Sodium Isostearoyl Lactylate

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  • Identifiers

    CAS number
    66988-04-3

    Molecular formula
    C24H43NaO6

    SMILES
    CC(C)CCCCCCCCCCCCCCC(=O)OC(C)C(=O)OC(C)C(=O)[O-].[Na+]

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Fatty 53.86%
    Waxy 47.0%
    Odorless 41.28%
    Buttery 32.07%
    Milky 30.53%
    Oily 30.3%
    Creamy 29.58%
    Lactonic 26.69%
    Peach 23.42%
    Dairy 23.12%

     

    Flavor
    Bland 36.95%
    Mild 34.24%
    Waxy 33.11%
    Oily 32.07%
    Odorless 30.62%
    Fatty 25.05%
    Fruity 24.92%
    Faint 22.42%
    Slightly waxy 21.79%
    Beer 21.3%

     

    Odor impact est.
    Low

  • Properties

    pKa est.
    5.82 (weak acid)

    Molecular weight
    450.6 g/mol

    Flash point

    • 194.41 ˚C est.

  • Synonyms

    • Sodium isostearoyl-2-lactylate
    • 66988-04-3
    • Sodium isostearoyl lactylate
    • EINECS 266-533-8
    • PATIONIC ISL
    • 8730J0D3EV
    • PRIAZUL 2133
    • Isooctadecanoic acid, 2-(1-carboxyethoxy)-1-methyl-2-oxoethyl ester, sodium salt
    • Sodium 2-(1-carboxylatoethoxy)-1-methyl-2-oxoethyl isooctadecanoate
    • ISOSTEAROYL-2-LACTYLATE SODIUM
    • Isooctadecanoic acid, 2-(1-carboxyethoxy)-1-methyl-2-oxoethyl ester, sodium salt (1:1)
    • RefChem:887633
    • DTXCID3022405
    • DTXSID5042405
    • SODIUM ISOSTEAROYL LACTYLATE [INCI]
    • SODIUM 2-[[2-[(16-METHYLHEPTADECANOYL)OXY]PROPIONYL]OXY]PROPIONATE
    • sodium;2-[2-(16-methylheptadecanoyloxy)propanoyloxy]propanoate
    • Sodium 2-((2-((16-methylheptadecanoyl)oxy)propionyl)oxy)propionate
    • 94109-51-0
    • UNII-8730J0D3EV
    • EINECS 302-493-0
    • SCHEMBL2927590
    • FOSNFLMXYRQNAF-UHFFFAOYSA-M
    • NS00019621
    • NS00091821
    • Q27269786
    • 66988-04-3

