(2-Hydroxyethyl)ammonium 2-mercaptopropionate

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  • Identifiers

    CAS number
    54266-38-5

    Molecular formula
    C5H13NO3S

    SMILES
    CC(C(=O)[O-])S.C(CO)[NH3+]

    Safety labels

    Corrosive
    Corrosive

  • Odor profile

    Fragrance
    Sulfurous 76.21%
    Meaty 72.71%
    Roasted 54.25%
    Savory 51.11%
    Odorless 38.85%
    Onion 35.74%
    Cooked 33.35%
    Beefy 28.89%
    Alliaceous 27.9%
    Burnt 26.81%

     

    Flavor
    Odorless 52.28%
    Cooked 27.91%
    Sulfury 24.98%
    Mild 23.14%
    Roasted 23.07%
    Sulfurous 22.45%
    Onion 21.8%
    Bland 20.63%
    Cabbage 19.8%
    Mousy 19.71%

     

    Odor impact est.
    High

  • Properties

    pKa est.
    5.46 (weak acid)

    Molecular weight
    167.23 g/mol

    Flash point

    • 65.79 ˚C est.

  • Synonyms

    • (2-Hydroxyethyl)ammonium 2-mercaptopropionate
    • EINECS 259-050-9
    • RefChem:395908
    • 259-050-9
    • 54266-38-5
    • 2-hydroxyethylazanium;2-sulfanylpropanoate
    • DB-344590
    • NS00089780
    • 54266-38-5

