3-Pentyltetrahydro-2h-pyran-2-one

Overview IFRA Request a quote

  • Identifiers

    CAS number
    32821-72-0

    Molecular formula
    C10H18O2

    SMILES
    CCCCCC1CCCOC1=O

    Safety labels

  • Odor profile

    Fragrance
    Fruity 73.01%
    Sweet 67.89%
    Coconut 67.71%
    Floral 65.42%
    Green 61.2%
    Lactonic 59.12%
    Jasmin 57.39%
    Fatty 57.09%
    Creamy 55.56%
    Peach 53.95%

     

    Flavor
    Coconut 63.49%
    Creamy 63.17%
    Fruity 62.13%
    Peach 61.75%
    Fatty 58.88%
    Waxy 58.3%
    Sweet 54.6%
    Oily 53.78%
    Fresh 44.05%
    Buttery 39.06%

     

    Odor impact est.
    Medium

  • Properties

    XLogP3-AA
    3.1

    pKa est.
    7.77 (neutral)

    Molecular weight
    170.25 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Slow

    Boiling point est.
    251°C

    Flash point

    • 97.93 ˚C est.

  • Synonyms

    • 3-pentyloxan-2-one
    • 3-pentyltetrahydro-2h-pyran-2-one
    • 32821-72-0
    • Tetrahydro-3-pentyl-2H-pyran-2-one
    • xi-Tetrahydro-3-pentyl-2H-pyran-2-one
    • 0QTI1F7974
    • EINECS 251-244-1
    • UNII-0QTI1F7974
    • SCHEMBL2945488
    • SCHEMBL7741508
    • DTXSID60954479
    • CHEBI:180235
    • GYSLAGLXKCQGLV-UHFFFAOYSA-N
    • AKOS006327494
    • 2H-Pyran-2-one, tetrahydro-3-pentyl-
    • .ALPHA.-PENTYL-.DELTA.-VALEROLACTONE
    • NS00056358
    • Q27237118
    • 32821-72-0

