10-Undecenal

Overview IFRA Botanical Request a quote

  • Identifiers

    CAS number
    112-45-8

    Molecular formula
    C11H20O

    SMILES
    C=CCCCCCCCCC=O

    Safety labels

    Irritant
    Irritant

    Environmental Hazard
    Environmental

    Retention indicies (RI)

    • DB5: 1296.0
    • Carbowax: 1642.0

  • Odor profile

    Citrus 82.45%
    Waxy 74.87%
    Fatty 72.2%
    Aldehydic 70.15%
    Floral 63.15%
    Green 62.17%
    Fresh 60.61%
    Orange 59.25%
    Rose 56.46%
    Fruity 47.93%

    Scent© AI

  • Properties

    XLogP3-AA
    3.8

    Molecular weight
    168.28 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Moderately slow

    Boiling point

    • 98.00 to 100.00 °C. @ 3.00 mm Hg

    Flash point est.
    99.43 ˚C

    Solubility expt.

    • 30 mg/L @ 20 °C (exp)
    • soluble in propylene glycol and most fixed oils; insoluble in glycerol and water

  • Synonyms

    • 10-Undecenal
    • 112-45-8
    • Undec-10-enal
    • Undecylenic aldehyde
    • Hendecenal
    • 10-UNDECEN-1-AL
    • Undecylenaldehyde
    • 1-Undecen-10-al
    • 10-Undecylenealdehyde
    • 10-Hendecenal
    • C-11 aldehyde, undecylenic
    • Aldehyde C-11, undecylenic
    • 10-Undecenyl aldehyde
    • 10-Undecylenic aldehyde
    • undecylenal
    • FEMA No. 3095
    • Undecylene aldehyde
    • NSC 44900
    • DU1OTA08RY
    • Aldehyde C-11 undecylenic
    • EINECS 203-973-1
    • BRN 1746480
    • Undec-10-en-al
    • n-Undecylenic aldehyde
    • AI3-03940
    • undec-10-en-1-al
    • MFCD00007032
    • NSC-44900
    • 10-UNDECENAL [FCC]
    • 10-UNDECENAL [FHFI]
    • DTXSID3037757
    • EC 203-973-1
    • 4-01-00-03520 (Beilstein Handbook Reference)
    • 10-UNDECEN-1-AL (ALDEHYDE C-11 UNDECYLENIC)
    • UNII-DU1OTA08RY
    • n-UNDECYLENIC ALDEHYDE (10-1)
    • UNDECYLENAL [INCI]
    • 10-Undecen-1-yl aldehyde
    • Undecylenic aldehyde, 95%
    • WLN: VH9U1
    • SCHEMBL107549
    • CHEMBL3185269
    • DTXCID1017757
    • FEMA 3095
    • CHEBI:125536
    • NSC44900
    • STR02813
    • Tox21_302293
    • LMFA06000067
    • 10-Undecenyl Aldehyde, 10-Undecenal
    • AKOS015902232
    • CS-W020162
    • HY-W018829
    • NCGC00164054-01
    • NCGC00255582-01
    • 10-Undecenal, >=95%, FG, stabilized
    • CAS-112-45-8
    • SY051707
    • DB-041093
    • 10-Undecenal (stabilized with a-tocopherol)
    • NS00013321
    • U0011
    • D92749
    • EN300-1720825
    • BRD-K33235400-001-01-2
    • Q20033560
    • 203-973-1

