9-Decenal

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  • Identifiers

    CAS number
    39770-05-3

    Molecular formula
    C10H18O

    SMILES
    C=CCCCCCCCC=O

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Citrus 81.09%
    Fatty 72.33%
    Waxy 72.18%
    Aldehydic 70.39%
    Green 67.48%
    Floral 62.22%
    Fresh 61.24%
    Orange 57.17%
    Rose 54.75%
    Fruity 49.75%

    Scent© AI

  • Properties

    XLogP3-AA
    3.3

    Molecular weight
    154.25 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Moderate

    Boiling point

    • 211.00 °C. @ 760.00 mm Hg

    Flash point est.
    87.87 ˚C

    Solubility expt.

    • insoluble in water; soluble in most non-polar solvents
    • soluble (in ethanol)

  • Synonyms

    • 9-Decenal
    • 39770-05-3
    • dec-9-enal
    • Costenal
    • UNII-8E4C80798Y
    • EINECS 254-624-5
    • 8E4C80798Y
    • 9-DECENAL [FHFI]
    • DTXSID7052072
    • FEMA NO. 3912
    • 9-decen-1-al
    • SCHEMBL455320
    • DTXCID8030639
    • FEMA 3912
    • PBA77005
    • AKOS006230730
    • DB-253672
    • NS00012193
    • G53335
    • EN300-6730147
    • Q27270243
    • 254-624-5

  • Applications

    9-Decenal (CAS 39770-05-3) is a linear aldehyde with a terminal double bond widely used in flavors and fragrances for green–citrus–fatty facets, enhancing and fixing notes in fine fragrances, soaps, detergents, air care, personal-care bases, and low-dosage citrus/green food flavors; it also serves as a versatile synthetic intermediate: the aldehyde can be selectively reduced to 9-decen-1-ol or oxidized to 9-decenoic acid, while the C=C enables epoxidation, thiol–ene click, and cross-metathesis to install functions, enabling the construction of surfactants, specialty plasticizers/lubricants, functionalized oligomers/polymers, and UV-curable systems; it is employed in R&D for flavor/fragance creation, pharma/agro leads, analytical reference standards, and studies of lipid-oxidation volatiles; when sourced from oleochemicals, it supports bio-based materials value chains.

