Sodium N-Isostearoyl Methyltaurate

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  • Identifiers

    CAS number
    170150-64-8

    Molecular formula
    C21H42NNaO4S

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

    Safety labels

  • Odor profile

    Fragrance
    Odorless 47.3%
    Savory 31.12%
    Fatty 28.18%
    Cooling 27.27%
    Waxy 26.14%
    Meaty 25.28%
    Animal 21.61%
    Oily 20.75%
    Fresh 20.68%
    Woody 19.36%

     

    Flavor
    Bland 33.57%
    Bitter 26.29%
    Odorless 25.13%
    Mild 23.12%
    Herbal 22.77%
    Slightly waxy 19.54%
    Cedarleaf 19.49%
    Faint 18.92%
    Delicate 18.87%
    Oriental 18.62%

     

    Odor impact est.
    Low

  • Properties

    pKa est.
    6.28 (neutral)

    Molecular weight
    427.6 g/mol

    Flash point

    • 221.7 ˚C est.

  • Synonyms

    • Sodium N-isostearoyl methyltaurate
    • DTXSID301014366
    • 170150-64-8
    • RefChem:887723
    • DTXCID601436971
    • SCHEMBL29392874
    • Sodium 2-[methyl(16-methylheptadecanoyl)amino]ethane-1-sulfonate
    • 170150-64-8

