Sodium Methyl Isethionate

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  • Identifiers

    CAS number
    869737-84-8

    Molecular formula
    C3H7NaO4S

    SMILES
    C[C@@H](CS(=O)(=O)[O-])O.[Na+]

    Safety labels

  • Odor profile

    Fragrance
    Odorless 76.91%
    Savory 23.37%
    Roasted 22.1%
    Sulfurous 20.9%
    Cooked 19.6%
    Meaty 18.19%
    Pungent 14.81%
    Onion 13.83%
    Fresh 13.71%
    Burnt 12.02%

     

    Flavor
    Bitter 59.3%
    Odorless 36.36%
    Bland 25.98%
    Mild 22.35%
    Nitrile 20.1%
    Roasted peanuts 19.59%
    Formyl 19.58%
    Taco 19.57%
    Bread crust 19.28%
    Mousy 19.24%

     

    Odor impact est.
    Low

  • Properties

    pKa est.
    4.47 (weak acid)

    Molecular weight
    162.14 g/mol

    Flash point

    • 134.17 ˚C est.

  • Synonyms

    • sodium methyl isethionate
    • IOW368554X
    • Propanesulfonic acid, 1(or 2)-hydroxy-, sodium salt (1:1)
    • 869737-84-8
    • SURFONIC SMI
    • RefChem:887687
    • TAURANOL SCMI 85
    • DTXSID00894724
    • SODIUM METHYL ISETHIONATE [INCI]
    • PROPANESULFONIC ACID, 1(OR 2)-HYDROXY-, MONOSODIUM SALT
    • UNII-IOW368554X
    • UNXCZDNUXJJWHY-DFWYDOINSA-M
    • 869737-84-8

