Sodium Undecylenate

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  • Identifiers

    CAS number
    3398-33-2

    Molecular formula
    C11H19NaO2

    SMILES
    C=CCCCCCCCCC(=O)[O-].[Na+]

    Safety labels

    Acute Toxic
    Acute Toxic

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Fatty 78.17%
    Waxy 62.96%
    Citrus 43.65%
    Green 40.05%
    Dairy 38.53%
    Sweet 37.57%
    Oily 37.13%
    Fruity 34.78%
    Aldehydic 34.53%
    Milky 33.2%

     

    Flavor
    Waxy 43.69%
    Fruity 41.38%
    Fatty 40.45%
    Woody 32.75%
    Herbal 32.35%
    Sweet 30.2%
    Fat 28.86%
    Oily 27.76%
    Floral 26.52%
    Soapy 26.41%

     

    Odor impact est.
    Medium

  • Properties

    pKa est.
    4.4 (weak acid)

    Molecular weight
    206.26 g/mol

    Flash point

    • 120.03 ˚C est.

  • Synonyms

    • SODIUM UNDECYLENATE
    • 3398-33-2
    • Sodium undec-10-enoate
    • Undecylenic Acid Sodium Salt
    • UNII-V50TG7E11W
    • V50TG7E11W
    • 10-Undecenoic acid, sodium salt
    • EINECS 222-264-8
    • 10-Undecenoic, sodium salt
    • AI3-19721
    • DTXSID4037039
    • 10-Hendecenoic acid, sodium salt
    • SODIUM UNDECYLENATE [VANDF]
    • NSC 2836
    • NSC-2836
    • SODIUM UNDECYLENATE [WHO-DD]
    • Sodium undec10enoate
    • RefChem:184150
    • 10Undecenoic, sodium salt
    • DTXCID2017039
    • SODIUM UNDECYLENATE [INCI]
    • 682-768-2
    • sodium;undec-10-enoate
    • Sodium 10-undecenoate
    • MFCD00054419
    • SODIUM DERIVATIVE OF 10-UNDECENOATE
    • NSC2836
    • Undecylenate (sodium)
    • starbld0005771
    • SCHEMBL78501
    • C11H19NaO2
    • orb2944129
    • Sodium undecylenate, AldrichCPR
    • DKYPZNSPQXLRRQ-UHFFFAOYSA-M
    • HY-W127452
    • 10-Undecenoic acid, sodium salt (1:1)
    • SY292661
    • CS-0185683
    • NS00083608
    • F554996
    • Q18212200
    • 3398-33-2

