2-Cyclopentylcyclopentanone

Overview IFRA Request a quote

  • Identifiers

    CAS number
    4884-24-6

    Molecular formula
    C10H16O

    SMILES
    C1CCC(C1)C2CCCC2=O

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Woody 76.9%
    Fruity 70.0%
    Green 63.99%
    Fresh 59.58%
    Herbal 52.47%
    Floral 49.97%
    Mint 48.76%
    Jasmin 45.15%
    Sweet 34.4%
    Natural 34.27%

     

    Flavor
    Animal 28.93%
    Minty 27.58%
    Bitter 22.98%
    Alkaline 22.55%
    Shrimp 22.42%
    Herbal 21.66%
    Soil 20.94%
    Beet 20.86%
    Cedarleaf 20.74%
    Spicy 20.62%

     

    Odor impact est.
    High

  • Properties

    XLogP3-AA
    2.6

    pKa est.
    8.41 (weak base)

    Molecular weight
    152.23 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Moderate

    Boiling point est.
    241°C

    Flash point

    • 83.11 ˚C est.

    Solubility expt.

    • Practically insoluble or insoluble in water
    • Soluble (in ethanol)

  • Synonyms

    • 2-Cyclopentylcyclopentanone
    • 4884-24-6
    • [1,1'-Bi(cyclopentan)]-2-one
    • [1,1'-Bicyclopentyl]-2-one
    • 2-cyclopentylcyclopentan-1-one
    • [Bicyclopentyl]-2-one
    • 2-cyclopentyl cyclopentanone
    • ITL55F9I8K
    • (1,1'-BICYCLOPENTYL)-2-ONE
    • Cyclopentanone, 2-cyclopentyl-
    • EINECS 225-495-2
    • 2-cyclopentyl-cyclopentanone
    • (BICYCLOPENTYL)-2-ONE
    • FEMA NO. 4514
    • DTXSID70863467
    • MFCD00051419
    • (1,1'-BICYCLOPENTAN)-2-ONE
    • [1,1'-Bicyclopentan]-2-one
    • UNII-ITL55F9I8K
    • (1.1'-bicyclopentyl)-2-one
    • [1,1'-Bicyclopentan]-2-one; [Bicyclopentyl]-2-one (8CI); 2-Cyclopentylcyclopentan-1-one
    • bicyclopentyl-2-one
    • BICYCLOPENTYLONE
    • SCHEMBL120444
    • DTXCID60812085
    • EAA88424
    • AKOS005207291
    • CS-W016297
    • BS-17367
    • SY050061
    • NS00012015
    • D83892
    • EN300-1246886
    • Q27280893
    • InChI=1/C10H16O/c11-10-7-3-6-9(10)8-4-1-2-5-8/h8-9H,1-7H
    • 225-495-2