  • Applications

    Primarily, this compound is used as a chemical intermediate in organic synthesis, enabling the introduction of the mercaptopropionate moiety into more complex molecules. In industrial manufacturing, it can serve as a chelating/complexing agent for metal ions and as a stabilizer and antioxidant in polymer and coating formulations, helping to extend material performance and shelf life. It is also a building block for sulfur-containing polymer systems and functional surface coatings, supporting the development of specialty adhesives and coatings. Additionally, it may be evaluated for cleaning formulations and metal-processing applications where sulfur-containing compounds contribute to cleaning efficacy or corrosion control.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 375.18
    methanol 562.51
    isopropanol 221.84
    water 242.68
    ethyl acetate 80.14
    n-propanol 191.67
    acetone 310.04
    n-butanol 176.37
    acetonitrile 139.62
    DMF 502.96
    toluene 19.85
    isobutanol 124.56
    1,4-dioxane 182.58
    methyl acetate 125.03
    THF 170.61
    2-butanone 147.22
    n-pentanol 138.62
    sec-butanol 167.78
    n-hexane 11.85
    ethylene glycol 280.47
    NMP 329.62
    cyclohexane 8.1
    DMSO 445.11
    n-butyl acetate 69.11
    n-octanol 92.54
    chloroform 59.07
    n-propyl acetate 74.82
    acetic acid 434.84
    dichloromethane 79.84
    cyclohexanone 132.01
    propylene glycol 172.92
    isopropyl acetate 62.84
    DMAc 355.49
    2-ethoxyethanol 309.08
    isopentanol 149.6
    n-heptane 9.4
    ethyl formate 123.28
    1,2-dichloroethane 66.85
    n-hexanol 101.22
    2-methoxyethanol 420.94
    isobutyl acetate 41.27
    tetrachloromethane 17.57
    n-pentyl acetate 71.04
    transcutol 589.1
    n-heptanol 75.39
    ethylbenzene 24.9
    MIBK 87.13
    2-propoxyethanol 198.27
    tert-butanol 244.64
    MTBE 107.0
    2-butoxyethanol 154.13
    propionic acid 157.97
    o-xylene 31.82
    formic acid 571.51
    diethyl ether 91.32
    m-xylene 27.31
    p-xylene 32.82
    chlorobenzene 26.6
    dimethyl carbonate 55.49
    n-octane 6.65
    formamide 551.15
    cyclopentanone 143.06
    2-pentanone 121.43
    anisole 73.02
    cyclopentyl methyl ether 70.56
    gamma-butyrolactone 165.71
    1-methoxy-2-propanol 254.27
    pyridine 86.26
    3-pentanone 74.29
    furfural 213.88
    n-dodecane 6.97
    diethylene glycol 266.08
    diisopropyl ether 32.28
    tert-amyl alcohol 200.8
    acetylacetone 156.61
    n-hexadecane 7.04
    acetophenone 99.13
    methyl propionate 74.83
    isopentyl acetate 65.17
    trichloroethylene 111.54
    n-nonanol 78.06
    cyclohexanol 90.88
    benzyl alcohol 98.88
    2-ethylhexanol 61.17
    isooctanol 62.62
    dipropyl ether 40.42
    1,2-dichlorobenzene 34.64
    ethyl lactate 64.3
    propylene carbonate 97.33
    n-methylformamide 289.16
    2-pentanol 119.85
    n-pentane 14.45
    1-propoxy-2-propanol 125.26
    1-methoxy-2-propyl acetate 80.23
    2-(2-methoxypropoxy) propanol 162.55
    mesitylene 25.15
    ε-caprolactone 126.95
    p-cymene 23.52
    epichlorohydrin 147.9
    1,1,1-trichloroethane 39.31
    2-aminoethanol 288.22
    morpholine-4-carbaldehyde 353.62
    sulfolane 206.41
    2,2,4-trimethylpentane 9.83
    2-methyltetrahydrofuran 122.24
    n-hexyl acetate 98.79
    isooctane 8.48
    2-(2-butoxyethoxy)ethanol 227.82
    sec-butyl acetate 48.96
    tert-butyl acetate 87.32
    decalin 8.31
    glycerin 260.75
    diglyme 331.1
    acrylic acid 192.37
    isopropyl myristate 43.0
    n-butyric acid 143.24
    acetyl acetate 65.43
    di(2-ethylhexyl) phthalate 57.3
    ethyl propionate 53.52
    nitromethane 450.98
    1,2-diethoxyethane 124.19
    benzonitrile 68.84
    trioctyl phosphate 43.13
    1-bromopropane 31.12
    gamma-valerolactone 247.4
    n-decanol 61.26
    triethyl phosphate 32.71
    4-methyl-2-pentanol 78.54
    propionitrile 67.25
    vinylene carbonate 100.56
    1,1,2-trichlorotrifluoroethane 180.35
    DMS 73.12
    cumene 26.27
    2-octanol 60.31
    2-hexanone 97.81
    octyl acetate 60.01
    limonene 32.74
    1,2-dimethoxyethane 310.44
    ethyl orthosilicate 32.36
    tributyl phosphate 48.29
    diacetone alcohol 171.73
    N,N-dimethylaniline 78.27
    acrylonitrile 109.04
    aniline 55.43
    1,3-propanediol 289.32
    bromobenzene 18.06
    dibromomethane 45.88
    1,1,2,2-tetrachloroethane 83.49
    2-methyl-cyclohexyl acetate 57.19
    tetrabutyl urea 74.25
    diisobutyl methanol 42.04
    2-phenylethanol 82.77
    styrene 27.45
    dioctyl adipate 68.05
    dimethyl sulfate 100.73
    ethyl butyrate 51.67
    methyl lactate 88.65
    butyl lactate 79.77
    diethyl carbonate 34.22
    propanediol butyl ether 191.73
    triethyl orthoformate 38.81
    p-tert-butyltoluene 24.46
    methyl 4-tert-butylbenzoate 104.44
    morpholine 196.6
    tert-butylamine 134.57
    n-dodecanol 47.6
    dimethoxymethane 207.02
    ethylene carbonate 72.28
    cyrene 137.41
    2-ethoxyethyl acetate 108.36
    2-ethylhexyl acetate 47.37
    1,2,4-trichlorobenzene 45.92
    4-methylpyridine 95.43
    dibutyl ether 55.76
    2,6-dimethyl-4-heptanol 42.04
    DEF 167.8
    dimethyl isosorbide 164.83
    tetrachloroethylene 72.73
    eugenol 125.91
    triacetin 111.77
    span 80 134.05
    1,4-butanediol 169.3
    1,1-dichloroethane 45.82
    2-methyl-1-pentanol 130.21
    methyl formate 233.49
    2-methyl-1-butanol 129.32
    n-decane 10.17
    butyronitrile 73.33
    3,7-dimethyl-1-octanol 81.12
    1-chlorooctane 31.39
    1-chlorotetradecane 15.07
    n-nonane 9.82
    undecane 8.3
    tert-butylcyclohexane 9.14
    cyclooctane 4.94
    cyclopentanol 96.4
    tetrahydropyran 86.79
    tert-amyl methyl ether 93.91
    2,5,8-trioxanonane 249.68
    1-hexene 33.39
    2-isopropoxyethanol 193.42
    2,2,2-trifluoroethanol 185.64
    methyl butyrate 88.58

    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