1,6-Dihydro-4-methyl-1-methylene-7-(1-methylethenyl)azulene

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  • Identifiers

    CAS number
    18454-60-9

    Molecular formula
    C15H16

    SMILES
    CC1=CCC(=CC2=C1C=CC2=C)C(=C)C

    Safety labels

  • Odor profile

    Fragrance
    Fruity 48.9%
    Woody 44.69%
    Spicy 35.39%
    Fresh 29.05%
    Sweet 28.08%
    Citrus 27.04%
    Mint 25.99%
    Herbal 25.49%
    Green 25.11%
    Tropical 22.94%

     

    Flavor
    Bitter 29.85%
    Basil 20.64%
    Oriental 19.95%
    Nitrile 19.5%
    Lovage 19.27%
    Taco 18.77%
    Very strong 18.59%
    Low 18.06%
    Indole 17.97%
    Citric 17.85%

     

    Odor impact est.
    Medium

  • Properties

    XLogP3-AA
    3.5

    pKa est.
    8.17 (weak base)

    Molecular weight
    196.29 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    320°C

    Flash point

    • 101.04 ˚C est.

  • Synonyms

    • Lactarofulvene
    • Lactarofulven
    • 7U2C8VV4S9
    • 1,6-Dihydro-4-methyl-1-methylene-7-(1-methylethenyl)azulene
    • 4-methyl-1-methylidene-7-prop-1-en-2-yl-6H-azulene
    • Azulene, 1,6-dihydro-4-methyl-1-methylene-7-(1-methylethenyl)-
    • 1,6-Dihydro-7-isopropenyl-4-methyl-1-methyleneazulene, 8CI
    • RefChem:196854
    • UNII-7U2C8VV4S9
    • 18454-60-9
    • CHEBI:173541
    • DTXSID001187398
    • 4-methyl-1-methylidene-7-(prop-1-en-2-yl)-1,6-dihydroazulene
    • 18454-60-9

