2-Methylundecanal

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  • Identifiers

    CAS number
    110-41-8

    Molecular formula
    C12H24O

    SMILES
    CCCCCCCCCC(C)C=O

    Safety labels

    Irritant
    Irritant

    Environmental Hazard
    Environmental

    Retention indicies (RI)

    • DB5: 1305.29
    • Carbowax: 1599.71

  • Odor profile

    Citrus 78.26%
    Waxy 71.87%
    Fatty 69.5%
    Orange 60.03%
    Aldehydic 59.03%
    Fresh 58.5%
    Fruity 55.49%
    Green 53.68%
    Floral 49.07%
    Sweet 47.0%

    Scent© AI

  • Properties

    XLogP3-AA
    4.9

    Molecular weight
    184.32 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Slow

    Boiling point est.
    238°C

    Flash point est.
    98.9 ˚C

    Solubility expt.

    • soluble in fixed oils, alcohol, and propylene glycol (solution may be turbid); insoluble in glycerol

  • Synonyms

    • 2-Methylundecanal
    • 110-41-8
    • UNDECANAL, 2-METHYL-
    • Methylnonylacetaldehyde
    • Aldehyde M.N.A.
    • Aldehyde C-12
    • Methyl-n-nonylacetaldehyde
    • 2-Methylhendecanal
    • 2-methyl Undecanal
    • Methylnonylacetic aldehyde
    • Aldehyde C-12 mna
    • Methyl n-nonyl acetaldehyde
    • Methyl nonyl acetic aldehyde
    • 2-Methyl-1-undecanal
    • FEMA No. 2749
    • Methyl nonyl acetaldehyde
    • Methyl n-nonyl acetic aldehyde
    • UNII-S94QNS2VY5
    • EINECS 203-765-0
    • S94QNS2VY5
    • NSC 46127
    • Aldehyde C-12, M.N.A.
    • BRN 1758291
    • DTXSID9047629
    • AI3-03960
    • NSC-46127
    • 2-METHYL-UNDECANAL
    • 2-METHYLUNDECANAL [FCC]
    • DTXCID7027629
    • 2-METHYLUNDECANAL [FHFI]
    • EC 203-765-0
    • 4-01-00-03383 (Beilstein Handbook Reference)
    • 2-METHYL UNDECANAL (ALDEHYDE C-12 MNA)
    • 2Methylhendecanal
    • Aldehyde MNA
    • Undecanal, 2methyl
    • methylnonylacetaldehyd
    • Methylnnonylacetaldehyde
    • 2-Methylnonylacetaldehyde
    • Methyl nnonyl acetaldehyde
    • Aldehyde C12, M.N.A.
    • SCHEMBL22700
    • Methyl nnonyl acetic aldehyde
    • CHEMBL3182849
    • FEMA 2749
    • CHEBI:229419
    • 2-Methylundecanal, >=94%, FCC
    • NSC46127
    • Tox21_302620
    • BBL027630
    • MFCD00006990
    • STL373574
    • AKOS009159277
    • NCGC00256900-01
    • CAS-110-41-8
    • VS-08572
    • DB-040918
    • NS00006638
    • E77645
    • Q209447
    • 203-765-0

  • Applications

    2-Methylundecanal (CAS 110-41-8) is a long-chain aliphatic aldehyde with a bright citrus–waxy, slightly fatty aldehydic odor; it is widely used as a fragrance ingredient in fine fragrances, soaps, detergents, and home-care products to add sparkle, lift, and diffusion to top notes, reinforce clean soapy facets, and improve fabric substantivity; it performs well in alkaline systems (e.g., soap bases, laundry powders) and at very low dosages to tune citrus/aldehydic accords in both classic and modern compositions, and is also employed in air care, candles, fabric fresheners, and fragrance microcapsules; beyond perfumery it serves as an organic intermediate (reduction to 2-methylundecanol, oxidation to 2-methylundecanoic acid, formation of oximes/Schiff bases); safety considerations include potential irritation/sensitization, adherence to IFRA limits, and storage tightly closed, cool, and protected from oxidation.

