Pentacosanoic acid

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  • Identifiers

    CAS number
    506-38-7

    Molecular formula
    C25H50O2

    SMILES
    CCCCCCCCCCCCCCCCCCCCCCCCC(=O)O

    Safety labels

  • Odor profile

    Fragrance
    Waxy 83.21%
    Fatty 67.3%
    Oily 40.27%
    Odorless 32.22%
    Creamy 20.46%
    Savory 18.27%
    Fishy 17.96%
    Meaty 17.7%
    Dairy 16.59%
    Sweet 15.73%

     

    Flavor
    Waxy 54.5%
    Fatty 50.15%
    Mild 39.39%
    Bland 33.98%
    Faint 31.95%
    Fat 31.67%
    Odorless 28.59%
    Alkane 26.71%
    Oily 26.64%
    Coconut 26.45%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    11.2

    pKa est.
    8.13 (weak base)

    Molecular weight
    382.7 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    478°C

    Flash point

    • 232.27 ˚C est.

  • Synonyms

    • PENTACOSANOIC ACID
    • 506-38-7
    • Hyenic acid
    • 4S768OX95G
    • NSC-89289
    • DTXSID8075049
    • CHEBI:39420
    • RefChem:1094456
    • DTXCID7040861
    • 208-036-0
    • n-Pentacosanoic acid
    • MFCD00020551
    • FA 25:0
    • C25:0
    • PENTACOSANOICACID
    • Hyenate
    • UNII-4S768OX95G
    • pentacosane acid
    • n-Pentacosanoate
    • pentacosanoic-acid
    • EINECS 208-036-0
    • NSC 89289
    • C24H49COOH
    • orb1299135
    • SCHEMBL2054087
    • SCHEMBL6345864
    • SCHEMBL9615685
    • CHEMBL4303190
    • NSC89289
    • LMFA01010025
    • AKOS015839858
    • EBC-616210
    • AS-35339
    • FP182481
    • SY053795
    • HY-124422
    • CS-0086444
    • NS00032105
    • P0882
    • 562AA15C-C8EA-4109-ABAF-D8CC68CCB7C8
    • Q4348644
    • BRD-K48996094-001-01-3
    • 506-38-7