  • Applications

    10-Undecenal (CAS 112-45-8, also known as undecylenic aldehyde) is widely used in perfumery to deliver bright aldehydic–citrus, green, waxy notes that boost diffusion and lift in citrus, floral, and soapy accords for fine fragrances, soaps, detergents, fabric softeners, candles, and home care; as a flavor ingredient at trace levels, it reinforces orange peel/zesty and orange blossom facets in beverages, confectionery, chewing gum, and baked goods; synthetically, its terminal alkene–aldehyde functionality makes it a versatile intermediate: it can be reduced to 10-undecenol, oxidized to 10-undecenoic acid (enabling routes to surfactants, esters, lactones, and even nylon-11 monomer chemistry), and engaged in epoxidation/thiol–ene/hydroformylation to access long-chain derivatives, macrocyclic musk components, and pheromone building blocks; in materials science, the terminal double bond enables thiol–ene “click” grafting onto polymers and surfaces, while the aldehyde forms Schiff bases with amines for immobilization of reagents/enzymes, sensor fabrication, functional coatings, and fragrance microencapsulation; in personal and home care, aldehydic character is also leveraged for deodorizing/freshening effects, and the molecule has been studied as a component in insect attractant/repellent blends; observe IFRA/food-use limits and standard safety practices, as 10-undecenal may cause skin sensitization and is oxidation-prone, requiring cool, airtight storage away from light/strong oxidants.

