2,4-Undecadienal

Overview IFRA Request a quote

  • Identifiers

    CAS number
    30361-29-6

    Molecular formula
    C11H18O

    SMILES
    CCCCCC/C=C/C=C/C=O

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Fatty 91.8%
    Citrus 71.33%
    Green 70.06%
    Waxy 69.82%
    Fruity 61.56%
    Aldehydic 59.82%
    Melon 55.02%
    Cucumber 54.54%
    Oily 53.11%
    Orange 50.07%

     

    Flavor
    Fatty 63.46%
    Citrus 53.73%
    Green 50.04%
    Cucumber 49.28%
    Melon 46.69%
    Orange 44.98%
    Fat 42.27%
    Sweet 41.58%
    Waxy 37.71%
    Oily 35.38%

     

    Odor impact est.
    High

  • Properties

    XLogP3-AA
    3.8

    pKa est.
    7.59 (neutral)

    Molecular weight
    166.26 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Slow

    Boiling point

    • 129.00 °C. @ 13.00 mm Hg

    Flash point

    • 109.5 ˚C est.

    Solubility expt.

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

  • Synonyms

    • 2,4-Undecadienal
    • 30361-29-6
    • (2E,4E)-Undeca-2,4-dienal
    • 13162-46-4
    • 2,4-Undecadienal, (2E,4E)-
    • trans,trans-2,4-Undecadienal
    • trans,trans-2,4-Undecadien-1-al
    • Undeca-2,4-dien-1-al
    • 2,4-trans,trans-Undecadienal
    • FEMA No. 3422
    • 2,4-Undecadienal, (E,E)-
    • (E,E)-2,4-Undecadien-1-al
    • 2,4-Undecadien-1-al
    • UNII-7L26S7BW06
    • 7L26S7BW06
    • EINECS 250-148-7
    • (Z/E)-2,4-Undecadienal
    • DTXSID60885476
    • 2,4-UNDECADIENAL [FHFI]
    • UNDECA-TRANS-2,TRANS-4-DIENAL
    • 2,4-UNDECADIENAL, TRANS,TRANS-
    • (2E,4E)-2,4-Undecadienal
    • MFCD00014677
    • 2E,4E-Undecadien-1-al
    • (E,E)-undeca-2,4-dienal
    • SCHEMBL229841
    • SCHEMBL229842
    • FEMA 3422
    • DTXCID20909607
    • CHEBI:169399
    • BCP14049
    • AKOS015902314
    • trans,trans-2,4-Undecadienal, >=90%
    • AS-76715
    • DB-003791
    • NS00013314
    • Q27268487
    • trans,trans-2,4-Undecadienal, remainder mainly trans,cis isomer

