alpha-Fenchene

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  • Identifiers

    CAS number
    471-84-1

    Molecular formula
    C10H16

    SMILES
    CC1(C2CCC1C(=C)C2)C

    Safety labels

    Irritant
    Irritant

    Health Hazard
    Health

    Environmental Hazard
    Environmental

    Retention indicies (RI)

    • DB5: 951.6
    • Carbowax: 1059.17

  • Odor profile

    Woody 79.94%
    Sweet 57.88%
    Camphoreous 50.5%
    Herbal 49.35%
    Green 47.48%
    Pine 47.27%
    Fresh 46.96%
    Terpenic 46.35%
    Spicy 44.99%
    Dry 43.57%

    Scent© AI

  • Properties

    XLogP3-AA
    3.1

    pKa est.
    10.3 (weak base)

    Molecular weight
    136.23 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Very fast

    Boiling point est.
    165°C

    Flash point est.
    29.85 ˚C

  • Synonyms

    • alpha-Fenchene
    • 471-84-1
    • 7,7-DIMETHYL-2-METHYLIDENEBICYCLO[2.2.1]HEPTANE
    • Bicyclo[2.2.1]heptane, 7,7-dimethyl-2-methylene-
    • 7,7-Dimethyl-2-methylenebicyclo(2.2.1)heptane
    • Bicyclo2.2.1heptane, 7,7-dimethyl-2-methylene-
    • Bicyclo(2.2.1)heptane, 7,7-dimethyl-2-methylene-
    • (-)-7,7-Dimethyl-2-methylenebicyclo[2.2.1]heptane
    • Norbornane, 7,7-dimethyl-2-methylene-
    • 7,7-Dimethyl-2-methylenebicyclo[2.2.1]heptane
    • .alpha.-Fenchene
    • CHEBI:89044
    • DTXSID60861972
    • 7,7-Dimethyl-2-methylenenorbornane
    • 7,7-dimethyl-2-methylene-norbornane
    • NS00126563
    • 7,7-Dimethyl-2-methylen-bicyclo(2,2,1)heptane
    • 7,7-Dimethyl-2-methylenebicyclo[2.2.1]heptane #
    • Q24715140
    • 610-330-2

  • Applications

    Alpha-fenchene (CAS 471-84-1) is a bicyclic monoterpene with a fresh piney, camphoraceous, slightly citrus odor, used primarily in fragrances to add bright herbal/pine facets to perfumes, soaps, detergents, candles and air-care; in flavors it may be applied at very low levels to enhance citrus–mint–herbal notes in chewing gum, beverages and savory seasonings within applicable safety limits; in aroma chemistry it serves as an intermediate for oxidation/hydrogenation to fenchone, fenchol and camphor-type derivatives, and for preparing epoxides and other terpene building blocks; in essential-oil analytics it is employed as a reference/marker for qualitative–quantitative GC-MS profiling to help authenticate raw materials; in R&D it is studied for odor properties, typical reactions (epoxidation, hydroboration, halogenation) and exploratory insecticidal/antimicrobial potential at lab scale; note it is a flammable liquid prone to autoxidation, so antioxidants, tight packaging and compliance with IFRA/food regulations are recommended.

