Hydroxycaprylic Acid

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  • Identifiers

    CAS number
    617-73-2

    Molecular formula
    C8H16O3

    SMILES
    CCCCCCC(C(=O)O)O

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Fruity 64.9%
    Fatty 55.34%
    Cheesy 44.98%
    Buttery 44.59%
    Dairy 43.37%
    Oily 42.17%
    Green 40.07%
    Milky 39.66%
    Lactonic 39.07%
    Creamy 38.81%

     

    Flavor
    Odorless 39.53%
    Fatty 39.36%
    Waxy 34.08%
    Cheese 32.49%
    Oily 31.51%
    Sour 30.53%
    Mild 25.54%
    Sweat 24.42%
    Acidic 23.65%
    Cultured dairy 22.84%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    2.0

    pKa est.
    6.49 (neutral)

    Molecular weight
    160.21 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    266°C

    Melting point expt.

    • 70 °C

    Flash point

    • 133.48 ˚C est.

    Solubility expt.

    • 927 mg/mL

  • Synonyms

    • 2-Hydroxyoctanoic acid
    • 617-73-2
    • 2-Hydroxycaprylic acid
    • hydroxycaprylic acid
    • Octanoic acid, 2-hydroxy-
    • alpha-Hydroxycaprylic acid
    • alpha-Hydroxyoctanoic acid
    • DL-2-Hydroxyoctanoic acid
    • DL-2-Hydroxycaprylic acid
    • .alpha.-Hydroxycaprylic acid
    • 0R6X0G0S8A
    • .alpha.-Hydroxy-n-caprylic acid
    • EINECS 210-524-3
    • NSC 189703
    • NSC-189703
    • alpha-Hydroxy-n-caprylic acid
    • CHEBI:86543
    • DTXSID80862300
    • alpha-HCA acid
    • RefChem:789453
    • DTXCID50811087
    • HYDROXYCAPRYLIC ACID [INCI]
    • (+-)-2-HYDROXYOCTANOIC ACID
    • (+-)-ALPHA-HYDROXYCAPRYLIC ACID
    • (+-)-.ALPHA.-HYDROXYCAPRYLIC ACID
    • 210-524-3
    • 2-Hydroxy-n-octanoic Acid
    • (+/-)-2-Hydroxyoctanoic acid
    • MFCD00014410
    • 2-hydroxy caprylic acid
    • 2-hydroxy-octanoic acid
    • (+/-)-2-Hydroxycaprylic acid
    • CHEMBL4447980
    • Octanoic acid, hydroxy-
    • 2-Hydroxycaprylate
    • Hydroxyoctanoate
    • alpha-Hydroxyoctanoate
    • 2-Hydroxy-n-caprylic Acid
    • UNII-0R6X0G0S8A
    • hydroxycaprylate
    • a-Hydroxycaprylate
    • a-Hydroxyoctanoate
    • hydroxyoctanoic acid
    • a-Hydroxy-n-caprylate
    • a-Hydroxycaprylic acid
    • a-Hydroxyoctanoic acid
    • DL-2-Hydroxycaprylate
    • DL-2-Hydroxyoctanoate
    • alpha-Hydroxy-n-caprylate
    • a-Hydroxy-n-caprylic acid
    • bmse000572
    • ()-2-Hydroxycaprylic acid
    • ()-2-Hydroxyoctanoic acid
    • SCHEMBL17548
    • racemic 2-hydroxyoctanoic acid
    • GTPL5796
    • orb1299783
    • orb3026057
    • SCHEMBL1008290
    • SCHEMBL4121491
    • SCHEMBL17272811
    • HOC
    • BDBM50511007
    • LMFA01050020
    • NSC189703
    • s5436
    • AKOS009157231
    • MSK70027-100W
    • CCG-266282
    • CS-W016160
    • EBC-616992
    • FH46249
    • HY-W015444
    • AS-57720
    • PD046191
    • SY049622
    • DB-053984
    • (+/-)-.ALPHA.-HYDROXYCAPRYLIC ACID
    • H0592
    • NS00013753
    • D81442
    • 617H732
    • F546542
    • 2-Hydroxyoctanoic acid Solution in Water, 100ug/mL
    • ( inverted exclamation markA)-2-Hydroxyoctanoic acid
    • Q27071901
    • 617-73-2

