2-Hydroxy-1-(4-hydroxy-3-methoxyphenyl)ethanone

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  • Identifiers

    CAS number
    18256-48-9

    Molecular formula
    C9H10O4

    SMILES
    COC1=C(C=CC(=C1)C(=O)CO)O

    Safety labels

  • Odor profile

    Fragrance
    Vanilla 79.46%
    Sweet 76.92%
    Creamy 58.55%
    Balsamic 51.36%
    Caramellic 45.8%
    Powdery 45.0%
    Milky 42.06%
    Phenolic 38.57%
    Spicy 36.68%
    Floral 34.74%

     

    Flavor
    Sweet 63.18%
    Vanilla 40.25%
    Creamy 38.52%
    Caramel 34.06%
    Powdery 31.65%
    Odorless 30.6%
    Bitter 29.85%
    Faint 28.11%
    Balsamic 26.22%
    Mild 25.74%

     

    Odor impact est.
    Medium

  • Properties

    XLogP3-AA
    -0.1

    pKa est.
    7.96 (neutral)

    Molecular weight
    182.17 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    369°C

    Flash point

    • 168.7 ˚C est.

  • Synonyms

    • 2-Hydroxy-1-(4-hydroxy-3-methoxyphenyl)ethanone
    • 18256-48-9
    • Acetophenone, 2,4'-dihydroxy-3'-methoxy-
    • DTXSID00171305
    • RefChem:1063321
    • DTXCID2093796
    • 2,4'-Dihydroxy-3'-methoxyacetophenone
    • alpha-Hydroxyacetovanillone
    • Ethanone, 2-hydroxy-1-(4-hydroxy-3-methoxyphenyl)-
    • alpha-Hydroxyacetoguaiacone
    • alpha,4-Dihydroxy-3-methoxyacetophenone
    • BRN 2259722
    • NSC526464
    • 4-08-00-02739 (Beilstein Handbook Reference)
    • 2-hydroxy-1-(4-hydroxy-3-methoxyphenyl)ethan-1-one
    • CHEMBL592620
    • SCHEMBL1491848
    • CHEBI:208387
    • QNMANLUEFQNQCX-UHFFFAOYSA-N
    • Phenol, 4-hydroxyacetyl-2-methoxy-
    • NSC 526464
    • NSC-526464
    • 2-Hydroxy-1-(4-hydroxy-3-methoxyphenyl)ethanone #
    • 18256-48-9

