0 %
Category 5D
Baby Creams, baby Oils and baby talc
 0 % Category 11B
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate with potential UV exposure
 0 %
Category 6
Products with oral and lip exposure
 0 % Category 12
Products not intended for direct skin contact, minimal or insignificant transfer to skin
 0 %

Prohibition
2,4-Dienals should not be used as a fragrance ingredient.