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 1503.89
    methanol 1274.26
    isopropanol 1494.27
    water 0.02
    ethyl acetate 1722.06
    n-propanol 1374.18
    acetone 2226.9
    n-butanol 1420.14
    acetonitrile 796.14
    DMF 1069.18
    toluene 615.59
    isobutanol 1017.85
    1,4-dioxane 1739.72
    methyl acetate 906.68
    THF 3484.74
    2-butanone 1771.0
    n-pentanol 1036.2
    sec-butanol 1238.13
    n-hexane 905.05
    ethylene glycol 98.98
    NMP 911.53
    cyclohexane 930.99
    DMSO 2231.21
    n-butyl acetate 1686.67
    n-octanol 358.19
    chloroform 2148.49
    n-propyl acetate 1315.32
    acetic acid 581.15
    dichloromethane 2326.29
    cyclohexanone 2300.93
    propylene glycol 252.83
    isopropyl acetate 1041.17
    DMAc 658.89
    2-ethoxyethanol 932.99
    isopentanol 1247.57
    n-heptane 428.04
    ethyl formate 585.34
    1,2-dichloroethane 1963.41
    n-hexanol 1209.3
    2-methoxyethanol 1430.24
    isobutyl acetate 722.52
    tetrachloromethane 442.17
    n-pentyl acetate 733.32
    transcutol 3636.31
    n-heptanol 371.37
    ethylbenzene 373.16
    MIBK 983.93
    2-propoxyethanol 1357.27
    tert-butanol 1641.94
    MTBE 1645.28
    2-butoxyethanol 641.42
    propionic acid 650.14
    o-xylene 331.47
    formic acid 91.39
    diethyl ether 2440.57
    m-xylene 416.65
    p-xylene 408.97
    chlorobenzene 705.78
    dimethyl carbonate 175.48
    n-octane 104.71
    formamide 158.88
    cyclopentanone 2105.13
    2-pentanone 1912.31
    anisole 567.21
    cyclopentyl methyl ether 1957.53
    gamma-butyrolactone 1701.31
    1-methoxy-2-propanol 1368.28
    pyridine 1424.18
    3-pentanone 1079.65
    furfural 1093.97
    n-dodecane 44.82
    diethylene glycol 552.05
    diisopropyl ether 663.17
    tert-amyl alcohol 1187.97
    acetylacetone 1192.6
    n-hexadecane 53.42
    acetophenone 495.46
    methyl propionate 917.96
    isopentyl acetate 1274.47
    trichloroethylene 2469.31
    n-nonanol 315.92
    cyclohexanol 1313.02
    benzyl alcohol 448.35
    2-ethylhexanol 821.31
    isooctanol 351.42
    dipropyl ether 1671.39
    1,2-dichlorobenzene 617.05
    ethyl lactate 312.13
    propylene carbonate 888.58
    n-methylformamide 493.38
    2-pentanol 1157.01
    n-pentane 495.85
    1-propoxy-2-propanol 1279.27
    1-methoxy-2-propyl acetate 1027.35
    2-(2-methoxypropoxy) propanol 513.55
    mesitylene 293.58
    ε-caprolactone 1524.57
    p-cymene 253.08
    epichlorohydrin 2099.56
    1,1,1-trichloroethane 1598.43
    2-aminoethanol 339.08
    morpholine-4-carbaldehyde 975.23
    sulfolane 1811.55
    2,2,4-trimethylpentane 138.46
    2-methyltetrahydrofuran 2847.47
    n-hexyl acetate 830.14
    isooctane 133.7
    2-(2-butoxyethoxy)ethanol 781.02
    sec-butyl acetate 816.74
    tert-butyl acetate 1042.78
    decalin 247.01
    glycerin 259.29
    diglyme 1489.99
    acrylic acid 359.13
    isopropyl myristate 298.59
    n-butyric acid 1461.08
    acetyl acetate 586.94
    di(2-ethylhexyl) phthalate 197.8
    ethyl propionate 958.0
    nitromethane 899.71
    1,2-diethoxyethane 1800.7
    benzonitrile 614.93
    trioctyl phosphate 162.03
    1-bromopropane 1856.76
    gamma-valerolactone 2001.74
    n-decanol 222.72
    triethyl phosphate 308.5
    4-methyl-2-pentanol 584.15
    propionitrile 974.3
    vinylene carbonate 621.15
    1,1,2-trichlorotrifluoroethane 1018.55
    DMS 405.29
    cumene 235.26
    2-octanol 283.46
    2-hexanone 1419.74
    octyl acetate 324.85
    limonene 526.35
    1,2-dimethoxyethane 1746.35
    ethyl orthosilicate 336.67
    tributyl phosphate 237.0
    diacetone alcohol 910.86
    N,N-dimethylaniline 345.82
    acrylonitrile 774.51
    aniline 627.89
    1,3-propanediol 628.27
    bromobenzene 806.7
    dibromomethane 1961.66
    1,1,2,2-tetrachloroethane 2155.09
    2-methyl-cyclohexyl acetate 622.34
    tetrabutyl urea 286.77
    diisobutyl methanol 489.57
    2-phenylethanol 505.17
    styrene 492.91
    dioctyl adipate 394.75
    dimethyl sulfate 280.07
    ethyl butyrate 1114.21
    methyl lactate 282.82
    butyl lactate 462.4
    diethyl carbonate 521.51
    propanediol butyl ether 472.28
    triethyl orthoformate 653.98
    p-tert-butyltoluene 243.91
    methyl 4-tert-butylbenzoate 381.61
    morpholine 2474.91
    tert-butylamine 1228.33
    n-dodecanol 165.83
    dimethoxymethane 1037.67
    ethylene carbonate 607.85
    cyrene 367.88
    2-ethoxyethyl acetate 787.67
    2-ethylhexyl acetate 1009.56
    1,2,4-trichlorobenzene 634.32
    4-methylpyridine 1298.81
    dibutyl ether 1128.6
    2,6-dimethyl-4-heptanol 489.57
    DEF 1358.04
    dimethyl isosorbide 861.15
    tetrachloroethylene 1474.52
    eugenol 350.53
    triacetin 556.86
    span 80 493.94
    1,4-butanediol 227.01
    1,1-dichloroethane 1995.34
    2-methyl-1-pentanol 858.73
    methyl formate 291.68
    2-methyl-1-butanol 1034.31
    n-decane 102.42
    butyronitrile 1300.21
    3,7-dimethyl-1-octanol 448.56
    1-chlorooctane 371.07
    1-chlorotetradecane 114.16
    n-nonane 122.08
    undecane 64.01
    tert-butylcyclohexane 217.29
    cyclooctane 250.5
    cyclopentanol 1171.2
    tetrahydropyran 3466.47
    tert-amyl methyl ether 1075.7
    2,5,8-trioxanonane 856.62
    1-hexene 1900.33
    2-isopropoxyethanol 742.94
    2,2,2-trifluoroethanol 118.99
    methyl butyrate 1299.15

    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) 0.1%
Phaeomeria speciosa Phaeomeria speciosa Koord., (Etlingera elatior (Jack) R.M. Smith), Zingib. 1.42%
Calamus (Bangladesh) root 8015-79-0 Acorus calamus L., fam. Araceae 0.03%