Sodium Methyl Stearoyl Taurate

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  • Identifiers

    CAS number
    149-39-3

    Molecular formula
    C21H42NNaO4S

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

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Odorless 45.69%
    Fatty 32.76%
    Savory 31.18%
    Waxy 29.58%
    Meaty 27.72%
    Cooling 22.99%
    Oily 22.54%
    Fresh 21.75%
    Animal 20.73%
    Milky 20.15%

     

    Flavor
    Bland 34.37%
    Odorless 26.43%
    Mild 24.12%
    Bitter 23.68%
    Herbal 21.59%
    Faint 20.72%
    Slightly waxy 20.19%
    Cedarleaf 19.42%
    Bay oil 19.06%
    Delicate 19.04%

     

    Odor impact est.
    Low

  • Properties

    pKa est.
    5.96 (weak acid)

    Molecular weight
    427.6 g/mol

    Flash point

    • 227.03 ˚C est.

  • Synonyms

    • Sodium methyl stearoyl taurate
    • Ethanesulfonic acid, 2-[methyl(1-oxooctadecyl)amino]-, sodium salt
    • JFM219LJ55
    • Sodium 2-[methyl(1-oxooctadecyl)amino]ethanesulphonate
    • NIKKOL SMT
    • Ethanesulfonic acid, 2-[methyl(1-oxooctadecyl)amino]-, sodium salt (1:1)
    • Sodium N-methyl-N-stearoyl taurate
    • Sodium N-stearoyl-N-methyl taurate
    • EINECS 205-738-9
    • Sodium N-stearoyl methyl taurate
    • Ethanesulfonic acid, 2-(methyl(1-oxooctadecyl)amino)-, sodium salt
    • SODIUM STEAROYL METHYL TAURATE
    • Sodium 2-(methyl(1-oxooctadecyl)amino)ethanesulphonate
    • 2-(Methyl(1-oxooctadecyl)amino)ethanesulfonic acid, sodium salt
    • Ethanesulfonic acid, 2-(methyl(1-oxooctadecyl)amino)-, sodium salt (1:1)
    • RefChem:887690
    • SODIUM METHYL STEAROYL TAURATE [INCI]
    • 149-39-3
    • sodium;2-[methyl(octadecanoyl)amino]ethanesulfonate
    • N-Stearoyl-N-taurine Sodium Salt
    • UNII-JFM219LJ55
    • SCHEMBL841014
    • DTXSID6059736
    • UKSFMDODPANKJI-UHFFFAOYSA-M
    • AKOS024430546
    • N-methyl-N-stearoyltaurine sodium salt
    • DB-231815
    • NS00014074
    • NS00079473
    • Sodium 2-(N-methyloctadecanamido)ethane-1-sulfonate
    • Q27281487
    • Ethanesulfonic acid,2-[methyl(1-oxooctadecyl)amino]-,sodium salt(1:1)
    • 149-39-3