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 1272.68
    methanol 1087.68
    isopropanol 1237.62
    water 6.43
    ethyl acetate 1847.49
    n-propanol 1176.94
    acetone 1280.87
    n-butanol 1259.75
    acetonitrile 1298.13
    DMF 950.43
    toluene 1214.25
    isobutanol 871.68
    1,4-dioxane 2571.57
    methyl acetate 1294.81
    THF 3537.38
    2-butanone 1117.57
    n-pentanol 613.51
    sec-butanol 911.96
    n-hexane 351.64
    ethylene glycol 192.78
    NMP 605.97
    cyclohexane 587.88
    DMSO 524.72
    n-butyl acetate 1602.9
    n-octanol 473.4
    chloroform 3092.89
    n-propyl acetate 711.14
    acetic acid 752.55
    dichloromethane 2259.39
    cyclohexanone 1275.91
    propylene glycol 312.87
    isopropyl acetate 1401.2
    DMAc 768.0
    2-ethoxyethanol 796.54
    isopentanol 1151.03
    n-heptane 398.91
    ethyl formate 867.27
    1,2-dichloroethane 1333.46
    n-hexanol 1323.38
    2-methoxyethanol 1389.97
    isobutyl acetate 597.47
    tetrachloromethane 935.16
    n-pentyl acetate 639.55
    transcutol 2841.83
    n-heptanol 538.78
    ethylbenzene 468.88
    MIBK 1016.6
    2-propoxyethanol 1751.82
    tert-butanol 1397.91
    MTBE 1894.1
    2-butoxyethanol 823.73
    propionic acid 680.37
    o-xylene 616.52
    formic acid 271.53
    diethyl ether 2127.87
    m-xylene 906.23
    p-xylene 601.22
    chlorobenzene 1052.67
    dimethyl carbonate 542.97
    n-octane 135.61
    formamide 481.3
    cyclopentanone 1384.7
    2-pentanone 1176.11
    anisole 900.43
    cyclopentyl methyl ether 1536.69
    gamma-butyrolactone 1491.81
    1-methoxy-2-propanol 1269.05
    pyridine 1553.7
    3-pentanone 909.3
    furfural 1156.97
    n-dodecane 90.17
    diethylene glycol 929.22
    diisopropyl ether 1036.39
    tert-amyl alcohol 947.55
    acetylacetone 1233.99
    n-hexadecane 102.22
    acetophenone 561.15
    methyl propionate 1059.82
    isopentyl acetate 1448.94
    trichloroethylene 2041.77
    n-nonanol 450.71
    cyclohexanol 902.09
    benzyl alcohol 494.69
    2-ethylhexanol 802.84
    isooctanol 473.6
    dipropyl ether 1359.65
    1,2-dichlorobenzene 894.77
    ethyl lactate 297.1
    propylene carbonate 911.11
    n-methylformamide 678.81
    2-pentanol 961.07
    n-pentane 477.8
    1-propoxy-2-propanol 1382.99
    1-methoxy-2-propyl acetate 1539.08
    2-(2-methoxypropoxy) propanol 747.12
    mesitylene 627.07
    ε-caprolactone 1141.49
    p-cymene 471.08
    epichlorohydrin 1700.92
    1,1,1-trichloroethane 1750.6
    2-aminoethanol 465.78
    morpholine-4-carbaldehyde 1103.39
    sulfolane 818.17
    2,2,4-trimethylpentane 225.92
    2-methyltetrahydrofuran 2074.26
    n-hexyl acetate 870.3
