4-Hydroxycinnamaldehyde

Overview IFRA Botanical Request a quote

  • Identifiers

    CAS number
    2538-87-6

    Molecular formula
    C9H8O2

    SMILES
    C1=CC(=CC=C1/C=C/C=O)O

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Sweet 82.08%
    Spicy 79.07%
    Cinnamon 69.06%
    Vanilla 58.08%
    Balsamic 54.46%
    Almond 49.83%
    Phenolic 48.6%
    Cherry 46.82%
    Warm 46.11%
    Bitter 43.7%

     

    Flavor
    Sweet 75.42%
    Cinnamon 59.74%
    Cherry 45.97%
    Spicy 45.56%
    Balsam 44.47%
    Almond 42.62%
    Vanilla 39.07%
    Spice 38.86%
    Woody 36.82%
    Phenolic 32.9%

     

    Odor impact est.
    Medium

  • Properties

    XLogP3-AA
    1.8

    pKa est.
    9.29 (weak base)

    Molecular weight
    148.16 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    344°C

    Melting point expt.

    • 140 °C

    Flash point

    • 145.7 ˚C est.

  • Synonyms

    • 3-(4-hydroxyphenyl)acrylaldehyde
    • p-Coumaraldehyde
    • 2538-87-6
    • (E)-3-(4-Hydroxyphenyl)acrylaldehyde
    • 20711-53-9
    • p-Hydroxycinnamaldehyde
    • 4-hydroxycinnamaldehyde
    • 2-propenal, 3-(4-hydroxyphenyl)-, (2E)-
    • (E)-3-(4-hydroxyphenyl)prop-2-enal
    • 4-Hydroxycinnamyl aldehyde
    • trans-p-Hydroxycinnamaldehyde
    • COUMARALDEHYDE
    • trans-p-Coumaraldehyde
    • CHEBI:28353
    • (2E)-3-(4-hydroxyphenyl)acrylaldehyde
    • (2E)-3-(4-hydroxyphenyl)prop-2-enal
    • trans-4-hydroxycinnamaldehyde
    • DTXSID001314202
    • p-coumaryl aldehyde
    • 4-coumaraldehyde
    • MFCD00599378
    • (E)-3-(4-hydroxyphenyl)-2-propenal
    • (E)-4-coumaraldehyde
    • 4-hydroxy cinnamaldehyde
    • bmse000611
    • bmse010084
    • SPECTRUM231070
    • SCHEMBL196960
    • SCHEMBL197453
    • CHEMBL431836
    • MCC6940
    • DTXCID001744013
    • CCG-39470
    • AKOS006271961
    • FH30857
    • NCGC00095729-01
    • AS-50095
    • DB-131165
    • CS-0188261
    • C05608
    • O10873
    • 3-(4-Hydroxyphenyl)acrylaldehyde;p-Coumaraldehyde
    • Q27103652
    • InChI=1/C9H8O2/c10-7-1-2-8-3-5-9(11)6-4-8/h1-7,11H/b2-1
    • 663-291-9