  • Applications

    Hydroxycaprylic Acid (CAS 617-73-2) is used primarily as an intermediate in organic synthesis to produce esters, polyesters, and specialty polymers; it also serves as a precursor for biodegradable polymers and as a plasticizer. Owing to its carboxyl and hydroxyl functionality, the compound can act as a building block for surfactants and emulsifiers suitable for cleaning formulations, cosmetics, and coatings. In cosmetics and personal care, it may be used as a conditioning or humectant-type ingredient within compliant formulations. In industrial contexts, it can function as a chelating agent or metal-binding aid in cleaners and processing formulations, with exact uses governed by local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 542.26
    methanol 1386.83
    isopropanol 262.38
    water 6.33
    ethyl acetate 377.72
    n-propanol 291.36
    acetone 297.47
    n-butanol 254.3
    acetonitrile 55.92
    DMF 588.68
    toluene 26.68
    isobutanol 242.98
    1,4-dioxane 162.57
    methyl acetate 131.89
    THF 451.73
    2-butanone 162.75
    n-pentanol 183.71
    sec-butanol 198.88
    n-hexane 16.02
    ethylene glycol 484.78
    NMP 957.01
    cyclohexane 14.99
    DMSO 2480.24
    n-butyl acetate 310.36
    n-octanol 89.25
    chloroform 51.19
    n-propyl acetate 166.95
    acetic acid 823.62
    dichloromethane 59.09
    cyclohexanone 420.29
    propylene glycol 429.44
    isopropyl acetate 274.77
    DMAc 513.97
    2-ethoxyethanol 511.29
    isopentanol 331.24
    n-heptane 11.35
    ethyl formate 163.39
    1,2-dichloroethane 102.04
    n-hexanol 320.11
    2-methoxyethanol 1078.51
    isobutyl acetate 106.72
    tetrachloromethane 25.39
    n-pentyl acetate 136.02
    transcutol 1330.32
    n-heptanol 132.79
    ethylbenzene 31.12
    MIBK 244.16
    2-propoxyethanol 655.23
    tert-butanol 665.39
    MTBE 193.61
    2-butoxyethanol 305.86
    propionic acid 451.06
    o-xylene 45.18
    formic acid 759.11
    diethyl ether 73.98
    m-xylene 52.65
    p-xylene 36.56
    chlorobenzene 49.5
    dimethyl carbonate 104.08
    n-octane 5.26
    formamide 906.21
    cyclopentanone 575.01
    2-pentanone 279.79
    anisole 82.81
    cyclopentyl methyl ether 309.35
    gamma-butyrolactone 782.39
    1-methoxy-2-propanol 777.87
    pyridine 104.91
    3-pentanone 129.87
    furfural 496.49
    n-dodecane 4.17
    diethylene glycol 671.61
    diisopropyl ether 69.58
    tert-amyl alcohol 513.99
    acetylacetone 474.01
    n-hexadecane 4.55
    acetophenone 134.17
    methyl propionate 254.44
    isopentyl acetate 303.11
    trichloroethylene 197.12
    n-nonanol 79.95
    cyclohexanol 259.41
    benzyl alcohol 135.02
    2-ethylhexanol 174.33
    isooctanol 122.88
    dipropyl ether 81.75
    1,2-dichlorobenzene 73.41
    ethyl lactate 148.43
    propylene carbonate 374.08
    n-methylformamide 512.95
    2-pentanol 204.35
    n-pentane 8.55
    1-propoxy-2-propanol 470.98
    1-methoxy-2-propyl acetate 383.15
