poly(oxy-1,2-ethanediyl), alpha-(carboxymethyl)-omega-(hexadecyloxy)-, sodium salt

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  • Identifiers

    CAS number
    33939-65-0

    Molecular formula
    C20H39NaO4

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

    Safety labels

    Corrosive
    Corrosive

  • Odor profile

    Fragrance
    Waxy 57.28%
    Fatty 49.18%
    Oily 35.71%
    Odorless 33.15%
    Sweet 26.62%
    Fresh 22.9%
    Clean 21.11%
    Fruity 20.42%
    Alcoholic 20.4%
    Milky 20.24%

     

    Flavor
    Waxy 52.73%
    Fatty 48.17%
    Oily 37.16%
    Mild 34.33%
    Soapy 30.95%
    Fat 30.93%
    Coconut 29.15%
    Bland 27.85%
    Creamy 27.5%
    Mushroom 27.24%

     

    Odor impact est.
    Low

  • Properties

    pKa est.
    3.74 (weak acid)

    Molecular weight
    366.5 g/mol

    Flash point

    • 189.92 ˚C est.

  • Synonyms

    • 33939-65-0
    • RefChem:865328
    • DTXSID00955521
    • 608-923-6
    • sodium;2-(2-hexadecoxyethoxy)acetate
    • SCHEMBL21122149
    • DWPSYGLTBCBSMP-UHFFFAOYSA-M
    • 33939-65-0

