Sodium Hydroxystearate

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  • Identifiers

    CAS number
    13329-67-4

    Molecular formula
    C18H35NaO3

    SMILES
    CCCCCCC(CCCCCCCCCCC(=O)[O-])O.[Na+]

    Safety labels

  • Odor profile

    Fragrance
    Fatty 50.59%
    Waxy 49.41%
    Oily 45.95%
    Citrus 32.93%
    Fresh 32.23%
    Odorless 31.82%
    Milky 28.45%
    Coconut 27.67%
    Fruity 27.02%
    Woody 26.99%

     

    Flavor
    Fatty 42.43%
    Waxy 38.05%
    Mild 33.71%
    Fat 30.77%
    Oily 29.91%
    Bland 27.66%
    Odorless 26.94%
    Woody 25.79%
    Herbal 24.34%
    Faint 24.01%

     

    Odor impact est.
    Low

  • Properties

    pKa est.
    4.6 (weak acid)

    Molecular weight
    322.5 g/mol

    Flash point

    • 180.9 ˚C est.

  • Synonyms

    • 13329-67-4
    • SODIUM HYDROXYSTEARATE
    • Octadecanoic acid, 12-hydroxy-, monosodium salt
    • 12-Hydroxystearic acid, sodium salt
    • Monosodium 12-hydroxystearate
    • UNII-41MQN4869V
    • Octadecanoic acid, 12-hydroxy-, sodium salt (1:1)
    • 41MQN4869V
    • EINECS 236-374-9
    • DTXSID30884592
    • RefChem:183935
    • DTXCID701024026
    • (+-)-SODIUM HYDROXYSTEARATE
    • SODIUM HYDROXYSTEARATE [INCI]
    • SODIUM HYDROXYSTEARATE, (+-)-
    • 236-374-9
    • Sodium 12-hydroxyoctadecanoate
    • sodium;12-hydroxyoctadecanoate
    • sodium 12-hydroxystearate
    • C18H35NaO3
    • SCHEMBL1674850
    • NTVDGBKMGBRCKB-UHFFFAOYSA-M
    • MFCD30534058
    • (+/-)-SODIUM HYDROXYSTEARATE
    • AKOS028113136
    • SODIUM HYDROXYSTEARATE, (+/-)-
    • AS-57713
    • DB-231799
    • NS00085584
    • Octadecanoic acid, 12-hydroxy-, sodium salt
    • D95648
    • Q27258448
    • 13329-67-4