  • Applications

    Sodium Isostearoyl Lactylate (CAS 66988-04-3) is primarily used as an emulsifier and surfactant in oil-in-water systems; in cosmetics and personal care it helps stabilize emulsions and can improve skin and hair feel; in food processing it is used as an emulsifier and texture modifier for bakery products and processed foods; in household and cleaning formulations it functions as a mild surfactant to aid cleaning and dispersion of soils; in industrial manufacturing it can be employed as an emulsifying/processing aid and stabilizer in polymer, coating, and ink systems to improve pigment dispersion and emulsion stability.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 37.77
    methanol 65.86
    isopropanol 31.97
    water 0.85
    ethyl acetate 121.67
    n-propanol 40.14
    acetone 143.89
    n-butanol 30.12
    acetonitrile 51.66
    DMF 262.21
    toluene 43.83
    isobutanol 33.59
    1,4-dioxane 136.65
    methyl acetate 112.31
    THF 331.93
    2-butanone 129.78
    n-pentanol 37.62
    sec-butanol 45.65
    n-hexane 5.84
    ethylene glycol 7.4
    NMP 562.04
    cyclohexane 14.72
    DMSO 372.1
    n-butyl acetate 75.2
    n-octanol 37.85
    chloroform 214.22
    n-propyl acetate 111.02
    acetic acid 126.31
    dichloromethane 268.2
    cyclohexanone 278.2
    propylene glycol 16.6
    isopropyl acetate 106.28
    DMAc 603.38
    2-ethoxyethanol 123.07
    isopentanol 34.5
    n-heptane 3.34
    ethyl formate 63.02
    1,2-dichloroethane 184.28
    n-hexanol 22.42
    2-methoxyethanol 119.97
    isobutyl acetate 63.81
    tetrachloromethane 52.95
    n-pentyl acetate 142.78
    transcutol 507.56
    n-heptanol 32.98
    ethylbenzene 34.53
    MIBK 82.22
    2-propoxyethanol 84.07
    tert-butanol 59.94
    MTBE 87.82
    2-butoxyethanol 117.66
    propionic acid 82.51
    o-xylene 48.3
    formic acid 49.96
    diethyl ether 56.32
    m-xylene 34.3
    p-xylene 49.96
    chlorobenzene 63.09
    dimethyl carbonate 65.52
    n-octane 3.5
    formamide 110.96
    cyclopentanone 319.14
    2-pentanone 99.28
    anisole 75.09
    cyclopentyl methyl ether 149.21
    gamma-butyrolactone 371.72
    1-methoxy-2-propanol 109.37
    pyridine 135.95
    3-pentanone 103.07
    furfural 242.85
    n-dodecane 2.31
    diethylene glycol 47.92
    diisopropyl ether 25.72
    tert-amyl alcohol 75.99
    acetylacetone 202.8
    n-hexadecane 2.68
    acetophenone 118.77
    methyl propionate 112.42
    isopentyl acetate 83.34
    trichloroethylene 338.12
    n-nonanol 36.63
    cyclohexanol 66.28
    benzyl alcohol 61.54
    2-ethylhexanol 21.1
    isooctanol 33.62
    dipropyl ether 33.59
    1,2-dichlorobenzene 81.87
    ethyl lactate 57.74
    propylene carbonate 178.82
    n-methylformamide 105.47
    2-pentanol 26.85
    n-pentane 3.68
    1-propoxy-2-propanol 73.56
    1-methoxy-2-propyl acetate 113.8
    2-(2-methoxypropoxy) propanol 111.68
    mesitylene 24.38
    ε-caprolactone 283.53
    p-cymene 20.27
    epichlorohydrin 333.24
    1,1,1-trichloroethane 189.58
    2-aminoethanol 24.03
    morpholine-4-carbaldehyde 322.04
    sulfolane 623.83
    2,2,4-trimethylpentane 6.44
    2-methyltetrahydrofuran 212.38
    n-hexyl acetate 144.86
    isooctane 2.68
    2-(2-butoxyethoxy)ethanol 157.69
    sec-butyl acetate 86.4
    tert-butyl acetate 145.94
    decalin 11.13
    glycerin 31.37
    diglyme 342.0
    acrylic acid 67.57
    isopropyl myristate 38.27
    n-butyric acid 103.13
    acetyl acetate 110.31
    di(2-ethylhexyl) phthalate 46.84
    ethyl propionate 100.42
    nitromethane 267.3
    1,2-diethoxyethane 146.44
    benzonitrile 59.46
    trioctyl phosphate 31.91
    1-bromopropane 71.53
    gamma-valerolactone 434.03
    n-decanol 22.56
    triethyl phosphate 50.0
    4-methyl-2-pentanol 21.69
    propionitrile 42.82
    vinylene carbonate 131.0
    1,1,2-trichlorotrifluoroethane 250.51
    DMS 112.72
    cumene 26.33
    2-octanol 31.58
    2-hexanone 98.13
    octyl acetate 56.08
    limonene 32.88
    1,2-dimethoxyethane 210.6
    ethyl orthosilicate 49.4
    tributyl phosphate 41.44
    diacetone alcohol 155.89
    N,N-dimethylaniline 65.75
    acrylonitrile 56.18
    aniline 50.0
    1,3-propanediol 36.42
    bromobenzene 68.54
    dibromomethane 142.9
    1,1,2,2-tetrachloroethane 322.9
    2-methyl-cyclohexyl acetate 76.24
    tetrabutyl urea 62.91
    diisobutyl methanol 16.32
    2-phenylethanol 44.4
    styrene 37.03
    dioctyl adipate 77.36
    dimethyl sulfate 164.61
    ethyl butyrate 72.07
    methyl lactate 67.28
    butyl lactate 106.87
    diethyl carbonate 47.6
    propanediol butyl ether 101.47
    triethyl orthoformate 60.64
    p-tert-butyltoluene 19.73
    methyl 4-tert-butylbenzoate 145.03
    morpholine 188.29
    tert-butylamine 32.6
    n-dodecanol 14.72
    dimethoxymethane 143.16
    ethylene carbonate 115.84
    cyrene 130.32
    2-ethoxyethyl acetate 209.18
    2-ethylhexyl acetate 65.8
    1,2,4-trichlorobenzene 120.2
    4-methylpyridine 126.37
    dibutyl ether 51.32
    2,6-dimethyl-4-heptanol 16.32
    DEF 177.01
    dimethyl isosorbide 224.75
    tetrachloroethylene 223.38
    eugenol 113.2
    triacetin 203.32
    span 80 94.23
    1,4-butanediol 23.42
    1,1-dichloroethane 136.37
    2-methyl-1-pentanol 44.61
    methyl formate 79.35
    2-methyl-1-butanol 40.01
    n-decane 5.39
    butyronitrile 41.28
    3,7-dimethyl-1-octanol 34.34
    1-chlorooctane 30.21
    1-chlorotetradecane 8.92
    n-nonane 5.0
    undecane 3.26
    tert-butylcyclohexane 8.16
    cyclooctane 4.83
    cyclopentanol 81.58
    tetrahydropyran 139.98
    tert-amyl methyl ether 94.38
    2,5,8-trioxanonane 202.53
    1-hexene 20.14
    2-isopropoxyethanol 95.3
    2,2,2-trifluoroethanol 81.75
    methyl butyrate 139.75

    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