    2-(2-methoxypropoxy) propanol 274.22
    mesitylene 48.84
    ε-caprolactone 435.92
    p-cymene 41.84
    epichlorohydrin 414.94
    1,1,1-trichloroethane 75.53
    2-aminoethanol 690.54
    morpholine-4-carbaldehyde 637.89
    sulfolane 1396.76
    2,2,4-trimethylpentane 15.44
    2-methyltetrahydrofuran 331.55
    n-hexyl acetate 180.06
    isooctane 15.69
    2-(2-butoxyethoxy)ethanol 436.63
    sec-butyl acetate 140.8
    tert-butyl acetate 380.06
    decalin 16.18
    glycerin 639.04
    diglyme 612.52
    acrylic acid 381.49
    isopropyl myristate 64.3
    n-butyric acid 677.33
    acetyl acetate 198.26
    di(2-ethylhexyl) phthalate 87.27
    ethyl propionate 154.64
    nitromethane 738.14
    1,2-diethoxyethane 193.69
    benzonitrile 93.08
    trioctyl phosphate 73.27
    1-bromopropane 32.95
    gamma-valerolactone 743.36
    n-decanol 62.93
    triethyl phosphate 78.13
    4-methyl-2-pentanol 175.29
    propionitrile 59.58
    vinylene carbonate 238.29
    1,1,2-trichlorotrifluoroethane 561.79
    DMS 150.65
    cumene 36.15
    2-octanol 74.91
    2-hexanone 145.58
    octyl acetate 88.81
    limonene 66.79
    1,2-dimethoxyethane 356.87
    ethyl orthosilicate 77.98
    tributyl phosphate 89.05
    diacetone alcohol 654.37
    N,N-dimethylaniline 89.99
    acrylonitrile 107.77
    aniline 87.97
    1,3-propanediol 741.07
    bromobenzene 40.07
    dibromomethane 42.92
    1,1,2,2-tetrachloroethane 209.38
    2-methyl-cyclohexyl acetate 156.51
    tetrabutyl urea 114.85
    diisobutyl methanol 119.93
    2-phenylethanol 166.58
    styrene 29.75
    dioctyl adipate 113.7
    dimethyl sulfate 264.84
    ethyl butyrate 170.03
    methyl lactate 282.89
    butyl lactate 204.77
    diethyl carbonate 88.79
    propanediol butyl ether 366.98
    triethyl orthoformate 108.54
    p-tert-butyltoluene 46.65
    methyl 4-tert-butylbenzoate 179.67
    morpholine 268.86
    tert-butylamine 280.95
    n-dodecanol 48.01
    dimethoxymethane 300.64
    ethylene carbonate 200.57
    cyrene 260.22
    2-ethoxyethyl acetate 219.42
    2-ethylhexyl acetate 193.63
    1,2,4-trichlorobenzene 95.03
    4-methylpyridine 118.87
    dibutyl ether 59.54
    2,6-dimethyl-4-heptanol 119.93
    DEF 404.31
    dimethyl isosorbide 445.07
    tetrachloroethylene 190.91
    eugenol 185.11
    triacetin 185.92
    span 80 263.97
    1,4-butanediol 290.92
    1,1-dichloroethane 52.6
    2-methyl-1-pentanol 236.75
    methyl formate 286.25
    2-methyl-1-butanol 261.86
    n-decane 5.98
    butyronitrile 72.62
    3,7-dimethyl-1-octanol 136.82
    1-chlorooctane 30.33
    1-chlorotetradecane 13.31
    n-nonane 5.71
    undecane 4.87
    tert-butylcyclohexane 18.19
    cyclooctane 8.94
    cyclopentanol 329.51
    tetrahydropyran 116.54
    tert-amyl methyl ether 194.91
    2,5,8-trioxanonane 429.71
    1-hexene 36.67
    2-isopropoxyethanol 342.95
    2,2,2-trifluoroethanol 237.24
    methyl butyrate 222.21

    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