Monoethanolamine sulfite

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  • Identifiers

    CAS number
    13427-63-9

    Molecular formula
    C2H9NO4S

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

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Sweet 71.65%
    Alcoholic 70.43%
    Ethereal 61.39%
    Fermented 61.04%
    Solvent 56.31%
    Oily 49.05%
    Fruity 44.31%
    Winey 44.18%
    Musty 36.63%
    Pungent 35.86%

     

    Flavor
    Alcoholic 64.37%
    Bitter 50.07%
    Musty 42.69%
    Sweet 42.34%
    Fusel 41.33%
    Pungent 40.21%
    Alcohol 39.56%
    Odorless 31.77%
    Oil 29.89%
    Ethereal 27.91%

     

    Odor impact est.
    Low

  • Properties

    pKa est.
    8.14 (weak base)

    Molecular weight
    143.16 g/mol

    Flash point

    • 80.46 ˚C est.

  • Synonyms

    • 2-Hydroxyethylammonium hydrogen sulphite
    • UNII-2Z55RA7FXV
    • EINECS 236-546-3
    • 2Z55RA7FXV
    • DTXSID2050401
    • M-ESN
    • RefChem:159569
    • MEA-SULFITE [INCI]
    • DTXCID3029449
    • 2-AMINOETHANOL HYDROSULFITE
    • ETHANOL, 2-AMINO-, SULFITE (1:1)
    • ETHANOL, 2-AMINO-, SULFITE (1:1) (SALT)
    • ETHANOLAMINE SULFITE (1:1)
    • MEA-SULFITE
    • MONAMINE BTN
    • MONOETHANOLAMINE BISULFITE
    • MONOETHANOLAMINE SESQUISULFITE
    • MONOETHANOLAMINE SULFITE
    • THIOSET M
    • 13427-63-9
    • hydrogen sulfite;2-hydroxyethylazanium
    • 2-Hydroxyethan-1-aminium hydrogen sulfite
    • 13427-63-9