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 3016.9
    methanol 2858.35
    isopropanol 2674.32
    water 0.06
    ethyl acetate 2705.56
    n-propanol 2557.49
    acetone 4209.92
    n-butanol 2434.09
    acetonitrile 1559.6
    DMF 1984.69
    toluene 824.49
    isobutanol 1798.02
    1,4-dioxane 2611.88
    methyl acetate 1527.45
    THF 4764.44
    2-butanone 2943.02
    n-pentanol 1627.41
    sec-butanol 2051.25
    n-hexane 1170.82
    ethylene glycol 224.4
    NMP 1407.05
    cyclohexane 1090.71
    DMSO 3808.98
    n-butyl acetate 2396.6
    n-octanol 515.22
    chloroform 2895.33
    n-propyl acetate 1904.96
    acetic acid 1245.54
    dichloromethane 3127.39
    cyclohexanone 3418.99
    propylene glycol 487.55
    isopropyl acetate 1498.95
    DMAc 988.45
    2-ethoxyethanol 1410.76
    isopentanol 1989.3
    n-heptane 522.82
    ethyl formate 979.19
    1,2-dichloroethane 2699.83
    n-hexanol 1831.66
    2-methoxyethanol 2437.41
    isobutyl acetate 940.35
    tetrachloromethane 602.5
    n-pentyl acetate 957.96
    transcutol 5180.62
    n-heptanol 530.24
    ethylbenzene 464.41
    MIBK 1335.32
    2-propoxyethanol 1980.38
    tert-butanol 2680.73
    MTBE 2299.69
    2-butoxyethanol 888.87
    propionic acid 1269.28
    o-xylene 411.43
    formic acid 209.24
    diethyl ether 3675.45
    m-xylene 532.86
    p-xylene 519.03
    chlorobenzene 951.48
    dimethyl carbonate 273.84
    n-octane 130.39
    formamide 344.83
    cyclopentanone 3154.12
    2-pentanone 2924.5
    anisole 730.12
    cyclopentyl methyl ether 2642.58
    gamma-butyrolactone 2643.09
    1-methoxy-2-propanol 2090.75
    pyridine 2148.5
    3-pentanone 1641.67
    furfural 1551.16
    n-dodecane 55.6
    diethylene glycol 878.42
    diisopropyl ether 881.49
    tert-amyl alcohol 1793.87
    acetylacetone 1739.64
    n-hexadecane 65.21
    acetophenone 635.67
    methyl propionate 1486.75
    isopentyl acetate 1697.41
    trichloroethylene 3423.83
    n-nonanol 433.84
    cyclohexanol 2015.79
    benzyl alcohol 618.69
    2-ethylhexanol 1124.71
    isooctanol 473.71
    dipropyl ether 2156.98
    1,2-dichlorobenzene 758.45
    ethyl lactate 420.53
    propylene carbonate 1238.58
    n-methylformamide 1023.21
    2-pentanol 1840.12
    n-pentane 667.11
    1-propoxy-2-propanol 1826.91
    1-methoxy-2-propyl acetate 1375.65
    2-(2-methoxypropoxy) propanol 664.01
    mesitylene 358.33
    ε-caprolactone 2151.39
    p-cymene 304.58
    epichlorohydrin 2881.72
    1,1,1-trichloroethane 2107.71
    2-aminoethanol 668.43
    morpholine-4-carbaldehyde 1425.93
    sulfolane 2630.42
    2,2,4-trimethylpentane 172.15
    2-methyltetrahydrofuran 3915.89
    n-hexyl acetate 1104.56
    isooctane 167.07
    2-(2-butoxyethoxy)ethanol 1049.68
    sec-butyl acetate 1056.16
    tert-butyl acetate 1363.5
    decalin 289.02
    glycerin 474.78
    diglyme 1968.15
    acrylic acid 721.71
    isopropyl myristate 371.33
    n-butyric acid 2503.4
    acetyl acetate 849.55
    di(2-ethylhexyl) phthalate 249.61
    ethyl propionate 1318.92
    nitromethane 1742.49
    1,2-diethoxyethane 2358.01
    benzonitrile 838.3
    trioctyl phosphate 208.32
    1-bromopropane 2400.2
    gamma-valerolactone 2875.52
    n-decanol 304.4
    triethyl phosphate 363.22
    4-methyl-2-pentanol 817.16
    propionitrile 1652.56
    vinylene carbonate 916.85
    1,1,2-trichlorotrifluoroethane 1446.86
    DMS 559.38
    cumene 286.55
    2-octanol 396.61
    2-hexanone 2011.68
    octyl acetate 414.69
    limonene 659.8
    1,2-dimethoxyethane 2417.5
    ethyl orthosilicate 398.96
    tributyl phosphate 302.56
    diacetone alcohol 1263.84
    N,N-dimethylaniline 423.13
    acrylonitrile 1401.0
    aniline 945.47
    1,3-propanediol 1183.16
    bromobenzene 1051.77
    dibromomethane 2594.05
    1,1,2,2-tetrachloroethane 2765.12
    2-methyl-cyclohexyl acetate 735.41
    tetrabutyl urea 365.12
    diisobutyl methanol 623.77
    2-phenylethanol 682.09
    styrene 635.96
    dioctyl adipate 482.19
    dimethyl sulfate 416.99
    ethyl butyrate 1479.53
    methyl lactate 446.8
    butyl lactate 618.51
    diethyl carbonate 658.63
    propanediol butyl ether 699.86
    triethyl orthoformate 808.17
    p-tert-butyltoluene 295.95
    methyl 4-tert-butylbenzoate 472.64
    morpholine 3586.82
    tert-butylamine 1879.7
    n-dodecanol 224.37
    dimethoxymethane 1578.01
    ethylene carbonate 879.16
    cyrene 460.96
    2-ethoxyethyl acetate 1046.74
    2-ethylhexyl acetate 1311.03
    1,2,4-trichlorobenzene 778.16
    4-methylpyridine 1933.23
    dibutyl ether 1504.87
    2,6-dimethyl-4-heptanol 623.77
    DEF 2078.72
    dimethyl isosorbide 1060.39
    tetrachloroethylene 1972.64
    eugenol 450.55
    triacetin 710.11
    span 80 649.95
    1,4-butanediol 388.8
    1,1-dichloroethane 2788.43
    2-methyl-1-pentanol 1254.48
    methyl formate 592.94
    2-methyl-1-butanol 1648.25
    n-decane 125.51
    butyronitrile 2078.49
    3,7-dimethyl-1-octanol 596.59
    1-chlorooctane 459.99
    1-chlorotetradecane 137.99
    n-nonane 152.11
    undecane 79.58
    tert-butylcyclohexane 264.03
    cyclooctane 281.06
    cyclopentanol 1900.46
    tetrahydropyran 4833.94
    tert-amyl methyl ether 1454.29
    2,5,8-trioxanonane 1098.64
    1-hexene 2584.76
    2-isopropoxyethanol 1061.36
    2,2,2-trifluoroethanol 227.88
    methyl butyrate 1829.98

    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

Botanical

Name CAS Botanical Proportion
Cilantro (Coriander leaf) 3 8008-52-4 Coriandrum sativum L., fam. Apiaceae (Umbelliferae) 0.8%
Cilantro (Coriander leaf) 5a 8008-52-4 Coriandrum sativum L., fam. Apiaceae (Umbelliferae) 0.46%
Cilantro (Coriander leaf) 5b 8008-52-4 Coriandrum sativum L., fam. Apiaceae (Umbelliferae) 0.01%