Tetrahydro-4H-pyran-4-ol

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  • Identifiers

    CAS number
    2081-44-9

    Molecular formula
    C5H10O2

    SMILES
    C1COCCC1O

    Safety labels

    Corrosive
    Corrosive

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Sweet 50.65%
    Fruity 50.01%
    Ethereal 47.65%
    Fermented 39.04%
    Alcoholic 38.31%
    Solvent 37.26%
    Oily 32.49%
    Green 31.62%
    Musty 29.66%
    Mint 27.28%

     

    Flavor
    Sweet 47.76%
    Caramel 38.9%
    Bitter 35.69%
    Oily 32.1%
    Warm 30.77%
    Cauliflower 26.86%
    Vegetable 26.66%
    Coconut 23.29%
    Alkaline 22.98%
    Fatty 22.96%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    -0.1

    pKa est.
    8.07 (weak base)

    Molecular weight
    102.13 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Moderately fast

    Boiling point est.
    182°C

    Flash point

    • 66.02 ˚C est.

  • Synonyms

    • Tetrahydro-2H-pyran-4-ol
    • 2081-44-9
    • oxan-4-ol
    • 2H-Pyran-4-ol, tetrahydro-
    • Tetrahydro-4H-pyran-4-ol
    • ZZ9W8N9YQV
    • DTXSID90174921
    • EINECS 218-210-8
    • RefChem:188629
    • DTXCID9097412
    • 218-210-8
    • LMYJGUNNJIDROI-UHFFFAOYSA-N
    • Tetrahydro-4-pyranol
    • tetrahydropyran-4-ol
    • 4-Hydroxytetrahydropyran
    • MFCD00006633
    • Tetrahydro-pyran-4-ol
    • 4-hydroxytetrahydro-4h-pyran
    • 4-Hydroxytetrahydropyan
    • tetrahydro-2H-4-pyranol
    • 4-tetrahydropyranol
    • Tetrahydropyran-4-ol; 4-Hydroxytetrahydro-2H-pyran; 4-Hydroxytetrahydropyran; Tetrahydro-2H-pyran-4-ol; Tetrahydro-2H-pyranol-4-ol; Tetrahydro-4-pyranol
    • tetrahydo-4-pyranol
    • tetrahydro-pyran-4ol
    • 4-hydroxy tetrahydropyran
    • 4-hydroxy-tetrahydropyran
    • tetrahydro-4H-4-pyranol
    • UNII-ZZ9W8N9YQV
    • 4-hydroxy-tetrahydropyrane
    • 4-hydroxy-tetrahydro-pyran
    • Tetrahydro-4H-pyrane-4-ol
    • Tetrahydro-2 h-pyran-4-ol
    • SCHEMBL40046
    • Tetrahydro-4-pyranol, 98%
    • SCHEMBL302385
    • Tetrahydro-2H-pyran-4-ol #
    • 4-hydroxy-tetrahydro-2H-pyran
    • orb3029870
    • SCHEMBL1564430
    • SCHEMBL1810674
    • SCHEMBL2858389
    • SCHEMBL3367613
    • SCHEMBL26699712
    • ALBB-016822
    • STR05888
    • 4-HYDROXYTETRAHYDRO-2H-PYRAN
    • BBL104257
    • GEO-03742
    • SBB055945
    • STL558360
    • 2H-3,4,5,6-tetrahydropyran-4-ol
    • Tetrahydropyran-4-ol;2H-Pyran-4-ol
    • AKOS005217306
    • AS-5529
    • CS-W004264
    • FH37696
    • PB11583
    • SB10338
    • Tetrahydropyran-4-ol ; 2H-Pyran-4-ol
    • SY002687
    • DB-007912
    • NS00026742
    • T2825
    • EN300-53372
    • 081T449
    • F049961
    • F0001-0743
    • Z1359429523
    • 4-Hydroxytetrahydropyran Tetrahydro-4-pyranol Tetrahydro-2H-pyran-4-ol Tetrahydro-4H-pyran-4-ol 2H-Pyran-4-ol, tetrahydro- oxan-4-ol ZINC00391950 4-Hydroxytetrahydropyran AC1L2MXQ AC1Q7AQA AC1Q7AQ9
    • 2081-44-9