  • Applications

    2-Hydroxy-1-(4-hydroxy-3-methoxyphenyl)ethanone (CAS 18256-48-9) is a substituted hydroxyacetophenone that serves as an intermediate in fragrance chemistry and related syntheses. In perfumery and flavor work, it functions as a precursor or building block for complex aromatic notes. In cosmetics and personal care, it can act as a fragrance ingredient or synthesis intermediate. It also serves as a building block for pharmaceutical or industrial chemicals and may be evaluated for use in polymers or coatings as an antioxidant or stabilizer due to its phenolic functionality. Subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 93.94
    methanol 193.82
    isopropanol 46.19
    water 5.81
    ethyl acetate 33.5
    n-propanol 52.73
    acetone 120.05
    n-butanol 29.57
    acetonitrile 38.62
    DMF 495.84
    toluene 2.6
    isobutanol 22.74
    1,4-dioxane 113.22
    methyl acetate 61.58
    THF 187.37
    2-butanone 49.54
    n-pentanol 20.41
    sec-butanol 31.1
    n-hexane 0.32
    ethylene glycol 139.59
    NMP 313.21
    cyclohexane 1.22
    DMSO 1219.55
    n-butyl acetate 17.04
    n-octanol 14.45
    chloroform 6.78
    n-propyl acetate 25.33
    acetic acid 144.65
    dichloromethane 23.04
    cyclohexanone 58.99
    propylene glycol 58.68
    isopropyl acetate 15.39
    DMAc 297.6
    2-ethoxyethanol 150.38
    isopentanol 24.4
    n-heptane 1.28
    ethyl formate 41.84
    1,2-dichloroethane 25.74
    n-hexanol 17.38
    2-methoxyethanol 274.52
    isobutyl acetate 8.36
    tetrachloromethane 2.31
    n-pentyl acetate 13.36
    transcutol 215.16
    n-heptanol 13.52
    ethylbenzene 3.28
    MIBK 18.98
    2-propoxyethanol 65.04
    tert-butanol 82.08
    MTBE 25.45
    2-butoxyethanol 41.02
    propionic acid 59.53
    o-xylene 5.24
    formic acid 300.54
    diethyl ether 20.81
    m-xylene 3.67
    p-xylene 4.13
    chlorobenzene 5.06
    dimethyl carbonate 40.25
    n-octane 0.62
    formamide 639.48
    cyclopentanone 121.2
    2-pentanone 31.06
    anisole 26.56
    cyclopentyl methyl ether 34.99
    gamma-butyrolactone 194.9
    1-methoxy-2-propanol 121.59
    pyridine 36.75
    3-pentanone 22.0
    furfural 145.97
    n-dodecane 0.57
    diethylene glycol 109.24
    diisopropyl ether 4.69
    tert-amyl alcohol 54.32
    acetylacetone 60.99
    n-hexadecane 0.65
    acetophenone 34.1
    methyl propionate 46.91
    isopentyl acetate 14.75
    trichloroethylene 33.95
    n-nonanol 13.16
    cyclohexanol 23.31
    benzyl alcohol 29.96
    2-ethylhexanol 10.9
    isooctanol 10.91
    dipropyl ether 13.08
    1,2-dichlorobenzene 8.74
    ethyl lactate 30.75
    propylene carbonate 53.58
    n-methylformamide 272.8
    2-pentanol 15.82
    n-pentane 0.5
    1-propoxy-2-propanol 39.77
    1-methoxy-2-propyl acetate 32.55
    2-(2-methoxypropoxy) propanol 53.82
    mesitylene 3.54
    ε-caprolactone 58.01
    p-cymene 4.83
    epichlorohydrin 140.49
    1,1,1-trichloroethane 6.93
    2-aminoethanol 134.08
    morpholine-4-carbaldehyde 224.66
    sulfolane 317.48
    2,2,4-trimethylpentane 0.72
    2-methyltetrahydrofuran 67.14
    n-hexyl acetate 19.95
    isooctane 0.46
    2-(2-butoxyethoxy)ethanol 68.63
    sec-butyl acetate 11.62
    tert-butyl acetate 25.27
    decalin 0.83
    glycerin 153.62
    diglyme 152.0
    acrylic acid 78.67
    isopropyl myristate 8.5
    n-butyric acid 38.99
    acetyl acetate 21.8
    di(2-ethylhexyl) phthalate 12.5
    ethyl propionate 21.42
    nitromethane 375.83
    1,2-diethoxyethane 33.93
    benzonitrile 18.67
    trioctyl phosphate 9.96
    1-bromopropane 5.62
    gamma-valerolactone 166.2
    n-decanol 9.75
    triethyl phosphate 16.86
    4-methyl-2-pentanol 9.59
    propionitrile 22.43
    vinylene carbonate 47.33
    1,1,2-trichlorotrifluoroethane 125.77
    DMS 26.68
    cumene 3.43
    2-octanol 8.21
    2-hexanone 21.69
    octyl acetate 12.26
    limonene 7.57
    1,2-dimethoxyethane 167.06
    ethyl orthosilicate 13.81
    tributyl phosphate 10.55
    diacetone alcohol 68.19
    N,N-dimethylaniline 22.43
    acrylonitrile 45.68
    aniline 15.87
    1,3-propanediol 118.13
    bromobenzene 3.47
    dibromomethane 9.18
    1,1,2,2-tetrachloroethane 23.7
    2-methyl-cyclohexyl acetate 17.54
    tetrabutyl urea 18.31
    diisobutyl methanol 8.11
    2-phenylethanol 21.86
    styrene 4.06
    dioctyl adipate 18.67
    dimethyl sulfate 112.9
    ethyl butyrate 18.78
    methyl lactate 54.18
    butyl lactate 19.38
    diethyl carbonate 15.68
    propanediol butyl ether 45.0
    triethyl orthoformate 16.55
    p-tert-butyltoluene 4.92
    methyl 4-tert-butylbenzoate 35.23
    morpholine 149.58
    tert-butylamine 23.67
    n-dodecanol 7.02
    dimethoxymethane 167.32
    ethylene carbonate 35.54
    cyrene 68.76
    2-ethoxyethyl acetate 29.69
    2-ethylhexyl acetate 10.4
    1,2,4-trichlorobenzene 12.81
    4-methylpyridine 24.84
    dibutyl ether 10.21
    2,6-dimethyl-4-heptanol 8.11
    DEF 76.36
    dimethyl isosorbide 80.23
    tetrachloroethylene 18.92
    eugenol 35.83
    triacetin 37.92
    span 80 33.32
    1,4-butanediol 48.76
    1,1-dichloroethane 6.66
    2-methyl-1-pentanol 16.52
    methyl formate 190.6
    2-methyl-1-butanol 22.04
    n-decane 0.96
    butyronitrile 17.18
    3,7-dimethyl-1-octanol 12.08
    1-chlorooctane 4.41
    1-chlorotetradecane 1.83
    n-nonane 0.82
    undecane 0.73
    tert-butylcyclohexane 0.73
    cyclooctane 0.56
    cyclopentanol 38.08
    tetrahydropyran 39.3
    tert-amyl methyl ether 21.68
    2,5,8-trioxanonane 104.53
    1-hexene 1.55
    2-isopropoxyethanol 66.08
    2,2,2-trifluoroethanol 77.77
    methyl butyrate 32.74

    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