  • Applications

    Sodium Undecylenate (CAS 3398-33-2) is used as an anionic surfactant and emulsifier in cosmetics and personal care products (shampoos, cleansers, body washes); it also appears in household cleaning formulations as a mild detergent. In industrial manufacturing, it acts as a surfactant and emulsifier in polymer systems, coatings, and inks, and can be used as a surface-treatment or emulsifying additive in formulations involving plastics and coatings. Depending on local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 768.12
    methanol 817.53
    isopropanol 624.98
    water 0.03
    ethyl acetate 517.77
    n-propanol 543.51
    acetone 933.23
    n-butanol 501.75
    acetonitrile 276.62
    DMF 941.08
    toluene 195.72
    isobutanol 411.53
    1,4-dioxane 657.0
    methyl acetate 314.3
    THF 1567.4
    2-butanone 587.16
    n-pentanol 440.18
    sec-butanol 474.5
    n-hexane 199.53
    ethylene glycol 83.96
    NMP 759.26
    cyclohexane 133.97
    DMSO 1769.75
    n-butyl acetate 526.37
    n-octanol 179.68
    chloroform 639.46
    n-propyl acetate 427.33
    acetic acid 322.27
    dichloromethane 672.53
    cyclohexanone 897.06
    propylene glycol 194.51
    isopropyl acetate 387.0
    DMAc 616.55
    2-ethoxyethanol 514.52
    isopentanol 478.08
    n-heptane 51.79
    ethyl formate 221.05
    1,2-dichloroethane 644.65
    n-hexanol 446.56
    2-methoxyethanol 777.61
    isobutyl acetate 280.27
    tetrachloromethane 102.19
    n-pentyl acetate 295.16
    transcutol 2257.86
    n-heptanol 166.11
    ethylbenzene 148.09
    MIBK 438.4
    2-propoxyethanol 644.41
    tert-butanol 772.93
    MTBE 588.93
    2-butoxyethanol 320.93
    propionic acid 311.77
    o-xylene 147.01
    formic acid 82.69
    diethyl ether 637.28
    m-xylene 178.91
    p-xylene 165.48
    chlorobenzene 269.77
    dimethyl carbonate 109.65
    n-octane 20.75
    formamide 148.5
    cyclopentanone 1042.0
    2-pentanone 664.83
    anisole 294.85
    cyclopentyl methyl ether 771.77
    gamma-butyrolactone 862.29
    1-methoxy-2-propanol 743.83
    pyridine 476.21
    3-pentanone 361.28
    furfural 594.41
    n-dodecane 13.94
    diethylene glycol 389.69
    diisopropyl ether 207.64
    tert-amyl alcohol 552.12
    acetylacetone 614.15
    n-hexadecane 16.46
    acetophenone 282.75
    methyl propionate 370.37
    isopentyl acetate 462.62
    trichloroethylene 876.3
    n-nonanol 160.01
    cyclohexanol 484.56
    benzyl alcohol 244.07
    2-ethylhexanol 269.06
    isooctanol 147.01
    dipropyl ether 337.95
    1,2-dichlorobenzene 268.84
    ethyl lactate 169.79
    propylene carbonate 406.46
    n-methylformamide 347.35
    2-pentanol 411.76
    n-pentane 88.28
    1-propoxy-2-propanol 538.66
    1-methoxy-2-propyl acetate 490.36
    2-(2-methoxypropoxy) propanol 377.67
    mesitylene 133.78
    ε-caprolactone 625.67
    p-cymene 90.58
    epichlorohydrin 945.23
    1,1,1-trichloroethane 461.59
    2-aminoethanol 265.59
    morpholine-4-carbaldehyde 646.2
    sulfolane 1167.99
    2,2,4-trimethylpentane 41.71
    2-methyltetrahydrofuran 1022.59
    n-hexyl acetate 412.6
    isooctane 40.39
    2-(2-butoxyethoxy)ethanol 570.16
    sec-butyl acetate 307.26
    tert-butyl acetate 489.99
    decalin 74.28
    glycerin 229.65
    diglyme 885.2
    acrylic acid 205.25
    isopropyl myristate 147.9
    n-butyric acid 546.0
    acetyl acetate 234.5
    di(2-ethylhexyl) phthalate 134.23
    ethyl propionate 334.01
    nitromethane 499.74
    1,2-diethoxyethane 644.06
    benzonitrile 274.72
    trioctyl phosphate 96.92
    1-bromopropane 485.67
    gamma-valerolactone 985.31
    n-decanol 114.75
    triethyl phosphate 133.18
    4-methyl-2-pentanol 241.73
    propionitrile 288.27
    vinylene carbonate 296.93
    1,1,2-trichlorotrifluoroethane 540.37
    DMS 244.89
    cumene 107.07
    2-octanol 130.83
    2-hexanone 526.21
    octyl acetate 177.62
    limonene 161.7
    1,2-dimethoxyethane 774.11
    ethyl orthosilicate 138.53
    tributyl phosphate 136.16
    diacetone alcohol 566.75
    N,N-dimethylaniline 206.77
    acrylonitrile 297.78
    aniline 260.28
    1,3-propanediol 384.79
    bromobenzene 290.88
    dibromomethane 532.79
    1,1,2,2-tetrachloroethane 805.13
    2-methyl-cyclohexyl acetate 267.39
    tetrabutyl urea 176.63
    diisobutyl methanol 162.45
    2-phenylethanol 265.26
    styrene 177.74
    dioctyl adipate 232.5
    dimethyl sulfate 218.85
    ethyl butyrate 316.48
    methyl lactate 203.26
    butyl lactate 253.15
    diethyl carbonate 181.35
    propanediol butyl ether 384.31
    triethyl orthoformate 223.28
    p-tert-butyltoluene 95.87
    methyl 4-tert-butylbenzoate 255.77
    morpholine 970.53
    tert-butylamine 482.74
    n-dodecanol 83.59
    dimethoxymethane 581.53
    ethylene carbonate 255.22
    cyrene 280.88
    2-ethoxyethyl acetate 381.91
    2-ethylhexyl acetate 350.33
    1,2,4-trichlorobenzene 307.69
    4-methylpyridine 505.46
    dibutyl ether 316.3
    2,6-dimethyl-4-heptanol 162.45
    DEF 561.37
    dimethyl isosorbide 593.92
    tetrachloroethylene 492.94
    eugenol 256.95
    triacetin 345.51
    span 80 341.18
    1,4-butanediol 158.79
    1,1-dichloroethane 561.9
    2-methyl-1-pentanol 377.86
    methyl formate 189.12
    2-methyl-1-butanol 408.08
    n-decane 27.16
    butyronitrile 397.81
    3,7-dimethyl-1-octanol 211.33
    1-chlorooctane 137.17
    1-chlorotetradecane 47.02
    n-nonane 28.22
    undecane 18.56
    tert-butylcyclohexane 69.35
    cyclooctane 43.74
    cyclopentanol 543.15
    tetrahydropyran 969.73
    tert-amyl methyl ether 424.48
    2,5,8-trioxanonane 620.0
    1-hexene 490.94
    2-isopropoxyethanol 411.69
    2,2,2-trifluoroethanol 75.98
    methyl butyrate 448.86

    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