    isooctane 275.64
    2-(2-butoxyethoxy)ethanol 1108.9
    sec-butyl acetate 651.44
    tert-butyl acetate 1455.07
    decalin 239.22
    glycerin 394.6
    diglyme 1816.11
    acrylic acid 467.92
    isopropyl myristate 429.39
    n-butyric acid 1235.72
    acetyl acetate 1160.07
    di(2-ethylhexyl) phthalate 302.31
    ethyl propionate 725.49
    nitromethane 1098.68
    1,2-diethoxyethane 1898.54
    benzonitrile 785.68
    trioctyl phosphate 223.3
    1-bromopropane 1279.87
    gamma-valerolactone 1595.66
    n-decanol 344.75
    triethyl phosphate 404.11
    4-methyl-2-pentanol 754.32
    propionitrile 1289.74
    vinylene carbonate 969.35
    1,1,2-trichlorotrifluoroethane 746.27
    DMS 684.22
    cumene 370.68
    2-octanol 351.62
    2-hexanone 666.01
    octyl acetate 469.44
    limonene 600.86
    1,2-dimethoxyethane 1413.81
    ethyl orthosilicate 445.17
    tributyl phosphate 307.76
    diacetone alcohol 941.29
    N,N-dimethylaniline 560.46
    acrylonitrile 1119.82
    aniline 1096.69
    1,3-propanediol 835.33
    bromobenzene 1182.03
    dibromomethane 1641.19
    1,1,2,2-tetrachloroethane 1559.23
    2-methyl-cyclohexyl acetate 647.71
    tetrabutyl urea 322.58
    diisobutyl methanol 572.83
    2-phenylethanol 851.35
    styrene 539.29
    dioctyl adipate 435.41
    dimethyl sulfate 434.74
    ethyl butyrate 1036.47
    methyl lactate 421.65
    butyl lactate 414.94
    diethyl carbonate 691.63
    propanediol butyl ether 526.59
    triethyl orthoformate 807.69
    p-tert-butyltoluene 520.96
    methyl 4-tert-butylbenzoate 622.93
    morpholine 2269.28
    tert-butylamine 1225.12
    n-dodecanol 271.55
    dimethoxymethane 1359.98
    ethylene carbonate 913.23
    cyrene 377.71
    2-ethoxyethyl acetate 984.14
    2-ethylhexyl acetate 1145.84
    1,2,4-trichlorobenzene 872.96
    4-methylpyridine 1400.17
    dibutyl ether 845.11
    2,6-dimethyl-4-heptanol 572.83
    DEF 938.65
    dimethyl isosorbide 1187.58
    tetrachloroethylene 1148.61
    eugenol 534.12
    triacetin 636.74
    span 80 592.96
    1,4-butanediol 259.16
    1,1-dichloroethane 1749.74
    2-methyl-1-pentanol 596.37
    methyl formate 542.8
    2-methyl-1-butanol 888.04
    n-decane 154.05
    butyronitrile 1372.32
    3,7-dimethyl-1-octanol 623.02
    1-chlorooctane 388.82
    1-chlorotetradecane 185.46
    n-nonane 151.31
    undecane 113.79
    tert-butylcyclohexane 248.46
    cyclooctane 279.92
    cyclopentanol 817.98
    tetrahydropyran 2402.31
    tert-amyl methyl ether 1144.11
    2,5,8-trioxanonane 1198.05
    1-hexene 657.83
    2-isopropoxyethanol 656.07
    2,2,2-trifluoroethanol 350.38
    methyl butyrate 735.81

