Ethyl isostearate

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  • Identifiers

    CAS number
    158760-40-8

    Molecular formula
    C20H40O2

    SMILES
    CCOC(=O)CCCCCCCCCCCCCCC(C)C

    Safety labels

  • Odor profile

    Fragrance
    Waxy 77.66%
    Fatty 68.93%
    Oily 58.64%
    Creamy 32.57%
    Sweet 32.39%
    Odorless 29.7%
    Dairy 23.68%
    Fruity 22.99%
    Milky 22.3%
    Soapy 21.6%

     

    Flavor
    Waxy 61.47%
    Oily 50.45%
    Fatty 45.56%
    Mild 43.89%
    Soapy 35.81%
    Coconut 32.11%
    Fat 32.05%
    Bland 31.63%
    Faint 30.57%
    Creamy 29.53%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    8.6

    pKa est.
    7.45 (neutral)

    Molecular weight
    312.5 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    357°C

    Flash point

    • 158.02 ˚C est.

  • Synonyms

    • Ethyl isostearate
    • Kak-eis
    • Eis-v
    • 158760-40-8
    • Ethyl isostearate [INCI]
    • Isooctadecanoic acid, ethyl ester
    • UNII-31LS8R672V
    • 31LS8R672V
    • RefChem:138968
    • ethyl 16-methylheptadecanoate
    • RB-K
    • EIS
    • SCHEMBL27896610
    • DTXSID701021703
    • Q27256062
    • 158760-40-8