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 6836.46
    methanol 4327.13
    isopropanol 8932.36
    water 0.02
    ethyl acetate 11267.32
    n-propanol 7114.89
    acetone 12822.27
    n-butanol 7328.93
    acetonitrile 6393.71
    DMF 5125.37
    toluene 2722.11
    isobutanol 5701.06
    1,4-dioxane 7624.67
    methyl acetate 5656.15
    THF 12658.14
    2-butanone 10550.62
    n-pentanol 4577.78
    sec-butanol 7037.04
    n-hexane 4827.57
    ethylene glycol 190.93
    NMP 3071.34
    cyclohexane 4732.64
    DMSO 5343.31
    n-butyl acetate 11072.6
    n-octanol 1666.65
    chloroform 10740.35
    n-propyl acetate 8226.61
    acetic acid 2243.7
    dichloromethane 11208.46
    cyclohexanone 12315.55
    propylene glycol 638.99
    isopropyl acetate 7081.91
    DMAc 2874.61
    2-ethoxyethanol 3709.21
    isopentanol 6711.44
    n-heptane 2173.27
    ethyl formate 3975.34
    1,2-dichloroethane 9534.62
    n-hexanol 5359.78
    2-methoxyethanol 5458.42
    isobutyl acetate 4108.82
    tetrachloromethane 2563.16
    n-pentyl acetate 4553.47
    transcutol 10818.24
    n-heptanol 1900.04
    ethylbenzene 1732.59
    MIBK 5323.56
    2-propoxyethanol 5626.19
    tert-butanol 10010.23
    MTBE 11945.06
    2-butoxyethanol 3001.38
    propionic acid 2924.37
    o-xylene 1462.43
    formic acid 266.54
    diethyl ether 14517.22
    m-xylene 1749.96
    p-xylene 2128.68
    chlorobenzene 3612.59
    dimethyl carbonate 724.62
    n-octane 609.55
    formamide 572.46
    cyclopentanone 8845.06
    2-pentanone 11422.72
    anisole 2605.67
    cyclopentyl methyl ether 8416.63
    gamma-butyrolactone 6916.24
    1-methoxy-2-propanol 5364.29
    pyridine 6930.49
    3-pentanone 5858.2
    furfural 4306.88
    n-dodecane 216.56
    diethylene glycol 1628.0
    diisopropyl ether 3973.65
    tert-amyl alcohol 7064.89
    acetylacetone 5762.99
    n-hexadecane 266.21
    acetophenone 2145.0
    methyl propionate 5108.28
    isopentyl acetate 8539.6
    trichloroethylene 11762.98
    n-nonanol 1419.02
    cyclohexanol 6444.86
    benzyl alcohol 1725.07
    2-ethylhexanol 4161.62
    isooctanol 1809.92
    dipropyl ether 9153.44
    1,2-dichlorobenzene 2970.91
    ethyl lactate 1360.3
    propylene carbonate 3847.76
    n-methylformamide 2597.94
    2-pentanol 6163.6
    n-pentane 2417.28
    1-propoxy-2-propanol 6303.85
    1-methoxy-2-propyl acetate 5314.04
    2-(2-methoxypropoxy) propanol 1629.06
    mesitylene 1222.77
    ε-caprolactone 8290.05
    p-cymene 1206.66
    epichlorohydrin 8713.23
    1,1,1-trichloroethane 9503.79
    2-aminoethanol 948.67
    morpholine-4-carbaldehyde 3876.5
    sulfolane 5671.67
    2,2,4-trimethylpentane 682.72
    2-methyltetrahydrofuran 12366.91
