Bicyclopentyl

Overview IFRA Botanical Request a quote

  • Identifiers

    CAS number
    1636-39-1

    Molecular formula
    C10H18

    SMILES
    C1CCC(C1)C2CCCC2

  • Odor profile

    Sweet 44.42%
    Dry 36.9%
    Waxy 34.34%
    Woody 31.72%
    Musk 30.23%
    Amber 28.76%
    Animal 23.6%
    Citrus 21.21%
    Clean 20.44%
    Fresh 18.53%

    Scent© AI

  • Properties

    XLogP3-AA
    4.6

    pKa est.
    9.66 (weak base)

    Molecular weight
    138.25 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Fast

    Boiling point est.
    190°C

    Flash point est.
    49.81 ˚C

  • Synonyms

    • Bicyclopentyl
    • 1636-39-1
    • Cyclopentylcyclopentane
    • 1,1'-BICYCLOPENTYL
    • Bicyclopentane
    • Dicyclopentyl
    • Cyclopentane, cyclopentyl-
    • NSC-38865
    • 1,?1'-?Bicyclopentyl
    • Bicyclopentyl NSC 38865Cyclopentylcyclopentane
    • NSC38865
    • EINECS 216-666-2
    • 1,1'-BI(CYCLOPENTANE)
    • MAWOHFOSAIXURX-UHFFFAOYSA-
    • DTXSID80167625
    • C75YPF7243
    • NSC 38865
    • AKOS006271494
    • DB-318748
    • NS00049083
    • InChI=1/C10H18/c1-2-6-9(5-1)10-7-3-4-8-10/h9-10H,1-8H2

  • Applications

    Bicyclopentyl (CAS 1636-39-1) is a saturated, nonaromatic hydrocarbon comprising two cyclopentyl rings joined by a single C–C bond, used primarily as a steric- and lipophilicity-enhancing building block in organic synthesis for drug, agrochemical, functional additive, and ligand design; as a reference/standard in GC/GC–MS and mechanistic studies (retention-index calibration, mass-spectral benchmarking, probing hydrogenation/dehydrogenation and thermal stability of cycloalkanes); as a model substrate in fuel science and combustion/pyrolysis kinetics of high–energy-density polycycloalkanes; and as a nonpolar inert medium, diluent, or polymer-swelling agent where water-immiscible conditions are required; additionally, bicyclopentyl derivatives are applied to tune materials properties (solubility, surface energy, permeability) by introducing a bulky, hydrogen-rich, nonaromatic group.