    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
Shanqiu Anaphalis margaritacea (L.) Benth.et Hook.(Shanqiu),fam.Asteraceae (Comp.) 1.74%
Balsamite/Costmary Chrysanthemum balsamita L., fam. Asteraceae (Compositae) 0.02%
Cedarleaf 3 8000-27-9 Thuja occidentalis L., fam. Taxodiaceae 1.09%
Eucalyptus cloeziana leaf (Chemotype 1) Eucalyptus cloeziana F. Muell., fam. Myrtaeceae 0.02%
Eucalyptus globulus (Spain) 1 8016-26-0 Eucalyptus globulus Labill., fam. Myrtaceae 0.04%
Galangal root (Indonesia) 8023-91-4 Alpinia galanga (L.) Willd., fam. Zingiberaceae 0.1%
Helichrysum italicum (Yugoslavia) 8023-95-8 Helichrysum italicum (Roth) G. Don (H. angustifolium D.C.), fam.Asteraceae 0.3%
Laurel leaf (Spain) 2 8006-78-8 Laurus nobilis L., fam. Lauraceae 0.2%
Laurel leaf (Spain) 3 8006-78-8 Laurus nobilis L., fam. Lauraceae 0.05%
Mentha requienii 1 Mentha requienii Bentham, fam. Lamiaceae (Labiatae) 0.8%
Mentha requienii 2 Mentha requienii Bentham, fam. Lamiaceae (Labiatae) 1.6%
Myrtle leaf, cultivated (Spain) 8008-46-6 Myrtus communis L., fam. Myrtaceae 0.01%
Oregano, turkish (Turkey) Origanum onites L., fam. Lamiaceae (Labiatae) 0.05%
Origanum syriacum (Turkey) 1 Origanum syriacum L. var. bevanii (Holmes), fam. Lamiaceae (Labiatae) 0.05%
Oregano, greek (Turkey) 1 84012-24-8 Origanum vulgare L. ssp. hirtum (Link) Ietsw., fam. Lamiaceae (Labiatae) 0.05%
Sequoia leaf 1 Sequoiadendron giganteum Buchh., fam. Taxodiaceae 0.01%
Eucalyptus brassiana Eucalyptus brassiana S.T. Blake, fam. Myrtaceae 0.02%
Juniperus flaccida var. flaccida Juniperus flaccida Schlecht, var. flaccida, fam. Cupressaceae 0.2%
Juniperus flaccida var. poblana Juniperus flaccida var. poblana Martinez, fam. Cupressaceae 0.05%
Eucalyptus pellita Eucalyptus pellita Benth., fam. Myrtaceae 0.15%
Cypress cones (Egypt) 8013-86-3 Cupressus sempervirens L. (C. fastigiata DC), fam. Cupressaceae 1.8%
Alpinia katsumadai stem (Vietnam) Alpinia katsumadai Hayata L., fam. Zingiberaceae 0.1%
Alpinia katsumadai leaf (Vietnam) Alpinia katsumadai Hayata L., fam. Zingiberaceae 0.2%
Pistacia lentiscus (Spain) 1a leaf 90082-83-0 Pistacia lentiscus L., fam. Anacardiaceae 0.04%
Nutmeg (Indonesia) 3 8008-45-5 Myristica fragrans Houtt., fam. Myristicaceae 0.1%
Olibanum, African (Somalia) 1 8016-36-2 Boswellia frereana Birdwood, fam. Burseraceae 0.1%
Cedarleaf 5 8000-27-9 Thuja occidentalis L., fam. Taxodiaceae 0.87%
Myrtle flower (Spain) 8008-46-6 Myrtus communis L., fam. Myrtaceae 0.03%
Myrtle unripe fruits (Spain) 8008-46-6 Myrtus communis L., fam. Myrtaceae 0.01%
Ageratum conyzoides (Ghana) 85480-32-6 Ageratum conyzoides L., fam. Asteraceae (Compositae) 0.01%
Lemon (India) 1 84929-31-7 Citrus limon (L.) Burm. f., cultivar "Plant Lemon-1", fam. Rutaceae 0.05%
Pepper, black (variety Muntok) 8006-82-4 Piper nigrum L., variety Muntok, fam. Piperaceae 0.04%
Fennel, bitter (Hungary) 8006-84-6 Foeniculum vulgare Miller, var. vulgare DC, fam. Apiaceae (Umbelliferae) 0.04%
Fennel, bitter (Spain) 1 8006-84-6 Foeniculum vulgare Miller, var. vulgare DC, fam. Apiaceae (Umbelliferae) 0.07%
Juniper leaf 2 8012-91-7 Juniperus communis L., fam. Cupressaceae 0.09%
Cypress (Algeria) 8013-86-3 Cupressus sempervirens L. (C. fastigiata DC), fam. Cupressaceae 0.77%
Wormwood (Mugwort) (U.S.A.) 2 8008-93-3 Artemisia absinthium L., fam. Asteraceae (Compositae) 0.18%
Wormwood (Mugwort) (U.S.A.) 3 8008-93-3 Artemisia absinthium L., fam. Asteraceae (Compositae) 0.4%
Cedarleaf (U.S.A.) 8000-27-9 Thuja occidentalis L., fam. Taxodiaceae 0.5%
Rhus coriaria Rhus coriaria L., fam. Anarcadiaceae 0.05%
Lilac, White, Picked Flower Headspace 1 Syringa vulgaris L., fam. Oleaceae 0.24%
Lilac, White, Picked Flower Headspace 2 Syringa vulgaris L., fam. Oleaceae 0.04%
Cedarleaf (Japan) 8000-27-9 Thuja occidentalis L., fam. Taxodiaceae 1.09%
Lemon leaf (petitgrain) 2 84929-31-7 Citrus limon (L.) Burm. f., fam. Rutaceae 0.01%
Litsea pungens (China) Litsea pungens Hemsl., fam. Lauraceae 0.36%
Lavandin (France) (Grosso) 2 8022-15-9 Lavandula x hybrida Rev. (L. x intermedia Emeric ex Loiesleur), Lamiaceae 0.01%
Lavandin (France) (Abrialis) 2 8022-15-9 Lavandula x hybrida Rev. (L. x intermedia Emeric ex Loiseleur), Lamiaceae 0.01%
Michelia yunnanensis flower headspace (China) Michelia yunnanensis Franch. ex Finet et Gagnep., fam. Magnoliaceae 0.39%
Dill herb (Europa) 8006-75-5 Anethum graveolens L., fam. Apiaceae (Umbelliferae) 0.05%
Juniperus rigida (Japan) 1 Juniperus rigida Mig., fam. Cupressaceae 0.05%