  • Applications

    Monoethanolamine sulfite (CAS 13427-63-9) is used as an intermediate and processing aid in chemical manufacturing; it serves as a building block for sulfitation-type reactions and related organic syntheses. In industry, it can function as a buffering or pH-adjusting agent in numerous formulations, and as a stabilizer and antioxidant component in polymers, coatings, and adhesive systems. It may act as a chelating or complexing agent in cleaning formulations and water-treatment applications, helping to sequester metal ions and improve formulation stability. In some contexts, it is used as a processing solvent or processing aid to facilitate manufacturing steps, subject to regulatory and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 15.86
    methanol 73.45
    isopropanol 3.6
    water 1393.95
    ethyl acetate 0.82
    n-propanol 8.31
    acetone 1.46
    n-butanol 5.38
    acetonitrile 1.67
    DMF 18.58
    toluene 0.13
    isobutanol 3.79
    1,4-dioxane 1.5
    methyl acetate 0.81
    THF 3.55
    2-butanone 0.87
    n-pentanol 2.55
    sec-butanol 2.93
    n-hexane 0.16
    ethylene glycol 115.99
    NMP 36.86
    cyclohexane 0.24
    DMSO 41.04
    n-butyl acetate 1.31
    n-octanol 0.88
    chloroform 1.08
    n-propyl acetate 0.71
    acetic acid 134.3
    dichloromethane 1.03
    cyclohexanone 3.03
    propylene glycol 49.54
    isopropyl acetate 0.47
    DMAc 10.95
    2-ethoxyethanol 11.0
    isopentanol 2.66
    n-heptane 0.34
    ethyl formate 4.75
    1,2-dichloroethane 0.6
    n-hexanol 3.15
    2-methoxyethanol 34.18
    isobutyl acetate 0.4
    tetrachloromethane 0.78
    n-pentyl acetate 0.93
    transcutol 12.0
    n-heptanol 2.07
    ethylbenzene 0.11
    MIBK 0.42
    2-propoxyethanol 10.86
    tert-butanol 2.51
    MTBE 0.29
    2-butoxyethanol 8.38
    propionic acid 24.81
    o-xylene 0.22
    formic acid 629.57
    diethyl ether 0.35
    m-xylene 0.16
    p-xylene 0.2
    chlorobenzene 0.3
    dimethyl carbonate 0.93
    n-octane 0.12
    formamide 236.71
    cyclopentanone 5.17
    2-pentanone 0.76
    anisole 0.28
    cyclopentyl methyl ether 1.22
    gamma-butyrolactone 10.39
    1-methoxy-2-propanol 10.29
    pyridine 1.82
    3-pentanone 0.56
    furfural 18.96
    n-dodecane 0.06
    diethylene glycol 33.93
    diisopropyl ether 0.14
    tert-amyl alcohol 2.59
    acetylacetone 1.11
    n-hexadecane 0.05
    acetophenone 0.7
    methyl propionate 1.09
    isopentyl acetate 0.95
    trichloroethylene 1.37
    n-nonanol 0.8
    cyclohexanol 3.64
    benzyl alcohol 1.68
    2-ethylhexanol 1.4
    isooctanol 1.34
    dipropyl ether 0.75
    1,2-dichlorobenzene 0.41
    ethyl lactate 2.69
    propylene carbonate 4.89
    n-methylformamide 35.04
    2-pentanol 1.54
    n-pentane 0.16
    1-propoxy-2-propanol 5.9
    1-methoxy-2-propyl acetate 1.47
    2-(2-methoxypropoxy) propanol 4.03
    mesitylene 0.15
    ε-caprolactone 4.51
    p-cymene 0.31
    epichlorohydrin 2.81
    1,1,1-trichloroethane 0.31
    2-aminoethanol 91.76
    morpholine-4-carbaldehyde 17.27
    sulfolane 26.8
    2,2,4-trimethylpentane 0.1
    2-methyltetrahydrofuran 1.63
    n-hexyl acetate 0.81
    isooctane 0.06
    2-(2-butoxyethoxy)ethanol 6.9
    sec-butyl acetate 0.34
    tert-butyl acetate 0.46
    decalin 0.1
    glycerin 137.87
    diglyme 8.39
    acrylic acid 43.06
    isopropyl myristate 0.28
    n-butyric acid 18.89
    acetyl acetate 0.97
    di(2-ethylhexyl) phthalate 1.13
    ethyl propionate 0.56
    nitromethane 30.11
    1,2-diethoxyethane 0.75
    benzonitrile 0.99
    trioctyl phosphate 1.0
    1-bromopropane 0.26
    gamma-valerolactone 11.31
    n-decanol 0.57
    triethyl phosphate 1.06
    4-methyl-2-pentanol 0.75
    propionitrile 1.28
    vinylene carbonate 5.13
    1,1,2-trichlorotrifluoroethane 23.42
    DMS 0.77
    cumene 0.15
    2-octanol 0.77
    2-hexanone 0.53
    octyl acetate 0.53
    limonene 0.44
    1,2-dimethoxyethane 3.63
    ethyl orthosilicate 1.04
    tributyl phosphate 1.09
    diacetone alcohol 2.65
    N,N-dimethylaniline 0.46
    acrylonitrile 2.94
    aniline 1.26
    1,3-propanediol 56.68
    bromobenzene 0.17
    dibromomethane 0.62
    1,1,2,2-tetrachloroethane 1.28
    2-methyl-cyclohexyl acetate 0.96
    tetrabutyl urea 1.63
    diisobutyl methanol 0.64
    2-phenylethanol 1.63
    styrene 0.14
    dioctyl adipate 0.72
    dimethyl sulfate 3.19
    ethyl butyrate 1.06
    methyl lactate 6.18
    butyl lactate 3.66
    diethyl carbonate 0.71
    propanediol butyl ether 10.45
    triethyl orthoformate 1.17
    p-tert-butyltoluene 0.28
    methyl 4-tert-butylbenzoate 1.79
    morpholine 3.75
    tert-butylamine 1.07
    n-dodecanol 0.43
    dimethoxymethane 2.2
    ethylene carbonate 3.41
    cyrene 7.9
    2-ethoxyethyl acetate 1.12
    2-ethylhexyl acetate 0.76
    1,2,4-trichlorobenzene 0.51
    4-methylpyridine 1.03
    dibutyl ether 0.34
    2,6-dimethyl-4-heptanol 0.64
    DEF 3.09
    dimethyl isosorbide 5.75
    tetrachloroethylene 2.36
    eugenol 3.58
    triacetin 1.35
    span 80 6.46
    1,4-butanediol 20.03
    1,1-dichloroethane 0.28
    2-methyl-1-pentanol 1.65
    methyl formate 14.73
    2-methyl-1-butanol 3.31
    n-decane 0.08
    butyronitrile 1.4
    3,7-dimethyl-1-octanol 0.61
    1-chlorooctane 0.16
    1-chlorotetradecane 0.08
    n-nonane 0.09
    undecane 0.06
    tert-butylcyclohexane 0.09
    cyclooctane 0.11
    cyclopentanol 7.31
    tetrahydropyran 0.95
    tert-amyl methyl ether 0.36
    2,5,8-trioxanonane 6.72
    1-hexene 0.26
    2-isopropoxyethanol 3.82
    2,2,2-trifluoroethanol 64.36
    methyl butyrate 1.2

    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