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 425.07
    methanol 284.65
    isopropanol 548.74
    water 0.12
    ethyl acetate 1404.75
    n-propanol 634.66
    acetone 1531.61
    n-butanol 790.41
    acetonitrile 764.4
    DMF 1121.67
    toluene 1443.47
    isobutanol 611.59
    1,4-dioxane 2213.39
    methyl acetate 1108.47
    THF 4723.13
    2-butanone 1365.72
    n-pentanol 438.81
    sec-butanol 647.1
    n-hexane 990.75
    ethylene glycol 73.95
    NMP 1651.05
    cyclohexane 1756.02
    DMSO 1013.04
    n-butyl acetate 2029.55
    n-octanol 556.17
    chloroform 3552.58
    n-propyl acetate 930.32
    acetic acid 434.37
    dichloromethane 2931.66
    cyclohexanone 2650.1
    propylene glycol 161.26
    isopropyl acetate 1207.09
    DMAc 880.72
    2-ethoxyethanol 419.03
    isopentanol 807.18
    n-heptane 1369.23
    ethyl formate 617.64
    1,2-dichloroethane 2083.14
    n-hexanol 1048.24
    2-methoxyethanol 673.42
    isobutyl acetate 825.08
    tetrachloromethane 1096.32
    n-pentyl acetate 916.48
    transcutol 1433.1
    n-heptanol 538.69
    ethylbenzene 667.24
    MIBK 1149.36
    2-propoxyethanol 1141.7
    tert-butanol 846.99
    MTBE 1558.34
    2-butoxyethanol 641.8
    propionic acid 581.35
    o-xylene 827.41
    formic acid 58.53
    diethyl ether 1791.05
    m-xylene 915.78
    p-xylene 793.56
    chlorobenzene 1501.78
    dimethyl carbonate 459.77
    n-octane 427.43
    formamide 94.98
    cyclopentanone 3286.12
    2-pentanone 1473.6
    anisole 867.03
    cyclopentyl methyl ether 2662.92
    gamma-butyrolactone 2834.19
    1-methoxy-2-propanol 784.72
    pyridine 1844.42
    3-pentanone 1257.63
    furfural 1596.17
    n-dodecane 239.95
    diethylene glycol 453.27
    diisopropyl ether 959.63
    tert-amyl alcohol 735.94
    acetylacetone 1511.39
    n-hexadecane 288.83
    acetophenone 696.04
    methyl propionate 1033.59
    isopentyl acetate 1758.39
    trichloroethylene 2948.75
    n-nonanol 520.32
    cyclohexanol 1223.52
    benzyl alcohol 461.2
    2-ethylhexanol 1069.69
    isooctanol 529.98
    dipropyl ether 2568.78
    1,2-dichlorobenzene 1302.25
    ethyl lactate 356.85
    propylene carbonate 1758.99
    n-methylformamide 415.86
    2-pentanol 728.17
    n-pentane 792.56
    1-propoxy-2-propanol 1295.82
    1-methoxy-2-propyl acetate 1407.22
    2-(2-methoxypropoxy) propanol 550.08
    mesitylene 770.44
    ε-caprolactone 1891.56
    p-cymene 739.5
    epichlorohydrin 2465.14
    1,1,1-trichloroethane 2688.72
    2-aminoethanol 177.02
    morpholine-4-carbaldehyde 1301.55
    sulfolane 2839.75
    2,2,4-trimethylpentane 368.13
    2-methyltetrahydrofuran 3157.14
    n-hexyl acetate 1243.34
    isooctane 377.54
    2-(2-butoxyethoxy)ethanol 734.15
    sec-butyl acetate 815.65
    tert-butyl acetate 1493.31
    decalin 604.16
    glycerin 211.95
    diglyme 1505.64
    acrylic acid 413.31
    isopropyl myristate 711.57
    n-butyric acid 1087.11
    acetyl acetate 981.86
    di(2-ethylhexyl) phthalate 357.89
    ethyl propionate 875.34
    nitromethane 744.66
    1,2-diethoxyethane 1312.97
    benzonitrile 880.2
    trioctyl phosphate 360.64
    1-bromopropane 2007.77
    gamma-valerolactone 2362.13
    n-decanol 406.68
    triethyl phosphate 562.85
    4-methyl-2-pentanol 532.07
    propionitrile 1050.75
    vinylene carbonate 1141.19
    1,1,2-trichlorotrifluoroethane 1097.63
    DMS 713.14
    cumene 498.82
    2-octanol 431.42
    2-hexanone 1052.14
    octyl acetate 712.1
    limonene 1317.39
    1,2-dimethoxyethane 1266.52
    ethyl orthosilicate 579.42
    tributyl phosphate 457.55
    diacetone alcohol 928.12
    N,N-dimethylaniline 593.01
    acrylonitrile 954.2
    aniline 946.82
    1,3-propanediol 329.92
    bromobenzene 1911.57
    dibromomethane 2476.99
    1,1,2,2-tetrachloroethane 2631.5
    2-methyl-cyclohexyl acetate 1005.94
    tetrabutyl urea 570.06
    diisobutyl methanol 808.31
    2-phenylethanol 658.52
    styrene 817.19
    dioctyl adipate 690.03
    dimethyl sulfate 654.31
    ethyl butyrate 1488.42
    methyl lactate 403.48
    butyl lactate 547.4
    diethyl carbonate 814.39
    propanediol butyl ether 444.4
    triethyl orthoformate 1059.58
    p-tert-butyltoluene 725.19
    methyl 4-tert-butylbenzoate 748.06
    morpholine 1984.62
    tert-butylamine 790.42
    n-dodecanol 346.19
    dimethoxymethane 1090.07
    ethylene carbonate 1161.06
    cyrene 490.07
    2-ethoxyethyl acetate 823.48
    2-ethylhexyl acetate 1528.41
    1,2,4-trichlorobenzene 1313.49
    4-methylpyridine 1707.6
    dibutyl ether 1556.13
    2,6-dimethyl-4-heptanol 808.31
    DEF 1268.77
    dimethyl isosorbide 1207.37
    tetrachloroethylene 1717.74
    eugenol 508.92
    triacetin 811.12
    span 80 612.11
    1,4-butanediol 138.61
    1,1-dichloroethane 2214.26
    2-methyl-1-pentanol 466.92
    methyl formate 392.5
    2-methyl-1-butanol 707.73
    n-decane 421.55
    butyronitrile 1150.3
    3,7-dimethyl-1-octanol 719.0
    1-chlorooctane 890.48
    1-chlorotetradecane 398.6
    n-nonane 477.93
    undecane 302.57
    tert-butylcyclohexane 520.61
    cyclooctane 838.41
    cyclopentanol 1302.65
    tetrahydropyran 3097.64
    tert-amyl methyl ether 1184.76
    2,5,8-trioxanonane 904.86
    1-hexene 1335.02
    2-isopropoxyethanol 431.63
    2,2,2-trifluoroethanol 165.86
    methyl butyrate 1118.09

    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 2.0%