Sodium Stearyl Sulfate

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  • Identifiers

    CAS number
    1120-04-3

    Molecular formula
    C18H37NaO4S

    SMILES
    CCCCCCCCCCCCCCCCCCOS(=O)(=O)[O-].[Na+]

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Odorless 48.06%
    Waxy 42.66%
    Fatty 40.26%
    Oily 25.86%
    Savory 22.1%
    Fresh 19.82%
    Meaty 19.46%
    Citrus 18.31%
    Milky 16.97%
    Clean 15.97%

     

    Flavor
    Bland 31.11%
    Mild 27.01%
    Waxy 25.13%
    Faint 24.64%
    Odorless 23.71%
    Slightly waxy 21.55%
    Fatty 21.37%
    Delicate 20.28%
    Bay oil 19.79%
    Low 19.33%

     

    Odor impact est.
    Low

  • Properties

    pKa est.
    6.31 (neutral)

    Molecular weight
    372.5 g/mol

    Flash point

    • 193.67 ˚C est.

  • Synonyms

    • 1120-04-3
    • Sodium octadecyl sulfate
    • Sodium stearyl sulfate
    • OCTADECYL SULFATE SODIUM SALT
    • sodium;octadecyl sulfate
    • Sodium octadecyl sulphate
    • Octadecyl sodium sulfate
    • Sulfuric acid, monooctadecyl ester, sodium salt
    • Sodium monostearyl sulfate
    • Sodium monooctadecyl sulfate
    • EINECS 214-295-0
    • T4EWW0Y4EJ
    • DTXSID6047103
    • sodium stearyl sulphate
    • 65151-89-5
    • DTXCID4027103
    • EINECS 265-560-2
    • Sulfuric acid, monooctadecyl ester, sodium salt (1:1)
    • Octadecadienyl sulfate (1:1), sodium salt
    • Octadecadien-1-ol, hydrogen sulfate, sodium salt
    • Octadecadien-1-ol, 1-(hydrogen sulfate), sodium salt (1:1)
    • RefChem:887886
    • DTXSID401070751
    • SODIUM STEARYL SULFATE [INCI]
    • Sodium n-octadecyl sulfate
    • SODIUMN-OCTADECYLSULFATE
    • MFCD00007469
    • UNII-T4EWW0Y4EJ
    • Sodium octadecadienyl sulphate
    • Octadecyl sulfate, sodium salt
    • C18H37NaO4S
    • SCHEMBL49218
    • CHEMBL462322
    • orb1296830
    • Tox21_302384
    • AKOS028109530
    • HY-W276164
    • NCGC00255655-01
    • AS-59982
    • SY061647
    • CAS-1120-04-3
    • CS-0321321
    • NS00081376
    • D95730
    • F723732
    • Q27289656
    • 1120-04-3