  • Applications

    poly(oxy-1,2-ethanediyl), alpha-(carboxymethyl)-omega-(hexadecyloxy)-, sodium salt (CAS 33939-65-0) is an anionic surfactant with a C16 hydrophobic tail and a carboxylate end group. In real-world use, it acts as a wetting agent and emulsifier in household and industrial cleaners; as an emulsifier and stabilizer in cosmetics and personal care products; as a pigment dispersant and wetting agent in coatings, paints, and inks; as a surfactant and processing aid in polymer emulsions and plastics manufacturing; as a solubilizer or formulation aid for hydrophobic actives in pharmaceuticals or agrochemical formulations; and as an adjuvant to improve spreading and leaf wetting in agricultural formulations. Its use is subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 3.25
    methanol 6.26
    isopropanol 3.25
    water 0.04
    ethyl acetate 29.16
    n-propanol 4.64
    acetone 22.54
    n-butanol 5.34
    acetonitrile 9.24
    DMF 55.39
    toluene 15.16
    isobutanol 5.22
    1,4-dioxane 38.79
    methyl acetate 22.92
    THF 126.34
    2-butanone 27.93
    n-pentanol 7.14
    sec-butanol 5.79
    n-hexane 2.77
    ethylene glycol 1.2
    NMP 195.56
    cyclohexane 14.84
    DMSO 138.03
    n-butyl acetate 43.82
    n-octanol 14.42
    chloroform 130.47
    n-propyl acetate 50.39
    acetic acid 22.16
    dichloromethane 144.4
    cyclohexanone 132.36
    propylene glycol 2.66
    isopropyl acetate 33.34
    DMAc 117.57
    2-ethoxyethanol 27.32
    isopentanol 9.21
    n-heptane 4.29
    ethyl formate 17.97
    1,2-dichloroethane 98.01
    n-hexanol 8.08
    2-methoxyethanol 23.05
    isobutyl acetate 34.74
    tetrachloromethane 30.17
    n-pentyl acetate 79.18
    transcutol 212.56
    n-heptanol 11.67
    ethylbenzene 14.88
    MIBK 37.22
    2-propoxyethanol 28.84
    tert-butanol 11.78
    MTBE 19.0
    2-butoxyethanol 41.44
    propionic acid 16.69
    o-xylene 20.61
    formic acid 6.77
    diethyl ether 11.66
    m-xylene 16.43
    p-xylene 21.34
    chlorobenzene 34.23
    dimethyl carbonate 14.52
    n-octane 2.78
    formamide 13.99
    cyclopentanone 136.93
    2-pentanone 29.49
    anisole 33.16
    cyclopentyl methyl ether 67.57
    gamma-butyrolactone 136.39
    1-methoxy-2-propanol 26.79
    pyridine 47.96
    3-pentanone 30.89
    furfural 116.45
    n-dodecane 1.84
    diethylene glycol 16.11
    diisopropyl ether 10.91
    tert-amyl alcohol 15.0
    acetylacetone 66.29
    n-hexadecane 2.24
    acetophenone 61.2
    methyl propionate 26.85
    isopentyl acetate 48.57
    trichloroethylene 176.96
    n-nonanol 15.54
    cyclohexanol 22.9
    benzyl alcohol 21.9
    2-ethylhexanol 13.73
    isooctanol 14.78
    dipropyl ether 26.51
    1,2-dichlorobenzene 59.1
    ethyl lactate 29.41
    propylene carbonate 80.29
    n-methylformamide 18.35
    2-pentanol 5.73
    n-pentane 1.54
    1-propoxy-2-propanol 37.3
    1-methoxy-2-propyl acetate 59.3
    2-(2-methoxypropoxy) propanol 58.89
    mesitylene 16.5
    ε-caprolactone 112.03
    p-cymene 17.46
    epichlorohydrin 135.67
    1,1,1-trichloroethane 100.23
    2-aminoethanol 3.62
    morpholine-4-carbaldehyde 117.42
    sulfolane 371.35
    2,2,4-trimethylpentane 3.5
    2-methyltetrahydrofuran 71.11
    n-hexyl acetate 70.01
    isooctane 1.99
    2-(2-butoxyethoxy)ethanol 68.81
    sec-butyl acetate 39.46
    tert-butyl acetate 63.74
    decalin 9.05
    glycerin 8.49
    diglyme 167.69
    acrylic acid 15.68
    isopropyl myristate 25.26
    n-butyric acid 30.89
    acetyl acetate 34.52
    di(2-ethylhexyl) phthalate 25.71
    ethyl propionate 42.28
    nitromethane 56.51
    1,2-diethoxyethane 63.72
    benzonitrile 30.59
    trioctyl phosphate 18.6
    1-bromopropane 34.38
    gamma-valerolactone 186.42
    n-decanol 10.21
    triethyl phosphate 44.35
    4-methyl-2-pentanol 7.39
    propionitrile 10.22
    vinylene carbonate 62.66
    1,1,2-trichlorotrifluoroethane 127.69
    DMS 47.53
    cumene 14.59
    2-octanol 11.55
    2-hexanone 39.02
    octyl acetate 30.17
    limonene 28.75
    1,2-dimethoxyethane 73.55
    ethyl orthosilicate 42.34
    tributyl phosphate 26.36
    diacetone alcohol 63.17
    N,N-dimethylaniline 31.99
    acrylonitrile 14.15
    aniline 16.86
    1,3-propanediol 6.13
    bromobenzene 43.22
    dibromomethane 83.59
    1,1,2,2-tetrachloroethane 193.42
    2-methyl-cyclohexyl acetate 61.73
    tetrabutyl urea 43.01
    diisobutyl methanol 14.13
    2-phenylethanol 21.86
    styrene 16.09
    dioctyl adipate 54.16
    dimethyl sulfate 58.25
    ethyl butyrate 53.39
    methyl lactate 20.9
    butyl lactate 56.44
    diethyl carbonate 33.86
    propanediol butyl ether 36.44
    triethyl orthoformate 54.74
    p-tert-butyltoluene 17.47
    methyl 4-tert-butylbenzoate 81.83
    morpholine 53.86
    tert-butylamine 8.06
    n-dodecanol 7.47
    dimethoxymethane 30.4
    ethylene carbonate 53.54
    cyrene 76.25
    2-ethoxyethyl acetate 88.45
    2-ethylhexyl acetate 44.55
    1,2,4-trichlorobenzene 72.23
    4-methylpyridine 42.03
    dibutyl ether 34.14
    2,6-dimethyl-4-heptanol 14.13
    DEF 55.56
    dimethyl isosorbide 147.82
    tetrachloroethylene 121.28
    eugenol 62.43
    triacetin 116.91
    span 80 49.94
    1,4-butanediol 3.87
    1,1-dichloroethane 56.32
    2-methyl-1-pentanol 11.4
    methyl formate 15.57
    2-methyl-1-butanol 8.48
    n-decane 4.01
    butyronitrile 11.32
    3,7-dimethyl-1-octanol 18.98
    1-chlorooctane 20.02
    1-chlorotetradecane 6.63
    n-nonane 3.76
    undecane 2.52
    tert-butylcyclohexane 6.31
    cyclooctane 5.14
    cyclopentanol 24.25
    tetrahydropyran 51.19
    tert-amyl methyl ether 24.45
    2,5,8-trioxanonane 110.33
    1-hexene 6.73
    2-isopropoxyethanol 25.57
    2,2,2-trifluoroethanol 17.06
    methyl butyrate 60.44

    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