    n-hexyl acetate 4450.48
    isooctane 668.28
    2-(2-butoxyethoxy)ethanol 2695.73
    sec-butyl acetate 5396.63
    tert-butyl acetate 6229.46
    decalin 1114.36
    glycerin 585.45
    diglyme 5685.39
    acrylic acid 1400.52
    isopropyl myristate 1392.01
    n-butyric acid 7869.16
    acetyl acetate 3254.72
    di(2-ethylhexyl) phthalate 719.76
    ethyl propionate 6013.61
    nitromethane 4360.05
    1,2-diethoxyethane 8414.72
    benzonitrile 3204.1
    trioctyl phosphate 669.26
    1-bromopropane 9906.0
    gamma-valerolactone 9395.5
    n-decanol 934.95
    triethyl phosphate 1325.45
    4-methyl-2-pentanol 2832.15
    propionitrile 6848.34
    vinylene carbonate 2858.14
    1,1,2-trichlorotrifluoroethane 3656.5
    DMS 1712.72
    cumene 1066.62
    2-octanol 1579.47
    2-hexanone 7826.1
    octyl acetate 1474.78
    limonene 2590.81
    1,2-dimethoxyethane 9449.4
    ethyl orthosilicate 1493.02
    tributyl phosphate 997.93
    diacetone alcohol 4301.89
    N,N-dimethylaniline 1381.81
    acrylonitrile 4859.59
    aniline 2811.66
    1,3-propanediol 2257.18
    bromobenzene 4005.08
    dibromomethane 9520.59
    1,1,2,2-tetrachloroethane 9430.67
    2-methyl-cyclohexyl acetate 2788.25
    tetrabutyl urea 1145.26
    diisobutyl methanol 2329.4
    2-phenylethanol 2018.19
    styrene 2372.41
    dioctyl adipate 1571.21
    dimethyl sulfate 957.6
    ethyl butyrate 7033.9
    methyl lactate 1089.15
    butyl lactate 2227.96
    diethyl carbonate 2896.17
    propanediol butyl ether 1689.82
    triethyl orthoformate 3550.36
    p-tert-butyltoluene 1145.51
    methyl 4-tert-butylbenzoate 1453.35
    morpholine 11239.38
    tert-butylamine 7469.72
    n-dodecanol 683.79
    dimethoxymethane 4252.19
    ethylene carbonate 3176.83
    cyrene 1052.75
    2-ethoxyethyl acetate 3973.53
    2-ethylhexyl acetate 6224.68
    1,2,4-trichlorobenzene 2882.53
    4-methylpyridine 7312.73
    dibutyl ether 5977.75
    2,6-dimethyl-4-heptanol 2329.4
    DEF 7816.85
    dimethyl isosorbide 2773.91
    tetrachloroethylene 6209.53
    eugenol 1271.92
    triacetin 2077.13
    span 80 1649.0
    1,4-butanediol 761.72
    1,1-dichloroethane 11995.15
    2-methyl-1-pentanol 3972.15
    methyl formate 1399.81
    2-methyl-1-butanol 5296.84
    n-decane 534.14
    butyronitrile 9732.34
    3,7-dimethyl-1-octanol 2107.01
    1-chlorooctane 1919.52
    1-chlorotetradecane 529.46
    n-nonane 662.54
    undecane 319.35
    tert-butylcyclohexane 1076.59
    cyclooctane 1158.79
    cyclopentanol 5110.09
    tetrahydropyran 17191.92
    tert-amyl methyl ether 6385.17
    2,5,8-trioxanonane 2560.3
    1-hexene 10654.77
    2-isopropoxyethanol 3223.48
    2,2,2-trifluoroethanol 462.08
    methyl butyrate 8635.13