  • Applications

    Sodium Stearyl Sulfate is an anionic surfactant used as an emulsifier, foaming agent and wetting/dispersing aid in a range of formulations. In cosmetics and personal care, it helps stabilize emulsions and enhance foam in shampoos, cleansers and bath products. In household and industrial cleaners, it aids soil dispersion and cleaning efficiency. In coatings and inks, it acts as a pigment dispersant and emulsion stabilizer, supporting pigment dispersion and formulation stability. In polymers and plastics processing, it serves as an emulsifier or dispersant in latex formulations and other industrial emulsions. It is typically used within formulation limits and regulatory requirements.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 5.19
    methanol 5.4
    isopropanol 5.02
    water 0.01
    ethyl acetate 25.98
    n-propanol 5.93
    acetone 31.18
    n-butanol 5.97
    acetonitrile 10.27
    DMF 91.59
    toluene 18.57
    isobutanol 5.02
    1,4-dioxane 36.82
    methyl acetate 22.07
    THF 136.6
    2-butanone 36.98
    n-pentanol 7.13
    sec-butanol 7.13
    n-hexane 1.65
    ethylene glycol 0.73
    NMP 285.27
    cyclohexane 6.55
    DMSO 88.41
    n-butyl acetate 39.26
    n-octanol 11.93
    chloroform 118.93
    n-propyl acetate 38.38
    acetic acid 13.28
    dichloromethane 123.07
    cyclohexanone 129.66
    propylene glycol 2.47
    isopropyl acetate 29.7
    DMAc 159.46
    2-ethoxyethanol 20.7
    isopentanol 7.56
    n-heptane 2.02
    ethyl formate 15.24
    1,2-dichloroethane 80.36
    n-hexanol 7.54
    2-methoxyethanol 21.83
    isobutyl acetate 24.93
    tetrachloromethane 14.16
    n-pentyl acetate 63.67
    transcutol 137.41
    n-heptanol 9.05
    ethylbenzene 13.76
    MIBK 31.18
    2-propoxyethanol 26.22
    tert-butanol 10.95
    MTBE 20.1
    2-butoxyethanol 30.86
    propionic acid 12.69
    o-xylene 19.08
    formic acid 3.38
    diethyl ether 12.97
    m-xylene 16.21
    p-xylene 20.28
    chlorobenzene 40.29
    dimethyl carbonate 12.89
    n-octane 1.49
    formamide 11.21
    cyclopentanone 176.05
    2-pentanone 34.13
    anisole 36.96
    cyclopentyl methyl ether 52.03
    gamma-butyrolactone 144.81
    1-methoxy-2-propanol 25.14
    pyridine 64.66
    3-pentanone 31.31
    furfural 125.86
    n-dodecane 1.11
    diethylene glycol 10.58
    diisopropyl ether 8.26
    tert-amyl alcohol 13.77
    acetylacetone 73.08
    n-hexadecane 1.41
    acetophenone 66.35
    methyl propionate 25.37
    isopentyl acetate 42.5
    trichloroethylene 188.13
    n-nonanol 13.18
    cyclohexanol 15.67
    benzyl alcohol 21.02
    2-ethylhexanol 9.38
    isooctanol 9.95
    dipropyl ether 16.99
    1,2-dichlorobenzene 64.22
    ethyl lactate 19.79
    propylene carbonate 80.32
    n-methylformamide 20.67
    2-pentanol 5.7
    n-pentane 1.14
    1-propoxy-2-propanol 29.2
    1-methoxy-2-propyl acetate 53.77
    2-(2-methoxypropoxy) propanol 51.59
    mesitylene 13.27
    ε-caprolactone 113.77
    p-cymene 14.04
    epichlorohydrin 140.79
    1,1,1-trichloroethane 77.73
    2-aminoethanol 2.96
    morpholine-4-carbaldehyde 138.14
    sulfolane 332.08
    2,2,4-trimethylpentane 1.93
    2-methyltetrahydrofuran 77.3
    n-hexyl acetate 62.28
    isooctane 1.13
    2-(2-butoxyethoxy)ethanol 57.94
    sec-butyl acetate 32.25
    tert-butyl acetate 53.04
    decalin 4.7
    glycerin 5.12
    diglyme 120.71
    acrylic acid 11.1
    isopropyl myristate 22.3
    n-butyric acid 23.79
    acetyl acetate 27.4
    di(2-ethylhexyl) phthalate 24.11
    ethyl propionate 32.89
    nitromethane 47.77
    1,2-diethoxyethane 48.85
    benzonitrile 34.38
    trioctyl phosphate 14.48
    1-bromopropane 31.8
    gamma-valerolactone 210.23
    n-decanol 8.78
    triethyl phosphate 28.44
    4-methyl-2-pentanol 5.55
    propionitrile 11.11
    vinylene carbonate 56.16
    1,1,2-trichlorotrifluoroethane 94.53
    DMS 42.95
    cumene 11.48
    2-octanol 9.84
    2-hexanone 39.72
    octyl acetate 27.19
    limonene 23.33
    1,2-dimethoxyethane 58.84
    ethyl orthosilicate 26.17
    tributyl phosphate 20.89
    diacetone alcohol 51.37
    N,N-dimethylaniline 33.91
    acrylonitrile 15.62
    aniline 18.73
    1,3-propanediol 5.33
    bromobenzene 51.84
    dibromomethane 74.43
    1,1,2,2-tetrachloroethane 167.8
    2-methyl-cyclohexyl acetate 51.85
    tetrabutyl urea 40.82
    diisobutyl methanol 8.91
    2-phenylethanol 21.16
    styrene 17.28
    dioctyl adipate 45.61
    dimethyl sulfate 50.34
    ethyl butyrate 39.03
    methyl lactate 17.58
    butyl lactate 44.07
    diethyl carbonate 24.71
    propanediol butyl ether 32.24
    triethyl orthoformate 33.8
    p-tert-butyltoluene 14.4
    methyl 4-tert-butylbenzoate 72.94
    morpholine 55.68
    tert-butylamine 7.07
    n-dodecanol 6.08
    dimethoxymethane 32.27
    ethylene carbonate 44.22
    cyrene 66.83
    2-ethoxyethyl acetate 74.86
    2-ethylhexyl acetate 38.6
    1,2,4-trichlorobenzene 82.18
    4-methylpyridine 61.33
    dibutyl ether 23.13
    2,6-dimethyl-4-heptanol 8.91
    DEF 60.58
    dimethyl isosorbide 141.44
    tetrachloroethylene 86.77
    eugenol 57.91
    triacetin 88.49
    span 80 47.09
    1,4-butanediol 2.91
    1,1-dichloroethane 54.34
    2-methyl-1-pentanol 9.1
    methyl formate 13.54
    2-methyl-1-butanol 7.1
    n-decane 2.25
    butyronitrile 13.19
    3,7-dimethyl-1-octanol 14.44
    1-chlorooctane 14.21
    1-chlorotetradecane 4.85
    n-nonane 1.98
    undecane 1.51
    tert-butylcyclohexane 3.43
    cyclooctane 2.18
    cyclopentanol 22.26
    tetrahydropyran 46.14
    tert-amyl methyl ether 23.22
    2,5,8-trioxanonane 86.71
    1-hexene 6.13
    2-isopropoxyethanol 19.17
    2,2,2-trifluoroethanol 8.35
    methyl butyrate 50.04

    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