  • Applications

    Typically used as a mild surfactant and emulsifier in cosmetic and personal-care formulations, Sodium N-Isostearoyl Methyltaurate (CAS 170150-64-8) is employed in cleansers, shampoos, and skincare products to improve foaming, stability, and emollience while reducing irritation. It can function as a conditioning/softening agent in hair-care products and as an auxiliary emulsifier or thickener in oil-in-water cosmetic systems. In household cleaning formulations, it provides surfactant performance for effective cleaning with a gentle feel. In industrial manufacturing, it may be used as a specialty surfactant or stabilizer in coatings, inks, and polymer formulations, aiding dispersion of oils and the formation of stable emulsions.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 3.57
    methanol 6.0
    isopropanol 2.4
    water 0.05
    ethyl acetate 10.96
    n-propanol 3.99
    acetone 16.02
    n-butanol 3.37
    acetonitrile 6.01
    DMF 60.51
    toluene 8.54
    isobutanol 3.22
    1,4-dioxane 15.75
    methyl acetate 11.88
    THF 58.76
    2-butanone 18.75
    n-pentanol 4.0
    sec-butanol 3.89
    n-hexane 0.29
    ethylene glycol 0.82
    NMP 206.85
    cyclohexane 1.13
    DMSO 50.54
    n-butyl acetate 13.8
    n-octanol 4.95
    chloroform 82.18
    n-propyl acetate 16.56
    acetic acid 16.22
    dichloromethane 80.07
    cyclohexanone 71.09
    propylene glycol 2.56
    isopropyl acetate 11.14
    DMAc 142.03
    2-ethoxyethanol 15.93
    isopentanol 4.36
    n-heptane 0.32
    ethyl formate 10.65
    1,2-dichloroethane 38.13
    n-hexanol 3.26
    2-methoxyethanol 17.07
    isobutyl acetate 11.47
    tetrachloromethane 8.12
    n-pentyl acetate 23.75
    transcutol 109.62
    n-heptanol 4.6
    ethylbenzene 5.85
    MIBK 13.82
    2-propoxyethanol 16.01
    tert-butanol 4.73
    MTBE 5.86
    2-butoxyethanol 21.17
    propionic acid 11.09
    o-xylene 9.34
    formic acid 7.43
    diethyl ether 3.28
    m-xylene 7.19
    p-xylene 8.29
    chlorobenzene 18.8
    dimethyl carbonate 8.64
    n-octane 0.23
    formamide 15.4
    cyclopentanone 90.66
    2-pentanone 14.8
    anisole 17.29
    cyclopentyl methyl ether 21.33
    gamma-butyrolactone 90.26
    1-methoxy-2-propanol 17.48
    pyridine 33.88
    3-pentanone 15.42
    furfural 91.25
    n-dodecane 0.19
    diethylene glycol 9.52
    diisopropyl ether 1.74
    tert-amyl alcohol 6.79
    acetylacetone 33.83
    n-hexadecane 0.23
    acetophenone 36.1
    methyl propionate 13.85
    isopentyl acetate 16.0
    trichloroethylene 110.85
    n-nonanol 5.37
    cyclohexanol 8.53
    benzyl alcohol 14.34
    2-ethylhexanol 3.73
    isooctanol 4.97
    dipropyl ether 4.39
    1,2-dichlorobenzene 28.13
    ethyl lactate 13.51
    propylene carbonate 48.94
    n-methylformamide 18.45
    2-pentanol 2.36
    n-pentane 0.22
    1-propoxy-2-propanol 15.11
    1-methoxy-2-propyl acetate 24.35
    2-(2-methoxypropoxy) propanol 33.5
    mesitylene 4.69
    ε-caprolactone 67.04
    p-cymene 4.88
    epichlorohydrin 74.52
    1,1,1-trichloroethane 36.17
    2-aminoethanol 3.08
    morpholine-4-carbaldehyde 93.56
    sulfolane 199.78
    2,2,4-trimethylpentane 0.49
    2-methyltetrahydrofuran 28.93
    n-hexyl acetate 22.57
    isooctane 0.23
    2-(2-butoxyethoxy)ethanol 36.23
    sec-butyl acetate 12.31
    tert-butyl acetate 19.6
    decalin 1.03
    glycerin 6.5
    diglyme 77.29
    acrylic acid 11.93
    isopropyl myristate 7.04
    n-butyric acid 16.59
    acetyl acetate 12.87
    di(2-ethylhexyl) phthalate 13.21
    ethyl propionate 13.9
    nitromethane 42.76
    1,2-diethoxyethane 17.84
    benzonitrile 18.0
    trioctyl phosphate 6.66
    1-bromopropane 11.0
    gamma-valerolactone 138.53
    n-decanol 3.2
    triethyl phosphate 14.07
    4-methyl-2-pentanol 2.56
    propionitrile 5.89
    vinylene carbonate 42.61
    1,1,2-trichlorotrifluoroethane 83.9
    DMS 19.78
    cumene 4.77
    2-octanol 3.61
    2-hexanone 17.22
    octyl acetate 9.46
    limonene 6.93
    1,2-dimethoxyethane 32.8
    ethyl orthosilicate 12.92
    tributyl phosphate 9.54
    diacetone alcohol 28.35
    N,N-dimethylaniline 15.95
    acrylonitrile 10.16
    aniline 11.64
    1,3-propanediol 4.44
    bromobenzene 20.64
    dibromomethane 38.57
    1,1,2,2-tetrachloroethane 93.46
    2-methyl-cyclohexyl acetate 23.21
    tetrabutyl urea 17.49
    diisobutyl methanol 2.95
    2-phenylethanol 11.73
    styrene 7.34
    dioctyl adipate 18.66
    dimethyl sulfate 35.04
    ethyl butyrate 15.06
    methyl lactate 14.09
    butyl lactate 25.21
    diethyl carbonate 11.01
    propanediol butyl ether 22.74
    triethyl orthoformate 15.12
    p-tert-butyltoluene 4.63
    methyl 4-tert-butylbenzoate 41.04
    morpholine 25.79
    tert-butylamine 2.51
    n-dodecanol 2.02
    dimethoxymethane 18.6
    ethylene carbonate 29.25
    cyrene 52.07
    2-ethoxyethyl acetate 36.43
    2-ethylhexyl acetate 14.14
    1,2,4-trichlorobenzene 40.74
    4-methylpyridine 31.46
    dibutyl ether 6.03
    2,6-dimethyl-4-heptanol 2.95
    DEF 31.24
    dimethyl isosorbide 80.21
    tetrachloroethylene 52.76
    eugenol 36.78
    triacetin 48.3
    span 80 26.53
    1,4-butanediol 2.66
    1,1-dichloroethane 24.57
    2-methyl-1-pentanol 5.5
    methyl formate 13.07
    2-methyl-1-butanol 4.62
    n-decane 0.42
    butyronitrile 6.16
    3,7-dimethyl-1-octanol 5.57
    1-chlorooctane 3.51
    1-chlorotetradecane 1.07
    n-nonane 0.35
    undecane 0.27
    tert-butylcyclohexane 0.73
    cyclooctane 0.36
    cyclopentanol 11.28
    tetrahydropyran 16.51
    tert-amyl methyl ether 7.71
    2,5,8-trioxanonane 53.41
    1-hexene 1.58
    2-isopropoxyethanol 12.16
    2,2,2-trifluoroethanol 11.27
    methyl butyrate 23.96

    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