  • Applications

    Sodium Methyl Isethionate (CAS 869737-84-8) is a mild anionic surfactant commonly used in cosmetics and personal care as a cleansing and foaming agent in shampoos, facial cleansers, body washes, and products for sensitive or baby skin; it is also used in household and industrial cleaners as a sulfate-free surfactant that provides foam stability and cleaning performance; in pharmaceutical formulations it can serve as an emulsifier and surfactant component in topical creams and gels; in coatings and inks, it functions as an emulsifier and surface-active additive to aid dispersion and surface leveling; and in polymer and plastic processing it is used as an emulsifier or processing aid to stabilize emulsions and improve handling.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 175.07
    methanol 331.23
    isopropanol 100.38
    water 145.1
    ethyl acetate 47.44
    n-propanol 98.32
    acetone 256.58
    n-butanol 84.03
    acetonitrile 126.71
    DMF 1137.42
    toluene 18.03
    isobutanol 53.03
    1,4-dioxane 68.09
    methyl acetate 65.37
    THF 233.46
    2-butanone 104.99
    n-pentanol 44.72
    sec-butanol 62.43
    n-hexane 2.75
    ethylene glycol 192.71
    NMP 714.18
    cyclohexane 3.77
    DMSO 772.21
    n-butyl acetate 26.86
    n-octanol 27.15
    chloroform 19.75
    n-propyl acetate 33.99
    acetic acid 233.47
    dichloromethane 30.57
    cyclohexanone 122.88
    propylene glycol 196.37
    isopropyl acetate 30.88
    DMAc 524.13
    2-ethoxyethanol 155.3
    isopentanol 49.7
    n-heptane 3.91
    ethyl formate 91.02
    1,2-dichloroethane 37.98
    n-hexanol 41.05
    2-methoxyethanol 429.41
    isobutyl acetate 16.75
    tetrachloromethane 3.65
    n-pentyl acetate 22.38
    transcutol 230.65
    n-heptanol 21.72
    ethylbenzene 10.77
    MIBK 56.41
    2-propoxyethanol 133.67
    tert-butanol 89.55
    MTBE 21.33
    2-butoxyethanol 60.24
    propionic acid 102.05
    o-xylene 20.98
    formic acid 293.04
    diethyl ether 27.3
    m-xylene 21.42
    p-xylene 11.77
    chlorobenzene 18.99
    dimethyl carbonate 70.15
    n-octane 1.61
    formamide 413.6
    cyclopentanone 204.94
    2-pentanone 104.7
    anisole 37.57
    cyclopentyl methyl ether 66.06
    gamma-butyrolactone 232.08
    1-methoxy-2-propanol 301.14
    pyridine 69.77
    3-pentanone 60.37
    furfural 290.0
    n-dodecane 1.77
    diethylene glycol 191.32
    diisopropyl ether 8.41
    tert-amyl alcohol 58.41
    acetylacetone 137.8
    n-hexadecane 1.88
    acetophenone 62.46
    methyl propionate 77.88
    isopentyl acetate 20.88
    trichloroethylene 53.75
    n-nonanol 25.15
    cyclohexanol 58.34
    benzyl alcohol 58.57
    2-ethylhexanol 19.23
    isooctanol 15.46
    dipropyl ether 21.92
    1,2-dichlorobenzene 21.1
    ethyl lactate 62.81
    propylene carbonate 105.32
    n-methylformamide 411.57
    2-pentanol 46.49
    n-pentane 4.27
    1-propoxy-2-propanol 82.63
    1-methoxy-2-propyl acetate 54.96
    2-(2-methoxypropoxy) propanol 92.16
    mesitylene 14.43
    ε-caprolactone 100.25
    p-cymene 10.9
    epichlorohydrin 144.87
    1,1,1-trichloroethane 16.72
    2-aminoethanol 201.55
    morpholine-4-carbaldehyde 428.91
    sulfolane 399.4
    2,2,4-trimethylpentane 1.89
    2-methyltetrahydrofuran 82.07
    n-hexyl acetate 36.23
    isooctane 1.73
    2-(2-butoxyethoxy)ethanol 117.3
    sec-butyl acetate 17.62
    tert-butyl acetate 37.68
    decalin 2.74
    glycerin 350.31
    diglyme 150.23
    acrylic acid 138.27
    isopropyl myristate 17.22
    n-butyric acid 102.33
    acetyl acetate 35.97
    di(2-ethylhexyl) phthalate 27.55
    ethyl propionate 38.61
    nitromethane 388.02
    1,2-diethoxyethane 31.5
    benzonitrile 49.07
    trioctyl phosphate 21.42
    1-bromopropane 14.98
    gamma-valerolactone 312.41
    n-decanol 20.28
    triethyl phosphate 20.33
    4-methyl-2-pentanol 25.73
    propionitrile 65.23
    vinylene carbonate 104.01
    1,1,2-trichlorotrifluoroethane 171.65
    DMS 34.92
    cumene 9.22
    2-octanol 15.14
    2-hexanone 47.0
    octyl acetate 25.45
    limonene 15.97
    1,2-dimethoxyethane 175.03
    ethyl orthosilicate 16.39
    tributyl phosphate 23.79
    diacetone alcohol 127.59
    N,N-dimethylaniline 43.42
    acrylonitrile 120.55
    aniline 48.3
    1,3-propanediol 193.97
    bromobenzene 12.04
    dibromomethane 18.69
    1,1,2,2-tetrachloroethane 44.92
    2-methyl-cyclohexyl acetate 27.25
    tetrabutyl urea 48.0
    diisobutyl methanol 13.52
    2-phenylethanol 48.06
    styrene 11.86
    dioctyl adipate 32.67
    dimethyl sulfate 154.22
    ethyl butyrate 30.22
    methyl lactate 145.88
    butyl lactate 42.35
    diethyl carbonate 19.86
    propanediol butyl ether 96.46
    triethyl orthoformate 20.76
    p-tert-butyltoluene 11.0
    methyl 4-tert-butylbenzoate 62.65
    morpholine 128.35
    tert-butylamine 38.66
    n-dodecanol 15.79
    dimethoxymethane 264.26
    ethylene carbonate 70.02
    cyrene 144.14
    2-ethoxyethyl acetate 33.07
    2-ethylhexyl acetate 15.27
    1,2,4-trichlorobenzene 28.34
    4-methylpyridine 82.07
    dibutyl ether 15.66
    2,6-dimethyl-4-heptanol 13.52
    DEF 154.49
    dimethyl isosorbide 138.87
    tetrachloroethylene 25.46
    eugenol 82.99
    triacetin 51.5
    span 80 81.63
    1,4-butanediol 74.31
    1,1-dichloroethane 22.26
    2-methyl-1-pentanol 29.18
    methyl formate 290.83
    2-methyl-1-butanol 48.06
    n-decane 2.44
    butyronitrile 64.86
    3,7-dimethyl-1-octanol 22.21
    1-chlorooctane 9.05
    1-chlorotetradecane 4.94
    n-nonane 2.23
    undecane 2.03
    tert-butylcyclohexane 2.37
    cyclooctane 2.06
    cyclopentanol 86.97
    tetrahydropyran 47.11
    tert-amyl methyl ether 26.12
    2,5,8-trioxanonane 146.82
    1-hexene 8.68
    2-isopropoxyethanol 73.15
    2,2,2-trifluoroethanol 120.08
    methyl butyrate 59.14

    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