  • Applications

    Pentacosanoic acid (CAS 506-38-7) is mainly a building block for long-chain ester and amide derivatives used in specialty lubricants, plasticizers, and polymer additives; it also serves as a feedstock for oleochemical-derived specialty waxes and other oleochemicals employed in cosmetics, personal care, and household products. It can also function as a precursor to polymeric surfactants and surface-modifying agents used in coatings, inks, and adhesives, and as a starting material for functionalized fatty acid derivatives in industrial formulations.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 1.48
    methanol 2.12
    isopropanol 1.57
    water 0.01
    ethyl acetate 10.63
    n-propanol 2.24
    acetone 6.49
    n-butanol 2.87
    acetonitrile 1.82
    DMF 19.35
    toluene 5.27
    isobutanol 2.46
    1,4-dioxane 15.87
    methyl acetate 7.56
    THF 74.05
    2-butanone 11.57
    n-pentanol 3.83
    sec-butanol 3.11
    n-hexane 2.81
    ethylene glycol 0.25
    NMP 100.95
    cyclohexane 10.33
    DMSO 34.01
    n-butyl acetate 26.15
    n-octanol 10.7
    chloroform 53.19
    n-propyl acetate 24.94
    acetic acid 5.15
    dichloromethane 48.25
    cyclohexanone 55.7
    propylene glycol 0.9
    isopropyl acetate 16.29
    DMAc 59.93
    2-ethoxyethanol 10.59
    isopentanol 4.93
    n-heptane 4.12
    ethyl formate 6.04
    1,2-dichloroethane 29.48
    n-hexanol 4.78
    2-methoxyethanol 8.15
    isobutyl acetate 20.5
    tetrachloromethane 15.71
    n-pentyl acetate 53.67
    transcutol 108.73
    n-heptanol 8.94
    ethylbenzene 7.74
    MIBK 18.9
    2-propoxyethanol 14.68
    tert-butanol 5.86
    MTBE 12.71
    2-butoxyethanol 26.35
    propionic acid 5.45
    o-xylene 8.02
    formic acid 1.38
    diethyl ether 5.91
    m-xylene 6.26
    p-xylene 11.05
    chlorobenzene 12.3
    dimethyl carbonate 5.23
    n-octane 2.68
    formamide 2.71
    cyclopentanone 64.12
    2-pentanone 12.86
    anisole 15.45
    cyclopentyl methyl ether 36.01
    gamma-butyrolactone 58.33
    1-methoxy-2-propanol 11.87
    pyridine 17.58
    3-pentanone 13.33
    furfural 41.38
    n-dodecane 1.49
    diethylene glycol 5.02
    diisopropyl ether 6.81
    tert-amyl alcohol 9.2
    acetylacetone 23.39
    n-hexadecane 1.8
    acetophenone 26.41
    methyl propionate 10.38
    isopentyl acetate 33.26
    trichloroethylene 59.07
    n-nonanol 12.34
    cyclohexanol 10.02
    benzyl alcohol 7.87
    2-ethylhexanol 9.03
    isooctanol 11.69
    dipropyl ether 21.49
    1,2-dichlorobenzene 23.08
    ethyl lactate 13.43
    propylene carbonate 39.27
    n-methylformamide 5.06
    2-pentanol 3.41
    n-pentane 1.3
    1-propoxy-2-propanol 22.11
    1-methoxy-2-propyl acetate 35.38
    2-(2-methoxypropoxy) propanol 39.17
    mesitylene 7.28
    ε-caprolactone 57.41
    p-cymene 10.62
    epichlorohydrin 50.96
    1,1,1-trichloroethane 41.05
    2-aminoethanol 1.11
    morpholine-4-carbaldehyde 48.18
    sulfolane 164.21
    2,2,4-trimethylpentane 3.09
    2-methyltetrahydrofuran 43.62
    n-hexyl acetate 49.49
    isooctane 1.94
    2-(2-butoxyethoxy)ethanol 43.63
    sec-butyl acetate 23.5
    tert-butyl acetate 38.18
    decalin 6.63
    glycerin 2.49
    diglyme 99.11
    acrylic acid 4.09
    isopropyl myristate 19.62
    n-butyric acid 12.75
    acetyl acetate 11.2
    di(2-ethylhexyl) phthalate 15.84
    ethyl propionate 22.01
    nitromethane 12.2
    1,2-diethoxyethane 40.59
    benzonitrile 9.93
    trioctyl phosphate 12.28
    1-bromopropane 16.03
    gamma-valerolactone 83.18
    n-decanol 7.67
    triethyl phosphate 29.81
    4-methyl-2-pentanol 4.86
    propionitrile 3.11
    vinylene carbonate 25.11
    1,1,2-trichlorotrifluoroethane 46.21
    DMS 22.24
    cumene 8.27
    2-octanol 9.82
    2-hexanone 21.97
    octyl acetate 21.2
    limonene 17.86
    1,2-dimethoxyethane 36.92
    ethyl orthosilicate 30.97
    tributyl phosphate 17.16
    diacetone alcohol 34.26
    N,N-dimethylaniline 17.47
    acrylonitrile 3.29
    aniline 5.6
    1,3-propanediol 2.37
    bromobenzene 16.3
    dibromomethane 31.15
    1,1,2,2-tetrachloroethane 72.34
    2-methyl-cyclohexyl acetate 44.88
    tetrabutyl urea 30.38
    diisobutyl methanol 10.44
    2-phenylethanol 9.67
    styrene 7.36
    dioctyl adipate 36.74
    dimethyl sulfate 21.0
    ethyl butyrate 35.39
    methyl lactate 7.88
    butyl lactate 37.37
    diethyl carbonate 19.83
    propanediol butyl ether 21.64
    triethyl orthoformate 41.06
    p-tert-butyltoluene 10.84
    methyl 4-tert-butylbenzoate 54.67
    morpholine 23.07
    tert-butylamine 4.81
    n-dodecanol 5.24
    dimethoxymethane 12.14
    ethylene carbonate 22.27
    cyrene 39.92
    2-ethoxyethyl acetate 50.26
    2-ethylhexyl acetate 30.93
    1,2,4-trichlorobenzene 29.61
    4-methylpyridine 16.55
    dibutyl ether 30.37
    2,6-dimethyl-4-heptanol 10.44
    DEF 23.3
    dimethyl isosorbide 103.55
    tetrachloroethylene 41.03
    eugenol 37.76
    triacetin 63.58
    span 80 34.92
    1,4-butanediol 1.39
    1,1-dichloroethane 20.16
    2-methyl-1-pentanol 6.57
    methyl formate 3.95
    2-methyl-1-butanol 4.49
    n-decane 3.58
    butyronitrile 4.26
    3,7-dimethyl-1-octanol 14.12
    1-chlorooctane 15.41
    1-chlorotetradecane 4.58
    n-nonane 3.37
    undecane 2.15
    tert-butylcyclohexane 5.42
    cyclooctane 3.6
    cyclopentanol 10.91
    tetrahydropyran 25.78
    tert-amyl methyl ether 17.75
    2,5,8-trioxanonane 64.17
    1-hexene 5.38
    2-isopropoxyethanol 11.24
    2,2,2-trifluoroethanol 4.14
    methyl butyrate 32.34

    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