  • Applications

    2-Cyclopentylcyclopentanone (CAS 4884-24-6) serves as an organic synthesis intermediate and a building block for cyclic ketone derivatives; in the fragrance industry, it is used as an odorant ingredient or fragrance precursor; in cosmetics and personal care, it may function as a fragrance component in skin and hair care products; in household and cleaning products, it can appear as a fragrance additive in detergents and cleaners; in pharmaceutical research and development, it is evaluated as an intermediate for the synthesis of more complex organic compounds; in industrial manufacturing, it provides a building block for synthetic routes to related ketone-containing materials; subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 2589.57
    methanol 3357.36
    isopropanol 2439.85
    water 4.91
    ethyl acetate 2240.49
    n-propanol 2158.61
    acetone 3618.5
    n-butanol 1843.59
    acetonitrile 3570.63
    DMF 3317.15
    toluene 1186.26
    isobutanol 1730.9
    1,4-dioxane 3170.39
    methyl acetate 2087.16
    THF 4434.1
    2-butanone 2427.88
    n-pentanol 1007.35
    sec-butanol 1458.82
    n-hexane 231.96
    ethylene glycol 585.61
    NMP 2035.24
    cyclohexane 365.75
    DMSO 2363.52
    n-butyl acetate 1432.91
    n-octanol 711.34
    chloroform 8455.37
    n-propyl acetate 1241.48
    acetic acid 1978.85
    dichloromethane 6319.28
    cyclohexanone 2986.16
    propylene glycol 805.3
    isopropyl acetate 1626.75
    DMAc 1640.17
    2-ethoxyethanol 1399.1
    isopentanol 1692.31
    n-heptane 146.49
    ethyl formate 1688.69
    1,2-dichloroethane 3262.36
    n-hexanol 1191.97
    2-methoxyethanol 2588.56
    isobutyl acetate 925.06
    tetrachloromethane 1148.32
    n-pentyl acetate 959.04
    transcutol 3974.39
    n-heptanol 656.18
    ethylbenzene 560.9
    MIBK 1406.75
    2-propoxyethanol 1852.57
    tert-butanol 2013.68
    MTBE 1844.71
    2-butoxyethanol 1227.91
    propionic acid 1782.98
    o-xylene 598.44
    formic acid 605.15
    diethyl ether 1760.89
    m-xylene 742.96
    p-xylene 705.75
    chlorobenzene 2111.83
    dimethyl carbonate 750.64
    n-octane 81.83
    formamide 847.85
    cyclopentanone 3459.27
    2-pentanone 2115.83
    anisole 1244.42
    cyclopentyl methyl ether 1903.24
    gamma-butyrolactone 3803.92
    1-methoxy-2-propanol 2113.67
    pyridine 3085.18
    3-pentanone 1334.96
    furfural 3028.55
    n-dodecane 73.43
    diethylene glycol 1306.54
    diisopropyl ether 634.9
    tert-amyl alcohol 1238.8
    acetylacetone 2251.29
    n-hexadecane 85.65
    acetophenone 1020.73
    methyl propionate 1528.75
    isopentyl acetate 1241.47
    trichloroethylene 6055.98
    n-nonanol 575.73
    cyclohexanol 1377.9
    benzyl alcohol 956.8
    2-ethylhexanol 603.13
    isooctanol 555.16
    dipropyl ether 804.06
    1,2-dichlorobenzene 1672.97
    ethyl lactate 580.9
    propylene carbonate 2156.23
    n-methylformamide 2146.5
    2-pentanol 1190.55
    n-pentane 239.94
    1-propoxy-2-propanol 1255.88
    1-methoxy-2-propyl acetate 1230.21
    2-(2-methoxypropoxy) propanol 797.61
    mesitylene 514.92
    ε-caprolactone 2348.33
    p-cymene 316.71
    epichlorohydrin 4167.53
    1,1,1-trichloroethane 3223.64
    2-aminoethanol 1136.81
    morpholine-4-carbaldehyde 2408.59
    sulfolane 3229.84
    2,2,4-trimethylpentane 116.05
    2-methyltetrahydrofuran 2777.01
    n-hexyl acetate 1370.28
    isooctane 128.54
    2-(2-butoxyethoxy)ethanol 1276.49
    sec-butyl acetate 898.12
    tert-butyl acetate 1419.21
    decalin 177.83
    glycerin 990.51
    diglyme 2384.32
    acrylic acid 1574.62
    isopropyl myristate 447.74
    n-butyric acid 2571.32
    acetyl acetate 1443.88
    di(2-ethylhexyl) phthalate 382.98
    ethyl propionate 1011.42
    nitromethane 3162.08
    1,2-diethoxyethane 1316.27
    benzonitrile 1893.36
    trioctyl phosphate 289.73
    1-bromopropane 2051.41
    gamma-valerolactone 3732.56
    n-decanol 396.27
    triethyl phosphate 337.27
    4-methyl-2-pentanol 729.97
    propionitrile 2776.76
    vinylene carbonate 2010.53
    1,1,2-trichlorotrifluoroethane 2279.06
    DMS 945.43
    cumene 382.94
    2-octanol 467.32
    2-hexanone 1276.04
    octyl acetate 566.43
    limonene 437.05
    1,2-dimethoxyethane 2293.68
    ethyl orthosilicate 331.62
    tributyl phosphate 356.58
    diacetone alcohol 1288.17
    N,N-dimethylaniline 653.5
    acrylonitrile 3459.71
    aniline 1529.59
    1,3-propanediol 1612.44
    bromobenzene 2290.8
    dibromomethane 4116.53
    1,1,2,2-tetrachloroethane 4581.07
    2-methyl-cyclohexyl acetate 587.03
    tetrabutyl urea 421.5
    diisobutyl methanol 398.63
    2-phenylethanol 882.44
    styrene 810.36
    dioctyl adipate 560.69
    dimethyl sulfate 917.51
    ethyl butyrate 917.81
    methyl lactate 865.58
    butyl lactate 715.8
    diethyl carbonate 582.16
    propanediol butyl ether 1131.51
    triethyl orthoformate 574.28
    p-tert-butyltoluene 304.08
    methyl 4-tert-butylbenzoate 847.2
    morpholine 3228.0
    tert-butylamine 1302.72
    n-dodecanol 288.32
    dimethoxymethane 1963.01
    ethylene carbonate 1779.92
    cyrene 624.17
    2-ethoxyethyl acetate 1146.48
    2-ethylhexyl acetate 821.05
    1,2,4-trichlorobenzene 1795.25
    4-methylpyridine 2865.76
    dibutyl ether 834.28
    2,6-dimethyl-4-heptanol 398.63
    DEF 1794.48
    dimethyl isosorbide 1157.7
    tetrachloroethylene 2986.36
    eugenol 799.2
    triacetin 989.16
    span 80 746.98
    1,4-butanediol 622.13
    1,1-dichloroethane 4255.76
    2-methyl-1-pentanol 861.71
    methyl formate 1660.94
    2-methyl-1-butanol 1342.19
    n-decane 126.48
    butyronitrile 2686.41
    3,7-dimethyl-1-octanol 644.7
    1-chlorooctane 519.13
    1-chlorotetradecane 190.28
    n-nonane 126.08
    undecane 93.02
    tert-butylcyclohexane 171.5
    cyclooctane 125.87
    cyclopentanol 1702.61
    tetrahydropyran 2857.46
    tert-amyl methyl ether 946.77
    2,5,8-trioxanonane 1235.0
    1-hexene 747.16
    2-isopropoxyethanol 1043.34
    2,2,2-trifluoroethanol 727.28
    methyl butyrate 1447.98

    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