    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
Amomum ptycholimatum Amomum ptycholimatum D. Fang, fam. Zingiberaceae 1.8%
Armoise flower 8008-93-3 Artemisia vulgaris L., fam. Asteraceae (Compositae) 0.05%
Bergamot (China) 5 8007-75-8 Citrus bergamia Risso et Poiteau, fam. Rutaceae 0.23%
Bergamot (China) 2 8007-75-8 Citrus bergamia Risso et Poiteau, fam. Rutaceae 0.21%
Bergamot (China) 3 8007-75-8 Citrus bergamia Risso et Poiteau, fam. Rutaceae 0.07%
Bergamot (China) 4 8007-75-8 Citrus bergamia Risso et Poiteau, fam. Rutaceae 0.08%
Bergamot (Italy, Calabria) 4 8007-75-8 Citrus bergamia Risso et Poiteau, fam. Rutaceae 0.01%
Bergamot (Italy, Calabria) 6 8007-75-8 Citrus bergamia Risso et Poiteau, fam. Rutaceae 0.01%
Bergamot (Italy, Calabria) 5 8007-75-8 Citrus bergamia Risso et Poiteau, fam. Rutaceae 0.01%
Lemon (Spain) 7 84929-31-7 Citrus limon (L.) Burm. f., fam. Rutaceae 0.02%
Clementine (Italy) 1 Citrus clementina Hort. ex Tan., (C. deliciosa Ten. var. Clementina) 0.02%
Mandarin (Spain) 1 8008-31-9 Citrus deliciosa Tenore (C. reticulata Blanco, cv.mandarin), fam. Rutaceae 0.01%
Grapefruit (Israel) 2 8016-20-4 Citrus paradisi Macfayden, fam. Rutaceae 0.01%
Grapefruit (Israel) 1 8016-20-4 Citrus paradisi Macfayden, fam. Rutaceae 0.01%
Lemon (Italy-Sicily) 7 84929-31-7 Citrus limon (L.) Burm. f., fam. Rutaceae 0.03%
Lemon (Italy-Sicily) 4 84929-31-7 Citrus limon (L.) Burm. f., fam. Rutaceae 0.01%
Lemon (Italy-Sicily) 5 84929-31-7 Citrus limon (L.) Burm. f., fam. Rutaceae 0.01%
Lemon (Italy-Sicily) 6 84929-31-7 Citrus limon (L.) Burm. f., fam. Rutaceae 0.01%
Lime (Mexican, West Indian, Key) 1 8008-26-2 Citrus aurantifolia (Christm.) Swingle, fam. Rutaceae 0.03%
Lime (Mexican, West Indian, Key) 2 8008-26-2 Citrus aurantifolia (Christm.) Swingle, fam. Rutaceae 0.03%
Lime (Persian) 1 90063-52-8 Citrus latifolia Tanaka, fam. Rutaceae 0.02%
Linden blossom bract Tilia cordata Mill. (Tilia glabra Vent.), fam. Tiliaceae 0.05%
Lemon (Israel) 84929-31-7 Citrus limon (L.) Burm. f., fam. Rutaceae 0.02%
Mandarin (Italy) 2 8008-31-9 Citrus deliciosa Tenore (C. reticulata Blanco, cv.mandarin), fam. Rutaceae 0.01%
Mandarin (Italy) 1 8008-31-9 Citrus deliciosa Tenore (C. reticulata Blanco, cv.mandarin), fam. Rutaceae 0.02%
Satsuma mandarin peel 1 Citrus unshiu Marcovitch, fam. Rutaceae 0.01%
Orange, bitter (Spain) 1 72968-50-4 Citrus aurantium L., ssp. amara Engl., fam. Rutaceae 0.01%
Orange, bitter (Spain) 2 72968-50-4 Citrus aurantium L., ssp. amara Engl., fam. Rutaceae 0.01%
Orange, sweet (USA-Florida) 1 8028-48-6 Citrus sinensis (L.) Osbeck, cultivar Midseason, fam. Rutaceae 0.01%
Orange, sweet (USA-Florida) 4 8028-48-6 Citrus sinensis (L.) Osbeck, cultivar Valencia late, fam. Rutaceae 0.02%
Orange, sweet (Israel) 1 8028-48-6 Citrus sinensis (L.) Osbeck, fam. Rutaceae 0.01%
Orange, sweet (Israel) 2 8028-48-6 Citrus sinensis (L.) Osbeck, cultivar Shamouti, fam. Rutaceae 0.01%
Orange, sweet (Italy) 2 8028-48-6 Citrus sinensis (L.) Osbeck, cultivar Valencia late, fam. Rutaceae 0.01%
Orange, sweet (Spain) 1 8028-48-6 Citrus sinensis (L.) Osbeck, cultivar Valencia late, fam. Rutaceae 0.01%
Orange, sweet (USA-California) 1 8028-48-6 Citrus sinensis (L.) Osbeck, fam. Rutaceae 0.05%
Lime (Mexican, West Indian, Key) (Brazil) 8008-26-2 Citrus aurantifolia (Christm.) Swingle, fam. Rutaceae 0.05%
Mapo tangelo Citrus ssp. Mapo tangelo, fam. Rutaceae 0.01%
Mandarin (Italy) 3 8008-31-9 Citrus deliciosa Tenore (C. reticulata Blanco, cv.mandarin), fam. Rutaceae 0.01%
Grapefruit (Italy) 1 8016-20-4 Citrus paradisi Macfayden, fam. Rutaceae 0.01%
Orange, sweet (USA-Florida) 6 8028-48-6 Citrus sinensis (L.) Osbeck, cultivar Valencia late, fam. Rutaceae 0.02%
Lemon (USA-California) 84929-31-7 Citrus limon (L.) Burm. f., fam. Rutaceae 0.03%
Lemon (Italy-Sicily) 8 84929-31-7 Citrus limon (L.) Burm. f., fam. Rutaceae 0.03%
Etrog, peel Citrus medica L., cultivar ethrog Engl., fam. Rutaceae 0.02%
Polygonum minus (Kesom) Polygonum minus Huds., fam. Polygonaceae 0.75%
Daphne genkwa Daphne genkwa Sieb. et Zucc., fam. Thymelaeaceae 0.55%
Cilantro (Coriander leaf) 3 8008-52-4 Coriandrum sativum L., fam. Apiaceae (Umbelliferae) 0.5%
Narcissus poeticus absolute 8023-75-4 Narcissus poeticus L., fam. Amaryllidaceae 0.1%
Coriander fruit (Finland) 2 8008-52-4 Coriandrum sativum L., fam. Apiaceae (Umbelliferae) 0.01%
Coriander fruit (Finland) 1 8008-52-4 Coriandrum sativum L., fam. Apiaceae (Umbelliferae) 0.01%
Cilantro (Coriander leaf) 1 8008-52-4 Coriandrum sativum L., fam. Apiaceae (Umbelliferae) 3.04%