  • Applications

    3-Pentyltetrahydro-2h-pyran-2-one, CAS 32821-72-0, is a γ-lactone bearing a pentyl substituent at position 3 and is primarily used as a fragrance ingredient in perfumery; it may be used as a flavor ingredient in certain food-related applications; it is also utilized in cosmetics and personal care as a fragrance component, and can appear in household and cleaning products to impart aroma; in industrial manufacturing and plastics, it can serve as an intermediate or monomer for selected polymer systems; its use is subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 5619.04
    methanol 6548.32
    isopropanol 4351.11
    water 0.16
    ethyl acetate 7002.9
    n-propanol 4100.81
    acetone 10403.26
    n-butanol 3822.5
    acetonitrile 7230.51
    DMF 7083.31
    toluene 2662.34
    isobutanol 3051.15
    1,4-dioxane 5622.03
    methyl acetate 4522.48
    THF 6595.99
    2-butanone 6442.41
    n-pentanol 2362.47
    sec-butanol 3285.84
    n-hexane 408.74
    ethylene glycol 379.97
    NMP 4067.83
    cyclohexane 658.8
    DMSO 7797.05
    n-butyl acetate 5086.39
    n-octanol 784.0
    chloroform 11868.56
    n-propyl acetate 3844.35
    acetic acid 3846.22
    dichloromethane 11409.92
    cyclohexanone 7665.35
    propylene glycol 671.57
    isopropyl acetate 3828.86
    DMAc 3070.71
    2-ethoxyethanol 2389.26
    isopentanol 3408.61
    n-heptane 132.4
    ethyl formate 3619.9
    1,2-dichloroethane 7871.25
    n-hexanol 2233.64
    2-methoxyethanol 4615.07
    isobutyl acetate 1926.12
    tetrachloromethane 1304.71
    n-pentyl acetate 2248.06
    transcutol 11403.1
    n-heptanol 764.63
    ethylbenzene 1098.87
    MIBK 2639.17
    2-propoxyethanol 3090.11
    tert-butanol 4153.79
    MTBE 4607.91
    2-butoxyethanol 1588.69
    propionic acid 3120.29
    o-xylene 1201.55
    formic acid 863.98
    diethyl ether 5657.19
    m-xylene 1463.36
    p-xylene 1365.38
    chlorobenzene 4183.09
    dimethyl carbonate 1055.67
    n-octane 54.78
    formamide 1822.81
    cyclopentanone 7160.34
    2-pentanone 5852.74
    anisole 2128.05
    cyclopentyl methyl ether 3681.77
    gamma-butyrolactone 7366.16
    1-methoxy-2-propanol 3316.84
    pyridine 7666.99
    3-pentanone 3309.53
    furfural 5425.28
    n-dodecane 42.56
    diethylene glycol 1545.21
    diisopropyl ether 1225.55
    tert-amyl alcohol 3084.79
    acetylacetone 4736.56
    n-hexadecane 53.68
    acetophenone 1948.43
    methyl propionate 3785.17
    isopentyl acetate 3603.22
    trichloroethylene 13287.1
    n-nonanol 648.15
    cyclohexanol 3205.87
    benzyl alcohol 1740.09
    2-ethylhexanol 1257.38
    isooctanol 655.65
    dipropyl ether 1585.08
    1,2-dichlorobenzene 3110.34
    ethyl lactate 792.97
    propylene carbonate 3557.96
    n-methylformamide 4175.56
    2-pentanol 2577.01
    n-pentane 325.68
    1-propoxy-2-propanol 2486.47
    1-methoxy-2-propyl acetate 2815.98
    2-(2-methoxypropoxy) propanol 1351.89
    mesitylene 792.8
    ε-caprolactone 5893.4
    p-cymene 518.14
    epichlorohydrin 7818.22
    1,1,1-trichloroethane 6564.87
    2-aminoethanol 1179.07
    morpholine-4-carbaldehyde 4120.22
    sulfolane 6200.06
    2,2,4-trimethylpentane 156.04
    2-methyltetrahydrofuran 6107.35
    n-hexyl acetate 2539.04
    isooctane 137.82
    2-(2-butoxyethoxy)ethanol 2244.89
    sec-butyl acetate 2216.47
    tert-butyl acetate 2930.81
    decalin 259.02
    glycerin 779.06
    diglyme 4228.14
    acrylic acid 2290.33
    isopropyl myristate 718.99
    n-butyric acid 5619.36
    acetyl acetate 2874.4
    di(2-ethylhexyl) phthalate 596.41
    ethyl propionate 2762.38
    nitromethane 7379.97
    1,2-diethoxyethane 4220.45
    benzonitrile 3725.6
    trioctyl phosphate 428.74
    1-bromopropane 4651.68
    gamma-valerolactone 7218.64
    n-decanol 439.45
    triethyl phosphate 565.61
    4-methyl-2-pentanol 1160.38
    propionitrile 5088.46
    vinylene carbonate 3336.62
    1,1,2-trichlorotrifluoroethane 4000.84
    DMS 1635.46
    cumene 596.24
    2-octanol 596.02
    2-hexanone 3424.99
    octyl acetate 905.32
    limonene 815.8
    1,2-dimethoxyethane 4600.31
    ethyl orthosilicate 578.59
    tributyl phosphate 656.12
    diacetone alcohol 2431.43
    N,N-dimethylaniline 1045.71
    acrylonitrile 5791.06
    aniline 3186.74
    1,3-propanediol 2139.5
    bromobenzene 4606.21
    dibromomethane 7660.59
    1,1,2,2-tetrachloroethane 9231.45
    2-methyl-cyclohexyl acetate 1173.81
    tetrabutyl urea 760.92
    diisobutyl methanol 657.69
    2-phenylethanol 1621.48
    styrene 1806.78
    dioctyl adipate 967.1
    dimethyl sulfate 1422.3
    ethyl butyrate 2248.04
    methyl lactate 1076.15
    butyl lactate 1358.45
    diethyl carbonate 1239.26
    propanediol butyl ether 1485.92
    triethyl orthoformate 1134.9
    p-tert-butyltoluene 485.04
    methyl 4-tert-butylbenzoate 1109.14
    morpholine 7387.78
    tert-butylamine 2544.01
    n-dodecanol 309.18
    dimethoxymethane 3526.79
    ethylene carbonate 2909.93
    cyrene 886.53
    2-ethoxyethyl acetate 2795.02
    2-ethylhexyl acetate 2450.07
    1,2,4-trichlorobenzene 3316.96
    4-methylpyridine 7465.53
    dibutyl ether 1700.23
    2,6-dimethyl-4-heptanol 657.69
    DEF 5272.18
    dimethyl isosorbide 1974.58
    tetrachloroethylene 5569.98
    eugenol 1179.04
    triacetin 1670.34
    span 80 1219.73
    1,4-butanediol 733.37
    1,1-dichloroethane 8801.56
    2-methyl-1-pentanol 2098.48
    methyl formate 2617.78
    2-methyl-1-butanol 2839.02
    n-decane 84.05
    butyronitrile 5790.36
    3,7-dimethyl-1-octanol 962.36
    1-chlorooctane 633.08
    1-chlorotetradecane 195.63
    n-nonane 83.73
    undecane 57.39
    tert-butylcyclohexane 230.41
    cyclooctane 164.71
    cyclopentanol 3012.1
    tetrahydropyran 7238.58
    tert-amyl methyl ether 2416.59
    2,5,8-trioxanonane 2222.65
    1-hexene 1998.79
    2-isopropoxyethanol 1742.5
    2,2,2-trifluoroethanol 854.67
    methyl butyrate 4271.43

    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