  • Applications

    For 1,6-Dihydro-4-methyl-1-methylene-7-(1-methylethenyl)azulene (CAS 18454-60-9), real-world applications are typically as a fragrance intermediate or odorant; as a precursor in cosmetics/personal care formulations; as a dye or pigment precursor for coatings and specialty inks; as an industrial building block in the synthesis of azulene-based compounds; and as a colorant-related additive for polymers and plastics.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 25.83
    methanol 14.21
    isopropanol 30.28
    water 0.02
    ethyl acetate 100.85
    n-propanol 34.44
    acetone 91.33
    n-butanol 41.99
    acetonitrile 37.02
    DMF 158.51
    toluene 219.84
    isobutanol 32.55
    1,4-dioxane 217.07
    methyl acetate 86.86
    THF 370.4
    2-butanone 136.69
    n-pentanol 41.43
    sec-butanol 43.27
    n-hexane 20.49
    ethylene glycol 2.98
    NMP 167.3
    cyclohexane 35.93
    DMSO 59.34
    n-butyl acetate 151.17
    n-octanol 54.58
    chloroform 278.26
    n-propyl acetate 82.46
    acetic acid 17.9
    dichloromethane 257.68
    cyclohexanone 190.93
    propylene glycol 8.7
    isopropyl acetate 77.89
    DMAc 185.84
    2-ethoxyethanol 43.82
    isopentanol 45.68
    n-heptane 37.46
    ethyl formate 46.11
    1,2-dichloroethane 137.51
    n-hexanol 82.59
    2-methoxyethanol 48.7
    isobutyl acetate 77.88
    tetrachloromethane 47.87
    n-pentyl acetate 95.84
    transcutol 173.87
    n-heptanol 51.91
    ethylbenzene 138.97
    MIBK 82.88
    2-propoxyethanol 85.35
    tert-butanol 51.67
    MTBE 98.67
    2-butoxyethanol 61.4
    propionic acid 23.39
    o-xylene 124.23
    formic acid 2.84
    diethyl ether 87.36
    m-xylene 138.67
    p-xylene 168.88
    chlorobenzene 143.25
    dimethyl carbonate 44.5
    n-octane 18.5
    formamide 9.3
    cyclopentanone 232.09
    2-pentanone 109.75
    anisole 181.89
    cyclopentyl methyl ether 146.53
    gamma-butyrolactone 158.94
    1-methoxy-2-propanol 56.6
    pyridine 265.77
    3-pentanone 104.07
    furfural 131.63
    n-dodecane 16.32
    diethylene glycol 31.41
    diisopropyl ether 44.39
    tert-amyl alcohol 58.03
    acetylacetone 111.59
    n-hexadecane 19.34
    acetophenone 145.75
    methyl propionate 82.27
    isopentyl acetate 148.48
    trichloroethylene 283.51
    n-nonanol 59.62
    cyclohexanol 54.86
    benzyl alcohol 88.71
    2-ethylhexanol 82.03
    isooctanol 49.39
    dipropyl ether 123.24
    1,2-dichlorobenzene 129.32
    ethyl lactate 33.22
    propylene carbonate 93.75
    n-methylformamide 32.53
    2-pentanol 37.64
    n-pentane 15.54
    1-propoxy-2-propanol 86.01
    1-methoxy-2-propyl acetate 130.39
    2-(2-methoxypropoxy) propanol 104.7
    mesitylene 84.83
    ε-caprolactone 148.98
    p-cymene 100.0
    epichlorohydrin 208.32
    1,1,1-trichloroethane 158.31
    2-aminoethanol 9.23
    morpholine-4-carbaldehyde 155.85
    sulfolane 136.45
    2,2,4-trimethylpentane 15.25
    2-methyltetrahydrofuran 226.51
    n-hexyl acetate 132.24
    isooctane 13.38
    2-(2-butoxyethoxy)ethanol 102.51
    sec-butyl acetate 78.39
    tert-butyl acetate 98.63
    decalin 32.02
    glycerin 10.73
    diglyme 184.01
    acrylic acid 17.85
    isopropyl myristate 82.8
    n-butyric acid 46.02
    acetyl acetate 64.69
    di(2-ethylhexyl) phthalate 73.03
    ethyl propionate 81.91
    nitromethane 44.12
    1,2-diethoxyethane 151.86
    benzonitrile 105.12
    trioctyl phosphate 47.82
    1-bromopropane 123.2
    gamma-valerolactone 199.23
    n-decanol 49.3
    triethyl phosphate 64.81
    4-methyl-2-pentanol 35.72
    propionitrile 55.1
    vinylene carbonate 85.32
    1,1,2-trichlorotrifluoroethane 70.42
    DMS 100.42
    cumene 93.78
    2-octanol 44.63
    2-hexanone 106.51
    octyl acetate 91.82
    limonene 121.6
    1,2-dimethoxyethane 149.65
    ethyl orthosilicate 65.38
    tributyl phosphate 57.59
    diacetone alcohol 75.66
    N,N-dimethylaniline 147.49
    acrylonitrile 53.65
    aniline 102.13
    1,3-propanediol 18.08
    bromobenzene 197.5
    dibromomethane 184.71
    1,1,2,2-tetrachloroethane 197.55
    2-methyl-cyclohexyl acetate 131.22
    tetrabutyl urea 85.35
    diisobutyl methanol 57.67
    2-phenylethanol 120.89
    styrene 151.65
    dioctyl adipate 103.7
    dimethyl sulfate 58.17
    ethyl butyrate 120.69
    methyl lactate 27.73
    butyl lactate 53.31
    diethyl carbonate 80.01
    propanediol butyl ether 45.5
    triethyl orthoformate 89.83
    p-tert-butyltoluene 95.47
    methyl 4-tert-butylbenzoate 131.12
    morpholine 202.4
    tert-butylamine 40.31
    n-dodecanol 41.57
    dimethoxymethane 111.33
    ethylene carbonate 65.87
    cyrene 94.61
    2-ethoxyethyl acetate 120.24
    2-ethylhexyl acetate 140.94
    1,2,4-trichlorobenzene 154.15
    4-methylpyridine 251.72
    dibutyl ether 105.66
    2,6-dimethyl-4-heptanol 57.67
    DEF 122.1
    dimethyl isosorbide 210.6
    tetrachloroethylene 114.97
    eugenol 103.55
    triacetin 102.67
    span 80 85.81
    1,4-butanediol 10.38
    1,1-dichloroethane 134.67
    2-methyl-1-pentanol 52.61
    methyl formate 27.82
    2-methyl-1-butanol 46.16
    n-decane 25.12
    butyronitrile 66.07
    3,7-dimethyl-1-octanol 66.78
    1-chlorooctane 70.41
    1-chlorotetradecane 36.24
    n-nonane 22.63
    undecane 19.85
    tert-butylcyclohexane 32.18
    cyclooctane 18.45
    cyclopentanol 53.02
    tetrahydropyran 221.5
    tert-amyl methyl ether 91.54
    2,5,8-trioxanonane 158.4
    1-hexene 68.22
    2-isopropoxyethanol 48.69
    2,2,2-trifluoroethanol 7.67
    methyl butyrate 99.92

    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