Octadecanoic acid, hydroxy-, 2-hydroxyethyl ester

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  • Identifiers

    CAS number
    33907-46-9

    Molecular formula
    C20H40O4

    SMILES
    CCCCCCCCCCCCCCCCC(C(=O)OC(C)O)O

    Safety labels

  • Odor profile

    Fragrance
    Waxy 58.92%
    Fatty 58.58%
    Oily 47.95%
    Odorless 35.09%
    Milky 27.3%
    Creamy 27.3%
    Buttery 26.66%
    Fruity 26.35%
    Sweet 26.11%
    Dairy 23.32%

     

    Flavor
    Waxy 49.78%
    Mild 42.46%
    Fatty 41.16%
    Bland 36.55%
    Oily 35.78%
    Odorless 33.42%
    Faint 28.31%
    Soapy 26.96%
    Fat 25.0%
    Slightly waxy 24.05%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    7.6

    pKa est.
    7.1 (neutral)

    Molecular weight
    344.5 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    426°C

    Flash point

    • 182.98 ˚C est.

  • Synonyms

    • 33907-46-9
    • Octadecanoic acid, hydroxy-, 2-hydroxyethyl ester
    • RefChem:855710
    • DTXSID901068709
    • 1-hydroxyethyl 2-hydroxyoctadecanoate
    • 2-Hydroxyethyl hydroxystearate
    • Glycol monohydroxystearate
    • SCHEMBL28334791
    • VZURHXVELPKQNZ-UHFFFAOYSA-N
    • 2-Hydroxyethyl hydroxyoctadecanoate
    • Ethylene glycol monohydroxy stearate
    • EINECS 251-732-4
    • NS00013714
    • Hydroxyoctadecanoic acid, 2-hydroxyethyl ester
    • 33907-46-9