  • Applications

    trans,trans-2,4-Undecadienal (CAS 30361-29-6) is an open-chain aldehyde with a characteristic citrus-buttery scent that is widely employed in flavour industry to impart orange peel, tangerine, coriander, chicken fat and roasted meat nuances to candies, biscuits, instant soups, plant-based foods, liquid seasonings and smoke flavours; in perfumery and personal-care products it contributes a clean “aldehydic” top note that brightens fine soaps, detergents and scented candles; in scientific work the compound acts as a lipid-oxidation marker, a GC-MS calibration standard for natural aroma analysis and a precursor for synthesising specialty aldehydes; it is also studied as an attractant for Anopheles mosquitoes in epidemiological traps, as a semi-finished material for food-preservative additives and as an indicator ink in smart packaging that monitors seafood and meat freshness, although its use must observe IFRA limits and FEMA/GRAS regulations owing to potential skin irritation and the high reactivity of its carbonyl group.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 2634.57
    methanol 2124.15
    isopropanol 2073.27
    water 0.01
    ethyl acetate 2922.57
    n-propanol 2137.52
    acetone 3814.25
    n-butanol 1967.91
    acetonitrile 1523.38
    DMF 1805.93
    toluene 958.45
    isobutanol 1367.35
    1,4-dioxane 2445.19
    methyl acetate 1593.33
    THF 4618.52
    2-butanone 3100.29
    n-pentanol 1412.28
    sec-butanol 1692.29
    n-hexane 830.97
    ethylene glycol 150.7
    NMP 1237.68
    cyclohexane 723.14
    DMSO 3659.16
    n-butyl acetate 2146.96
    n-octanol 343.78
    chloroform 2867.13
    n-propyl acetate 1770.75
    acetic acid 795.64
    dichloromethane 3788.04
    cyclohexanone 3067.26
    propylene glycol 378.08
    isopropyl acetate 1532.06
    DMAc 1017.01
    2-ethoxyethanol 1306.8
    isopentanol 1597.63
    n-heptane 296.25
    ethyl formate 780.64
    1,2-dichloroethane 3423.78
    n-hexanol 1499.76
    2-methoxyethanol 2163.37
    isobutyl acetate 918.89
    tetrachloromethane 493.08
    n-pentyl acetate 781.52
    transcutol 5076.91
    n-heptanol 386.09
    ethylbenzene 469.38
    MIBK 1319.13
    2-propoxyethanol 1784.84
    tert-butanol 2156.12
    MTBE 2614.86
    2-butoxyethanol 697.53
    propionic acid 898.84
    o-xylene 420.75
    formic acid 122.63
    diethyl ether 4129.39
    m-xylene 590.9
    p-xylene 466.74
    chlorobenzene 921.49
    dimethyl carbonate 299.58
    n-octane 80.65
    formamide 252.53
    cyclopentanone 2910.0
    2-pentanone 2943.14
    anisole 771.32
    cyclopentyl methyl ether 2685.96
    gamma-butyrolactone 2164.26
    1-methoxy-2-propanol 1927.71
    pyridine 2173.34
    3-pentanone 1712.92
    furfural 1224.03
    n-dodecane 37.99
    diethylene glycol 765.06
    diisopropyl ether 913.64
    tert-amyl alcohol 1569.93
    acetylacetone 1784.34
    n-hexadecane 46.18
    acetophenone 640.97
    methyl propionate 1666.35
    isopentyl acetate 1675.59
    trichloroethylene 4111.94
    n-nonanol 305.52
    cyclohexanol 1486.13
    benzyl alcohol 591.55
    2-ethylhexanol 895.87
    isooctanol 341.3
    dipropyl ether 1777.53
    1,2-dichlorobenzene 738.8
    ethyl lactate 365.7
    propylene carbonate 952.65
    n-methylformamide 825.0
    2-pentanol 1526.46
    n-pentane 493.0
    1-propoxy-2-propanol 1579.64
    1-methoxy-2-propyl acetate 1407.87
    2-(2-methoxypropoxy) propanol 589.73
    mesitylene 368.71
    ε-caprolactone 1841.91
    p-cymene 264.31
    epichlorohydrin 3334.45
    1,1,1-trichloroethane 2256.7
    2-aminoethanol 541.02
    morpholine-4-carbaldehyde 1349.1
    sulfolane 2305.36
    2,2,4-trimethylpentane 143.28
    2-methyltetrahydrofuran 4079.29
    n-hexyl acetate 925.18
    isooctane 138.35
    2-(2-butoxyethoxy)ethanol 907.29
    sec-butyl acetate 1077.52
    tert-butyl acetate 1453.36
    decalin 242.14
    glycerin 337.78
    diglyme 1783.17
    acrylic acid 465.23
    isopropyl myristate 313.36
    n-butyric acid 1730.19
    acetyl acetate 820.02
    di(2-ethylhexyl) phthalate 209.38
    ethyl propionate 1302.95
    nitromethane 1398.04
    1,2-diethoxyethane 2606.89
    benzonitrile 739.98
    trioctyl phosphate 163.91
    1-bromopropane 2840.7
    gamma-valerolactone 2432.16
    n-decanol 217.88
    triethyl phosphate 317.73
    4-methyl-2-pentanol 639.36
    propionitrile 1504.93
    vinylene carbonate 692.56
    1,1,2-trichlorotrifluoroethane 1402.51
    DMS 551.86
    cumene 278.01
    2-octanol 262.48
    2-hexanone 1991.03
    octyl acetate 347.07
    limonene 555.75
    1,2-dimethoxyethane 2328.17
    ethyl orthosilicate 352.73
    tributyl phosphate 247.09
    diacetone alcohol 1249.96
    N,N-dimethylaniline 429.86
    acrylonitrile 1307.03
    aniline 944.07
    1,3-propanediol 853.89
    bromobenzene 1099.15
    dibromomethane 2935.03
    1,1,2,2-tetrachloroethane 3079.48
    2-methyl-cyclohexyl acetate 655.49
    tetrabutyl urea 299.35
    diisobutyl methanol 490.31
    2-phenylethanol 639.36
    styrene 659.43
    dioctyl adipate 412.64
    dimethyl sulfate 431.34
    ethyl butyrate 1293.49
    methyl lactate 397.68
    butyl lactate 455.91
    diethyl carbonate 568.19
    propanediol butyl ether 521.37
    triethyl orthoformate 670.81
    p-tert-butyltoluene 260.04
    methyl 4-tert-butylbenzoate 390.55
    morpholine 3728.72
    tert-butylamine 1575.77
    n-dodecanol 161.14
    dimethoxymethane 1781.76
    ethylene carbonate 647.14
    cyrene 410.03
    2-ethoxyethyl acetate 1008.76
    2-ethylhexyl acetate 1213.84
    1,2,4-trichlorobenzene 795.16
    4-methylpyridine 1997.32
    dibutyl ether 1194.94
    2,6-dimethyl-4-heptanol 490.31
    DEF 2149.61
    dimethyl isosorbide 988.64
    tetrachloroethylene 1884.74
    eugenol 383.26
    triacetin 596.27
    span 80 522.46
    1,4-butanediol 295.02
    1,1-dichloroethane 3165.39
    2-methyl-1-pentanol 1089.96
    methyl formate 443.95
    2-methyl-1-butanol 1401.17
    n-decane 81.77
    butyronitrile 1923.45
    3,7-dimethyl-1-octanol 456.19
    1-chlorooctane 360.5
    1-chlorotetradecane 111.84
    n-nonane 95.47
    undecane 53.42
    tert-butylcyclohexane 225.46
    cyclooctane 212.39
    cyclopentanol 1282.6
    tetrahydropyran 4712.99
    tert-amyl methyl ether 1600.8
    2,5,8-trioxanonane 985.87
    1-hexene 2265.76
    2-isopropoxyethanol 967.77
    2,2,2-trifluoroethanol 133.81
    methyl butyrate 1687.98

    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.