  • Applications

    Sodium Methyl Stearoyl Taurate (CAS 149-39-3) is used as a mild surfactant and emulsifier in cosmetics and personal care formulations, including shampoos, facial cleansers and body washes, where it provides cleansing and conditioning performance. It also serves in household and industrial cleaning products as a surfactant and foam/stability modifier to enhance cleaning efficacy. In industrial manufacturing, it acts as an emulsifier and wetting agent in polymer, paint and coating formulations, promoting dispersion, stability and uniform film formation. Additionally, it can function as a processing additive in polymer and plastics applications to aid emulsions and formulation stability.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 2.67
    methanol 5.3
    isopropanol 2.03
    water 0.08
    ethyl acetate 10.7
    n-propanol 3.34
    acetone 14.97
    n-butanol 2.77
    acetonitrile 6.39
    DMF 66.48
    toluene 8.16
    isobutanol 2.72
    1,4-dioxane 16.07
    methyl acetate 11.95
    THF 54.56
    2-butanone 17.66
    n-pentanol 3.37
    sec-butanol 3.43
    n-hexane 0.42
    ethylene glycol 0.89
    NMP 230.83
    cyclohexane 1.78
    DMSO 57.74
    n-butyl acetate 13.28
    n-octanol 4.92
    chloroform 76.24
    n-propyl acetate 16.55
    acetic acid 15.07
    dichloromethane 80.51
    cyclohexanone 73.05
    propylene glycol 2.14
    isopropyl acetate 10.77
    DMAc 149.03
    2-ethoxyethanol 13.55
    isopentanol 3.52
    n-heptane 0.46
    ethyl formate 10.67
    1,2-dichloroethane 39.15
    n-hexanol 2.78
    2-methoxyethanol 14.55
    isobutyl acetate 10.49
    tetrachloromethane 9.43
    n-pentyl acetate 25.06
    transcutol 88.18
    n-heptanol 4.33
    ethylbenzene 6.02
    MIBK 12.01
    2-propoxyethanol 13.13
    tert-butanol 4.11
    MTBE 5.58
    2-butoxyethanol 19.28
    propionic acid 11.05
    o-xylene 9.88
    formic acid 7.72
    diethyl ether 3.44
    m-xylene 6.79
    p-xylene 8.69
    chlorobenzene 19.25
    dimethyl carbonate 9.66
    n-octane 0.34
    formamide 17.01
    cyclopentanone 90.54
    2-pentanone 13.67
    anisole 16.19
    cyclopentyl methyl ether 21.9
    gamma-butyrolactone 94.78
    1-methoxy-2-propanol 14.34
    pyridine 34.42
    3-pentanone 16.28
    furfural 95.95
    n-dodecane 0.26
    diethylene glycol 8.28
    diisopropyl ether 1.92
    tert-amyl alcohol 6.18
    acetylacetone 32.32
    n-hexadecane 0.32
    acetophenone 35.32
    methyl propionate 14.23
    isopentyl acetate 14.33
    trichloroethylene 107.63
    n-nonanol 5.35
    cyclohexanol 8.4
    benzyl alcohol 12.94
    2-ethylhexanol 3.46
    isooctanol 4.67
    dipropyl ether 4.89
    1,2-dichlorobenzene 30.24
    ethyl lactate 13.3
    propylene carbonate 50.19
    n-methylformamide 20.2
    2-pentanol 2.16
    n-pentane 0.3
    1-propoxy-2-propanol 13.29
    1-methoxy-2-propyl acetate 21.5
    2-(2-methoxypropoxy) propanol 29.46
    mesitylene 4.91
    ε-caprolactone 66.89
    p-cymene 5.1
    epichlorohydrin 71.27
    1,1,1-trichloroethane 37.16
    2-aminoethanol 2.87
    morpholine-4-carbaldehyde 97.31
    sulfolane 220.76
    2,2,4-trimethylpentane 0.59
    2-methyltetrahydrofuran 28.51
    n-hexyl acetate 22.75
    isooctane 0.25
    2-(2-butoxyethoxy)ethanol 30.67
    sec-butyl acetate 11.75
    tert-butyl acetate 18.03
    decalin 1.36
    glycerin 6.02
    diglyme 71.84
    acrylic acid 12.46
    isopropyl myristate 7.36
    n-butyric acid 15.24
    acetyl acetate 13.25
    di(2-ethylhexyl) phthalate 12.72
    ethyl propionate 14.82
    nitromethane 44.09
    1,2-diethoxyethane 17.16
    benzonitrile 18.11
    trioctyl phosphate 6.69
    1-bromopropane 11.35
    gamma-valerolactone 135.53
    n-decanol 3.28
    triethyl phosphate 15.28
    4-methyl-2-pentanol 2.19
    propionitrile 6.18
    vinylene carbonate 46.11
    1,1,2-trichlorotrifluoroethane 79.67
    DMS 20.68
    cumene 4.96
    2-octanol 3.67
    2-hexanone 16.23
    octyl acetate 9.82
    limonene 7.61
    1,2-dimethoxyethane 32.39
    ethyl orthosilicate 13.8
    tributyl phosphate 9.86
    diacetone alcohol 24.39
    N,N-dimethylaniline 15.97
    acrylonitrile 10.67
    aniline 10.73
    1,3-propanediol 3.73
    bromobenzene 21.43
    dibromomethane 39.47
    1,1,2,2-tetrachloroethane 92.88
    2-methyl-cyclohexyl acetate 22.29
    tetrabutyl urea 18.89
    diisobutyl methanol 2.86
    2-phenylethanol 9.99
    styrene 7.67
    dioctyl adipate 19.36
    dimethyl sulfate 40.36
    ethyl butyrate 15.08
    methyl lactate 13.57
    butyl lactate 24.24
    diethyl carbonate 11.53
    propanediol butyl ether 19.83
    triethyl orthoformate 15.77
    p-tert-butyltoluene 4.82
    methyl 4-tert-butylbenzoate 39.76
    morpholine 25.49
    tert-butylamine 2.45
    n-dodecanol 2.17
    dimethoxymethane 17.63
    ethylene carbonate 31.64
    cyrene 48.9
    2-ethoxyethyl acetate 35.87
    2-ethylhexyl acetate 13.08
    1,2,4-trichlorobenzene 41.62
    4-methylpyridine 30.15
    dibutyl ether 6.79
    2,6-dimethyl-4-heptanol 2.86
    DEF 33.24
    dimethyl isosorbide 73.63
    tetrachloroethylene 54.95
    eugenol 34.98
    triacetin 48.45
    span 80 23.93
    1,4-butanediol 2.4
    1,1-dichloroethane 24.25
    2-methyl-1-pentanol 4.64
    methyl formate 13.93
    2-methyl-1-butanol 3.86
    n-decane 0.57
    butyronitrile 5.97
    3,7-dimethyl-1-octanol 5.18
    1-chlorooctane 4.13
    1-chlorotetradecane 1.34
    n-nonane 0.49
    undecane 0.36
    tert-butylcyclohexane 0.9
    cyclooctane 0.55
    cyclopentanol 11.14
    tetrahydropyran 17.28
    tert-amyl methyl ether 7.8
    2,5,8-trioxanonane 49.55
    1-hexene 1.8
    2-isopropoxyethanol 10.5
    2,2,2-trifluoroethanol 12.15
    methyl butyrate 24.47

    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