  • Applications

    Octadecanoic acid, hydroxy-, 2-hydroxyethyl ester (CAS 33907-46-9), commonly called 2-hydroxyethyl stearate, is used as an industrial intermediate and functional additive across several sectors: as a polyol component or chain extender in polyurethane and polyester formulations to impart flexibility; as a plasticizer and processing aid in coatings, inks, adhesives, and polymer blends to improve flow and gloss; in cosmetics and personal care as an emollient and texture modifier; as a starting material for the synthesis of other fatty-ester-based surfactants and specialty esters; and as a mild solvent or carrier in cleaning and household products where a fatty ester can aid formulation.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 39.16
    methanol 59.23
    isopropanol 49.17
    water 0.1
    ethyl acetate 140.86
    n-propanol 52.9
    acetone 141.33
    n-butanol 52.68
    acetonitrile 46.42
    DMF 316.55
    toluene 51.18
    isobutanol 54.73
    1,4-dioxane 186.14
    methyl acetate 108.55
    THF 642.96
    2-butanone 165.34
    n-pentanol 53.13
    sec-butanol 66.51
    n-hexane 13.66
    ethylene glycol 6.47
    NMP 670.32
    cyclohexane 70.62
    DMSO 620.4
    n-butyl acetate 170.12
    n-octanol 66.49
    chloroform 329.2
    n-propyl acetate 206.66
    acetic acid 88.65
    dichloromethane 354.48
    cyclohexanone 561.87
    propylene glycol 19.27
    isopropyl acetate 150.98
    DMAc 527.15
    2-ethoxyethanol 135.91
    isopentanol 76.27
    n-heptane 13.3
    ethyl formate 82.94
    1,2-dichloroethane 305.85
    n-hexanol 46.84
    2-methoxyethanol 150.25
    isobutyl acetate 136.46
    tetrachloromethane 89.86
    n-pentyl acetate 289.86
    transcutol 533.28
    n-heptanol 61.62
    ethylbenzene 45.76
    MIBK 170.72
    2-propoxyethanol 126.9
    tert-butanol 116.2
    MTBE 139.61
    2-butoxyethanol 181.29
    propionic acid 88.75
    o-xylene 59.77
    formic acid 25.7
    diethyl ether 83.66
    m-xylene 46.77
    p-xylene 70.97
    chlorobenzene 100.93
    dimethyl carbonate 57.94
    n-octane 8.99
    formamide 59.41
    cyclopentanone 596.14
    2-pentanone 177.36
    anisole 98.15
    cyclopentyl methyl ether 272.46
    gamma-butyrolactone 521.73
    1-methoxy-2-propanol 153.23
    pyridine 188.24
    3-pentanone 152.44
    furfural 320.94
    n-dodecane 5.24
    diethylene glycol 60.08
    diisopropyl ether 48.49
    tert-amyl alcohol 125.27
    acetylacetone 255.43
    n-hexadecane 6.32
    acetophenone 157.29
    methyl propionate 130.47
    isopentyl acetate 180.54
    trichloroethylene 448.65
    n-nonanol 66.57
    cyclohexanol 152.68
    benzyl alcohol 73.26
    2-ethylhexanol 53.93
    isooctanol 66.44
    dipropyl ether 95.39
    1,2-dichlorobenzene 135.26
    ethyl lactate 94.06
    propylene carbonate 266.44
    n-methylformamide 99.15
    2-pentanol 50.77
    n-pentane 9.1
    1-propoxy-2-propanol 134.07
    1-methoxy-2-propyl acetate 171.69
    2-(2-methoxypropoxy) propanol 140.23
    mesitylene 42.06
    ε-caprolactone 453.22
    p-cymene 39.9
    epichlorohydrin 462.54
    1,1,1-trichloroethane 298.89
    2-aminoethanol 24.3
    morpholine-4-carbaldehyde 377.67
    sulfolane 1081.09
    2,2,4-trimethylpentane 13.54
    2-methyltetrahydrofuran 372.81
    n-hexyl acetate 248.07
    isooctane 7.28
    2-(2-butoxyethoxy)ethanol 197.48
    sec-butyl acetate 152.62
    tert-butyl acetate 237.09
    decalin 28.31
    glycerin 38.98
    diglyme 461.77
    acrylic acid 63.55
    isopropyl myristate 74.79
    n-butyric acid 173.61
    acetyl acetate 104.41
    di(2-ethylhexyl) phthalate 67.47
    ethyl propionate 163.48
    nitromethane 201.12
    1,2-diethoxyethane 198.06
    benzonitrile 96.58
    trioctyl phosphate 56.92
    1-bromopropane 141.41
    gamma-valerolactone 659.76
    n-decanol 40.96
    triethyl phosphate 96.99
    4-methyl-2-pentanol 45.74
    propionitrile 57.51
    vinylene carbonate 190.6
    1,1,2-trichlorotrifluoroethane 331.69
    DMS 129.18
    cumene 39.23
    2-octanol 60.31
    2-hexanone 175.41
    octyl acetate 99.41
    limonene 74.86
    1,2-dimethoxyethane 324.4
    ethyl orthosilicate 95.42
    tributyl phosphate 73.57
    diacetone alcohol 245.96
    N,N-dimethylaniline 85.37
    acrylonitrile 65.06
    aniline 62.86
    1,3-propanediol 51.25
    bromobenzene 114.26
    dibromomethane 229.47
    1,1,2,2-tetrachloroethane 487.76
    2-methyl-cyclohexyl acetate 156.69
    tetrabutyl urea 120.94
    diisobutyl methanol 44.95
    2-phenylethanol 68.2
    styrene 50.28
    dioctyl adipate 137.23
    dimethyl sulfate 168.9
    ethyl butyrate 161.57
    methyl lactate 81.56
    butyl lactate 187.38
    diethyl carbonate 89.4
    propanediol butyl ether 142.47
    triethyl orthoformate 133.39
    p-tert-butyltoluene 39.06
    methyl 4-tert-butylbenzoate 192.46
    morpholine 286.83
    tert-butylamine 70.31
    n-dodecanol 27.46
    dimethoxymethane 153.09
    ethylene carbonate 182.01
    cyrene 179.88
    2-ethoxyethyl acetate 273.8
    2-ethylhexyl acetate 147.68
    1,2,4-trichlorobenzene 166.44
    4-methylpyridine 167.87
    dibutyl ether 125.04
    2,6-dimethyl-4-heptanol 44.95
    DEF 273.98
    dimethyl isosorbide 317.95
    tetrachloroethylene 311.53
    eugenol 150.89
    triacetin 251.31
    span 80 139.55
    1,4-butanediol 24.64
    1,1-dichloroethane 208.5
    2-methyl-1-pentanol 69.9
    methyl formate 70.31
    2-methyl-1-butanol 69.0
    n-decane 12.35
    butyronitrile 73.05
    3,7-dimethyl-1-octanol 65.61
    1-chlorooctane 67.74
    1-chlorotetradecane 18.72
    n-nonane 11.93
    undecane 7.35
    tert-butylcyclohexane 19.52
    cyclooctane 16.15
    cyclopentanol 169.99
    tetrahydropyran 300.08
    tert-amyl methyl ether 135.68
    2,5,8-trioxanonane 255.05
    1-hexene 39.37
    2-isopropoxyethanol 118.55
    2,2,2-trifluoroethanol 56.37
    methyl butyrate 257.3

    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