  • Applications

    Tetrahydro-4H-pyran-4-ol (CAS 2081-44-9) is primarily used as an organic synthesis intermediate and building block in chemical manufacture. In the perfumery and flavor industries, it is considered a structural unit for fragrance and flavor compounds. In cosmetics and personal care, it often serves as an intermediate to prepare aroma-related derivatives or to formulate fragrance-containing products. In the polymers and plastics sector, it can be used as a precursor for polymeric derivatives and resins. In coatings, inks, and related materials, it is used as a reactive intermediate or formulation component in resin systems.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 548.82
    methanol 744.13
    isopropanol 346.9
    water 60.21
    ethyl acetate 146.4
    n-propanol 360.72
    acetone 236.28
    n-butanol 284.04
    acetonitrile 293.63
    DMF 392.66
    toluene 24.76
    isobutanol 194.18
    1,4-dioxane 254.67
    methyl acetate 161.41
    THF 379.72
    2-butanone 152.25
    n-pentanol 132.74
    sec-butanol 212.81
    n-hexane 8.03
    ethylene glycol 218.59
    NMP 248.32
    cyclohexane 14.25
    DMSO 456.47
    n-butyl acetate 60.61
    n-octanol 43.69
    chloroform 485.48
    n-propyl acetate 57.51
    acetic acid 737.77
    dichloromethane 321.77
    cyclohexanone 155.69
    propylene glycol 274.96
    isopropyl acetate 57.95
    DMAc 241.91
    2-ethoxyethanol 221.8
    isopentanol 154.16
    n-heptane 10.67
    ethyl formate 152.24
    1,2-dichloroethane 136.62
    n-hexanol 99.57
    2-methoxyethanol 510.07
    isobutyl acetate 29.69
    tetrachloromethane 75.21
    n-pentyl acetate 42.85
    transcutol 411.59
    n-heptanol 50.58
    ethylbenzene 10.37
    MIBK 48.12
    2-propoxyethanol 189.9
    tert-butanol 251.81
    MTBE 70.92
    2-butoxyethanol 113.01
    propionic acid 402.97
    o-xylene 22.15
    formic acid 445.61
    diethyl ether 105.48
    m-xylene 19.44
    p-xylene 17.51
    chlorobenzene 55.97
    dimethyl carbonate 39.7
    n-octane 3.78
    formamide 467.09
    cyclopentanone 240.93
    2-pentanone 108.32
    anisole 37.89
    cyclopentyl methyl ether 103.45
    gamma-butyrolactone 327.34
    1-methoxy-2-propanol 310.08
    pyridine 191.63
    3-pentanone 70.13
    furfural 275.42
    n-dodecane 3.08
    diethylene glycol 218.43
    diisopropyl ether 17.12
    tert-amyl alcohol 159.99
    acetylacetone 89.42
    n-hexadecane 3.22
    acetophenone 41.38
    methyl propionate 115.99
    isopentyl acetate 40.82
    trichloroethylene 278.21
    n-nonanol 37.65
    cyclohexanol 135.58
    benzyl alcohol 66.98
    2-ethylhexanol 45.82
    isooctanol 36.65
    dipropyl ether 47.9
    1,2-dichlorobenzene 46.89
    ethyl lactate 47.85
    propylene carbonate 143.18
    n-methylformamide 379.1
    2-pentanol 125.63
    n-pentane 11.76
    1-propoxy-2-propanol 121.63
    1-methoxy-2-propyl acetate 57.96
    2-(2-methoxypropoxy) propanol 83.21