  • Applications

    Sodium Hydroxystearate (CAS 13329-67-4) is mainly used as an anionic surfactant and thickener in cosmetic and personal care formulations, helping to stabilize emulsions, improve texture, and provide cleansing and foaming properties. It is also used as a surfactant and emulsifier in household cleaning products. In coatings and inks, it can act as a rheology modifier and dispersant to help control viscosity and stabilize pigment suspensions. In polymer and plastics processing, the salt can serve as a surfactant and processing aid in emulsion and dispersion systems, helping to stabilize dispersions and improve processability. In industrial manufacturing, it may be used as a specialty additive in various formulations. Subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 86.6
    methanol 91.22
    isopropanol 99.31
    water 0.01
    ethyl acetate 146.43
    n-propanol 81.95
    acetone 132.12
    n-butanol 89.43
    acetonitrile 35.11
    DMF 275.14
    toluene 49.39
    isobutanol 77.98
    1,4-dioxane 202.02
    methyl acetate 88.96
    THF 740.07
    2-butanone 147.76
    n-pentanol 78.69
    sec-butanol 82.33
    n-hexane 15.99
    ethylene glycol 6.13
    NMP 467.35
    cyclohexane 43.89
    DMSO 608.41
    n-butyl acetate 230.67
    n-octanol 69.41
    chloroform 269.36
    n-propyl acetate 217.75
    acetic acid 68.32
    dichloromethane 276.72
    cyclohexanone 462.45
    propylene glycol 25.3
    isopropyl acetate 173.58
    DMAc 374.96
    2-ethoxyethanol 178.77
    isopentanol 119.49
    n-heptane 12.88
    ethyl formate 75.02
    1,2-dichloroethane 255.56
    n-hexanol 84.1
    2-methoxyethanol 201.68
    isobutyl acetate 155.87
    tetrachloromethane 58.23
    n-pentyl acetate 263.85
    transcutol 1005.1
    n-heptanol 63.25
    ethylbenzene 49.22
    MIBK 201.74
    2-propoxyethanol 210.09
    tert-butanol 181.15
    MTBE 181.47
    2-butoxyethanol 183.42
    propionic acid 70.97
    o-xylene 53.54
    formic acid 16.95
    diethyl ether 110.83
    m-xylene 52.32
    p-xylene 66.83
    chlorobenzene 97.67
    dimethyl carbonate 36.6
    n-octane 6.77
    formamide 39.08
    cyclopentanone 494.92
    2-pentanone 193.3
    anisole 128.09
    cyclopentyl methyl ether 278.7
    gamma-butyrolactone 423.18
    1-methoxy-2-propanol 233.99
    pyridine 169.64
    3-pentanone 113.21
    furfural 320.52
    n-dodecane 4.86
    diethylene glycol 94.49
    diisopropyl ether 61.27
    tert-amyl alcohol 153.42
    acetylacetone 259.64
    n-hexadecane 5.98
    acetophenone 166.34
    methyl propionate 104.61
    isopentyl acetate 248.15
    trichloroethylene 406.75
    n-nonanol 69.44
    cyclohexanol 147.5
    benzyl alcohol 86.7
    2-ethylhexanol 81.05
    isooctanol 71.32
    dipropyl ether 127.8
    1,2-dichlorobenzene 134.82
    ethyl lactate 85.45
    propylene carbonate 239.56
    n-methylformamide 79.94
    2-pentanol 75.87
    n-pentane 8.82
    1-propoxy-2-propanol 215.44
    1-methoxy-2-propyl acetate 249.92
    2-(2-methoxypropoxy) propanol 197.57
    mesitylene 46.35
    ε-caprolactone 388.69
    p-cymene 44.36
    epichlorohydrin 472.22
    1,1,1-trichloroethane 237.46
    2-aminoethanol 32.26
    morpholine-4-carbaldehyde 362.5
    sulfolane 852.03
    2,2,4-trimethylpentane 12.88
    2-methyltetrahydrofuran 394.17
    n-hexyl acetate 260.34
    isooctane 9.34
    2-(2-butoxyethoxy)ethanol 287.14
    sec-butyl acetate 175.59
    tert-butyl acetate 281.51
    decalin 24.49
    glycerin 43.86
    diglyme 564.96
    acrylic acid 42.77
    isopropyl myristate 88.92
    n-butyric acid 183.41
    acetyl acetate 100.78
    di(2-ethylhexyl) phthalate 77.2
    ethyl propionate 160.57
    nitromethane 160.81
    1,2-diethoxyethane 297.01
    benzonitrile 101.51
    trioctyl phosphate 58.12
    1-bromopropane 134.96
    gamma-valerolactone 642.37
    n-decanol 45.66
    triethyl phosphate 101.84
    4-methyl-2-pentanol 68.89
    propionitrile 48.0
    vinylene carbonate 157.55
    1,1,2-trichlorotrifluoroethane 309.41
    DMS 126.42
    cumene 42.32
    2-octanol 58.53
    2-hexanone 199.16
    octyl acetate 108.05
    limonene 82.77
    1,2-dimethoxyethane 359.66
    ethyl orthosilicate 102.0
    tributyl phosphate 82.75
    diacetone alcohol 281.56
    N,N-dimethylaniline 98.94
    acrylonitrile 53.26
    aniline 66.02
    1,3-propanediol 73.25
    bromobenzene 112.93
    dibromomethane 186.15
    1,1,2,2-tetrachloroethane 423.07
    2-methyl-cyclohexyl acetate 190.9
    tetrabutyl urea 121.25
    diisobutyl methanol 62.98
    2-phenylethanol 93.66
    styrene 57.36
    dioctyl adipate 156.84
    dimethyl sulfate 120.85
    ethyl butyrate 193.43
    methyl lactate 74.87
    butyl lactate 180.75
    diethyl carbonate 101.11
    propanediol butyl ether 173.48
    triethyl orthoformate 159.25
    p-tert-butyltoluene 45.81
    methyl 4-tert-butylbenzoate 192.76
    morpholine 332.17
    tert-butylamine 103.59
    n-dodecanol 31.44
    dimethoxymethane 166.04
    ethylene carbonate 146.99
    cyrene 185.6
    2-ethoxyethyl acetate 284.87
    2-ethylhexyl acetate 192.39
    1,2,4-trichlorobenzene 163.98
    4-methylpyridine 175.53
    dibutyl ether 154.88
    2,6-dimethyl-4-heptanol 62.98
    DEF 232.38
    dimethyl isosorbide 421.3
    tetrachloroethylene 248.51
    eugenol 161.89
    triacetin 282.98
    span 80 184.24
    1,4-butanediol 27.92
    1,1-dichloroethane 181.83
    2-methyl-1-pentanol 95.12
    methyl formate 48.24
    2-methyl-1-butanol 92.57
    n-decane 11.39
    butyronitrile 77.81
    3,7-dimethyl-1-octanol 85.92
    1-chlorooctane 66.81
    1-chlorotetradecane 19.65
    n-nonane 10.38
    undecane 6.94
    tert-butylcyclohexane 20.35
    cyclooctane 11.79
    cyclopentanol 152.4
    tetrahydropyran 314.98
    tert-amyl methyl ether 155.09
    2,5,8-trioxanonane 357.64
    1-hexene 55.06
    2-isopropoxyethanol 159.37
    2,2,2-trifluoroethanol 29.83
    methyl butyrate 244.29

    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