  • Applications

    4-Hydroxycinnamaldehyde is primarily used as a chemical intermediate in fragrance and flavor chemistry, serving as a building block for related cinnamaldehyde derivatives that help shape aroma and taste profiles in perfumery and consumer products. It is commonly used as a starting material in cosmetics and personal-care formulations where it contributes as a scent component. In industrial manufacturing, it functions as a precursor for specialty polymers, coatings and inks with cinnamaldehyde motifs. In pharmaceutical and agrochemical R&D, the compound is employed as a synthetic intermediate for exploring bioactive derivatives. It may also be encountered in household cleaning and other consumer products as a fragrance additive, subject to formulation limits and local regulations.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 85.32
    methanol 99.38
    isopropanol 43.29
    water 0.52
    ethyl acetate 94.91
    n-propanol 52.27
    acetone 130.48
    n-butanol 36.99
    acetonitrile 55.36
    DMF 125.14
    toluene 14.45
    isobutanol 28.86
    1,4-dioxane 138.74
    methyl acetate 121.69
    THF 181.43
    2-butanone 103.61
    n-pentanol 38.92
    sec-butanol 36.4
    n-hexane 0.29
    ethylene glycol 43.07
    NMP 84.07
    cyclohexane 0.26
    DMSO 142.66
    n-butyl acetate 76.91
    n-octanol 30.4
    chloroform 14.37
    n-propyl acetate 72.69
    acetic acid 83.07
    dichloromethane 20.72
    cyclohexanone 59.57
    propylene glycol 46.46
    isopropyl acetate 61.13
    DMAc 144.37
    2-ethoxyethanol 128.57
    isopentanol 40.9
    n-heptane 1.74
    ethyl formate 49.49
    1,2-dichloroethane 24.11
    n-hexanol 48.08
    2-methoxyethanol 158.22
    isobutyl acetate 54.78
    tetrachloromethane 2.53
    n-pentyl acetate 41.74
    transcutol 498.01
    n-heptanol 29.78
    ethylbenzene 12.68
    MIBK 58.19
    2-propoxyethanol 127.67
    tert-butanol 83.05
    MTBE 59.03
    2-butoxyethanol 77.42
    propionic acid 65.61
    o-xylene 14.83
    formic acid 58.55
    diethyl ether 36.96
    m-xylene 17.5
    p-xylene 15.1
    chlorobenzene 15.93
    dimethyl carbonate 51.15
    n-octane 1.12
    formamide 119.33
    cyclopentanone 116.54
    2-pentanone 70.99
    anisole 62.46
    cyclopentyl methyl ether 49.94
    gamma-butyrolactone 174.73
    1-methoxy-2-propanol 113.28
    pyridine 54.07
    3-pentanone 40.61
    furfural 120.1
    n-dodecane 2.06
    diethylene glycol 124.27
    diisopropyl ether 16.62
    tert-amyl alcohol 57.96
    acetylacetone 109.61
    n-hexadecane 2.25
    acetophenone 58.89
    methyl propionate 72.6
    isopentyl acetate 72.78
    trichloroethylene 58.91
    n-nonanol 28.65
    cyclohexanol 20.58
    benzyl alcohol 48.34
    2-ethylhexanol 33.91
    isooctanol 27.17
    dipropyl ether 38.31
    1,2-dichlorobenzene 19.18
    ethyl lactate 45.46
    propylene carbonate 81.77
    n-methylformamide 84.45
    2-pentanol 28.3
    n-pentane 0.24
    1-propoxy-2-propanol 92.58
    1-methoxy-2-propyl acetate 110.28
    2-(2-methoxypropoxy) propanol 105.74
    mesitylene 12.51
    ε-caprolactone 76.61
    p-cymene 17.84
    epichlorohydrin 159.12
    1,1,1-trichloroethane 21.57
    2-aminoethanol 63.41
    morpholine-4-carbaldehyde 139.87
    sulfolane 146.24
    2,2,4-trimethylpentane 1.45
    2-methyltetrahydrofuran 91.75
    n-hexyl acetate 57.7
    isooctane 1.86
    2-(2-butoxyethoxy)ethanol 133.71
    sec-butyl acetate 55.72
    tert-butyl acetate 90.32
    decalin 1.79
    glycerin 83.54
    diglyme 231.75
    acrylic acid 60.8
    isopropyl myristate 30.43
    n-butyric acid 63.38
    acetyl acetate 58.67
    di(2-ethylhexyl) phthalate 30.09
    ethyl propionate 56.78
    nitromethane 179.1
    1,2-diethoxyethane 118.28
    benzonitrile 42.56
    trioctyl phosphate 23.13
    1-bromopropane 7.3
    gamma-valerolactone 153.01
    n-decanol 23.64
    triethyl phosphate 36.68
    4-methyl-2-pentanol 28.7
    propionitrile 44.52
    vinylene carbonate 64.18
    1,1,2-trichlorotrifluoroethane 100.79
    DMS 67.14
    cumene 13.57
    2-octanol 20.33
    2-hexanone 65.54
    octyl acetate 36.69
    limonene 20.42
    1,2-dimethoxyethane 153.62
    ethyl orthosilicate 34.6
    tributyl phosphate 28.34
    diacetone alcohol 124.54
    N,N-dimethylaniline 40.91
    acrylonitrile 60.24
    aniline 30.15
    1,3-propanediol 70.86
    bromobenzene 13.12
    dibromomethane 8.02
    1,1,2,2-tetrachloroethane 38.51
    2-methyl-cyclohexyl acetate 50.6
    tetrabutyl urea 41.15
    diisobutyl methanol 27.98
    2-phenylethanol 52.06
    styrene 14.11
    dioctyl adipate 48.29
    dimethyl sulfate 78.52
    ethyl butyrate 60.59
    methyl lactate 54.8
    butyl lactate 42.34
    diethyl carbonate 47.69
    propanediol butyl ether 76.06
    triethyl orthoformate 46.18
    p-tert-butyltoluene 17.91
    methyl 4-tert-butylbenzoate 66.45
    morpholine 135.69
    tert-butylamine 30.26
    n-dodecanol 19.39
    dimethoxymethane 111.7
    ethylene carbonate 50.76
    cyrene 81.83
    2-ethoxyethyl acetate 85.93
    2-ethylhexyl acetate 52.09
    1,2,4-trichlorobenzene 28.9
    4-methylpyridine 49.1
    dibutyl ether 37.2
    2,6-dimethyl-4-heptanol 27.98
    DEF 59.27
    dimethyl isosorbide 163.33
    tetrachloroethylene 19.43
    eugenol 70.65
    triacetin 86.04
    span 80 65.63
    1,4-butanediol 37.16
    1,1-dichloroethane 18.59
    2-methyl-1-pentanol 40.46
    methyl formate 74.96
    2-methyl-1-butanol 32.68
    n-decane 2.66
    butyronitrile 37.56
    3,7-dimethyl-1-octanol 33.3
    1-chlorooctane 13.59
    1-chlorotetradecane 7.44
    n-nonane 2.11
    undecane 2.33
    tert-butylcyclohexane 2.86
    cyclooctane 0.33
    cyclopentanol 29.38
    tetrahydropyran 53.33
    tert-amyl methyl ether 43.16
    2,5,8-trioxanonane 173.48
    1-hexene 3.63
    2-isopropoxyethanol 93.6
    2,2,2-trifluoroethanol 38.18
    methyl butyrate 67.88

    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
Cinnamon bark 8 8007-80-5 Cinnamomum zeylanicum Blume (C. verum L. Presl), fam. Lauraceae 1.8%