  • Applications

    Ethyl isostearate (CAS 158760-40-8) is a branched fatty ester commonly used in cosmetics and personal care as an emollient and skin-conditioning agent, providing lubrication and a soft, silky feel. It also serves as a solvent/carrier for fragrance ingredients in perfumery formulations, helping to dissolve and stabilize aroma compounds. In industrial contexts, it acts as a processing aid and plasticizer for polymers, coatings, and inks, improving flexibility and film formation. It can function as a diluent/solvent in household cleaning formulations, and may be evaluated as a compatible solvent or additive in specialty coatings and adhesives. Use is dependent on formulation goals and regulatory compliance.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 158.92
    methanol 127.27
    isopropanol 258.49
    water 0.02
    ethyl acetate 1181.34
    n-propanol 245.64
    acetone 681.96
    n-butanol 327.81
    acetonitrile 240.03
    DMF 729.15
    toluene 407.29
    isobutanol 285.76
    1,4-dioxane 957.68
    methyl acetate 576.13
    THF 2171.03
    2-butanone 927.63
    n-pentanol 225.22
    sec-butanol 346.98
    n-hexane 155.11
    ethylene glycol 6.4
    NMP 1505.22
    cyclohexane 687.36
    DMSO 724.17
    n-butyl acetate 1246.56
    n-octanol 247.69
    chloroform 2331.31
    n-propyl acetate 1256.81
    acetic acid 213.03
    dichloromethane 2322.4
    cyclohexanone 2634.18
    propylene glycol 30.35
    isopropyl acetate 1102.33
    DMAc 1217.27
    2-ethoxyethanol 396.13
    isopentanol 441.05
    n-heptane 139.61
    ethyl formate 402.32
    1,2-dichloroethane 1652.98
    n-hexanol 243.29
    2-methoxyethanol 411.91
    isobutyl acetate 849.05
    tetrachloromethane 568.62
    n-pentyl acetate 1370.41
    transcutol 2049.11
    n-heptanol 214.24
    ethylbenzene 309.06
    MIBK 1025.44
    2-propoxyethanol 470.92
    tert-butanol 494.07
    MTBE 998.59
    2-butoxyethanol 509.88
    propionic acid 257.68
    o-xylene 370.44
    formic acid 24.92
    diethyl ether 809.29
    m-xylene 332.54
    p-xylene 469.84
    chlorobenzene 717.55
    dimethyl carbonate 149.45
    n-octane 60.34
    formamide 58.54
    cyclopentanone 2101.17
    2-pentanone 1130.95
    anisole 589.69
    cyclopentyl methyl ether 1439.88
    gamma-butyrolactone 1749.73
    1-methoxy-2-propanol 533.1
    pyridine 1012.9
    3-pentanone 812.0
    furfural 1080.07
    n-dodecane 30.3
    diethylene glycol 136.44
    diisopropyl ether 421.82
    tert-amyl alcohol 556.65
    acetylacetone 1162.24
    n-hexadecane 39.64
    acetophenone 692.69
    methyl propionate 664.08
    isopentyl acetate 1218.93
    trichloroethylene 2514.26
    n-nonanol 252.58
    cyclohexanol 749.0
    benzyl alcohol 311.02
    2-ethylhexanol 327.41
    isooctanol 262.45
    dipropyl ether 835.4
    1,2-dichlorobenzene 866.13
    ethyl lactate 298.41
    propylene carbonate 1028.07
    n-methylformamide 221.2
    2-pentanol 330.0
    n-pentane 94.66
    1-propoxy-2-propanol 595.27
    1-methoxy-2-propyl acetate 985.66
    2-(2-methoxypropoxy) propanol 459.79
    mesitylene 276.82
    ε-caprolactone 2029.33
    p-cymene 258.38
    epichlorohydrin 1899.74
    1,1,1-trichloroethane 2080.37
    2-aminoethanol 40.87
    morpholine-4-carbaldehyde 1182.15
    sulfolane 2358.65
    2,2,4-trimethylpentane 92.91
    2-methyltetrahydrofuran 1930.17
    n-hexyl acetate 1284.09
    isooctane 58.24
    2-(2-butoxyethoxy)ethanol 639.81
    sec-butyl acetate 1041.53
    tert-butyl acetate 1420.68
    decalin 197.68
    glycerin 47.65
    diglyme 1522.75
    acrylic acid 137.46
    isopropyl myristate 418.4
    n-butyric acid 830.05
    acetyl acetate 620.45
    di(2-ethylhexyl) phthalate 264.85
    ethyl propionate 1030.64
    nitromethane 584.02
    1,2-diethoxyethane 1167.05
    benzonitrile 516.37
    trioctyl phosphate 206.0
    1-bromopropane 1115.16
    gamma-valerolactone 2439.01
    n-decanol 161.61
    triethyl phosphate 447.91
    4-methyl-2-pentanol 262.82
    propionitrile 347.62
    vinylene carbonate 704.23
    1,1,2-trichlorotrifluoroethane 954.49
    DMS 544.25
    cumene 228.16
    2-octanol 239.22
    2-hexanone 1018.31
    octyl acetate 481.74
    limonene 563.92
    1,2-dimethoxyethane 1336.0
    ethyl orthosilicate 461.26
    tributyl phosphate 298.29
    diacetone alcohol 923.85
    N,N-dimethylaniline 413.86
    acrylonitrile 298.74
    aniline 362.25
    1,3-propanediol 125.67
    bromobenzene 897.66
    dibromomethane 1591.25
    1,1,2,2-tetrachloroethane 2554.38
    2-methyl-cyclohexyl acetate 864.69
    tetrabutyl urea 446.9
    diisobutyl methanol 266.21
    2-phenylethanol 317.89
    styrene 368.23
    dioctyl adipate 604.86
    dimethyl sulfate 350.39
    ethyl butyrate 1200.59
    methyl lactate 192.62
    butyl lactate 640.6
    diethyl carbonate 552.49
    propanediol butyl ether 361.28
    triethyl orthoformate 844.78
    p-tert-butyltoluene 242.4
    methyl 4-tert-butylbenzoate 710.55
    morpholine 1367.58
    tert-butylamine 375.29
    n-dodecanol 112.53
    dimethoxymethane 517.9
    ethylene carbonate 743.32
    cyrene 462.45
    2-ethoxyethyl acetate 1169.34
    2-ethylhexyl acetate 1059.26
    1,2,4-trichlorobenzene 989.22
    4-methylpyridine 1111.14
    dibutyl ether 940.28
    2,6-dimethyl-4-heptanol 266.21
    DEF 1311.25
    dimethyl isosorbide 1095.34
    tetrachloroethylene 1567.02
    eugenol 477.22
    triacetin 1019.89
    span 80 494.13
    1,4-butanediol 51.33
    1,1-dichloroethane 1616.58
    2-methyl-1-pentanol 317.5
    methyl formate 151.98
    2-methyl-1-butanol 376.98
    n-decane 77.66
    butyronitrile 544.04
    3,7-dimethyl-1-octanol 325.04
    1-chlorooctane 390.53
    1-chlorotetradecane 113.34
    n-nonane 79.21
    undecane 44.74
    tert-butylcyclohexane 147.95
    cyclooctane 151.68
    cyclopentanol 642.45
    tetrahydropyran 1915.56
    tert-amyl methyl ether 858.75
    2,5,8-trioxanonane 822.79
    1-hexene 365.89
    2-isopropoxyethanol 411.06
    2,2,2-trifluoroethanol 93.69
    methyl butyrate 1435.01

    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