    mesitylene 12.74
    ε-caprolactone 142.94
    p-cymene 13.54
    epichlorohydrin 254.28
    1,1,1-trichloroethane 131.3
    2-aminoethanol 380.33
    morpholine-4-carbaldehyde 248.39
    sulfolane 261.72
    2,2,4-trimethylpentane 5.64
    2-methyltetrahydrofuran 201.87
    n-hexyl acetate 51.8
    isooctane 3.75
    2-(2-butoxyethoxy)ethanol 128.23
    sec-butyl acetate 30.19
    tert-butyl acetate 46.42
    decalin 4.89
    glycerin 331.74
    diglyme 209.52
    acrylic acid 371.94
    isopropyl myristate 17.92
    n-butyric acid 392.53
    acetyl acetate 82.35
    di(2-ethylhexyl) phthalate 25.06
    ethyl propionate 49.98
    nitromethane 632.96
    1,2-diethoxyethane 81.08
    benzonitrile 78.95
    trioctyl phosphate 17.98
    1-bromopropane 80.11
    gamma-valerolactone 277.31
    n-decanol 26.36
    triethyl phosphate 24.17
    4-methyl-2-pentanol 48.7
    propionitrile 189.83
    vinylene carbonate 128.69
    1,1,2-trichlorotrifluoroethane 294.51
    DMS 36.39
    cumene 9.56
    2-octanol 26.5
    2-hexanone 51.77
    octyl acetate 26.63
    limonene 21.31
    1,2-dimethoxyethane 184.87
    ethyl orthosilicate 24.24
    tributyl phosphate 22.45
    diacetone alcohol 96.72
    N,N-dimethylaniline 28.19
    acrylonitrile 251.49
    aniline 106.38
    1,3-propanediol 392.82
    bromobenzene 41.78
    dibromomethane 196.8
    1,1,2,2-tetrachloroethane 221.76
    2-methyl-cyclohexyl acetate 31.19
    tetrabutyl urea 29.71
    diisobutyl methanol 24.41
    2-phenylethanol 55.41
    styrene 15.64
    dioctyl adipate 31.43
    dimethyl sulfate 65.95
    ethyl butyrate 47.6
    methyl lactate 99.16
    butyl lactate 47.57
    diethyl carbonate 31.08
    propanediol butyl ether 106.16
    triethyl orthoformate 35.04
    p-tert-butyltoluene 13.9
    methyl 4-tert-butylbenzoate 46.32
    morpholine 347.54
    tert-butylamine 136.57
    n-dodecanol 19.54
    dimethoxymethane 146.75
    ethylene carbonate 105.2
    cyrene 70.7
    2-ethoxyethyl acetate 60.34
    2-ethylhexyl acetate 31.12
    1,2,4-trichlorobenzene 59.54
    4-methylpyridine 121.58
    dibutyl ether 36.89
    2,6-dimethyl-4-heptanol 24.41
    DEF 144.3
    dimethyl isosorbide 89.99
    tetrachloroethylene 171.13
    eugenol 53.73
    triacetin 56.64
    span 80 80.64
    1,4-butanediol 129.36
    1,1-dichloroethane 168.11
    2-methyl-1-pentanol 76.78
    methyl formate 194.39
    2-methyl-1-butanol 145.77
    n-decane 5.12
    butyronitrile 185.7
    3,7-dimethyl-1-octanol 37.63
    1-chlorooctane 18.04
    1-chlorotetradecane 7.12
    n-nonane 4.96
    undecane 3.77
    tert-butylcyclohexane 4.84
    cyclooctane 4.99
    cyclopentanol 205.17
    tetrahydropyran 186.28
    tert-amyl methyl ether 52.31
    2,5,8-trioxanonane 146.72
    1-hexene 26.51
    2-isopropoxyethanol 110.24
    2,2,2-trifluoroethanol 279.32
    methyl butyrate 71.53

    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