(E)-N-ethylidenehydroxylamine

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  • Identifiers

    CAS number
    107-29-9

    Molecular formula
    C2H5NO

    SMILES
    CC=NO

  • Odor profile

    Fragrance
    Pungent 49.31%
    Alliaceous 31.98%
    Sharp 31.93%
    Sulfurous 28.92%
    Onion 28.36%
    Green 28.2%
    Radish 27.94%
    Ethereal 27.04%
    Garlic 26.75%
    Cheesy 25.01%

     

    Flavor
    Pungent 56.06%
    Mustard 44.6%
    Bitter 28.15%
    Garlic 28.08%
    Sulfur 27.43%
    Odorless 24.51%
    Formyl 24.3%
    Horseradish 23.46%
    Vinegar 22.6%
    Mousy 22.0%

     

    Odor impact est.
    High

  • Properties

    XLogP3-AA
    -0.1

    pKa est.
    7.37 (neutral)

    Molecular weight
    59.07 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra fast

    Boiling point est.
    132°C

    Flash point

    • 22.9 ˚C est.

  • Synonyms

    • Acetaldoxime
    • 107-29-9
    • Acetaldehyde, oxime
    • acetoaldoxime
    • Acetaldoxime,syn & anti
    • (1E)-Ethanal oxime #
    • DTXSID2020004
    • methylnitrone
    • MFCD00002124
    • UN 2332
    • (EZ)-acetaldehyde oxime
    • (E)-N-ethylidenehydroxylamine
    • AKOS025243181
    • A0006
    • NS00002016
    • Q27103709

  • Applications

    (E)-N-ethylidenehydroxylamine, CAS 107-29-9, is a versatile building block in synthetic chemistry; it is frequently used as an intermediate to access oxime and N-alkylidene hydroxylamine derivatives; it serves as a precursor for functionalized polymers bearing oxime groups in polymer science; in pharmaceutical research it functions as a synthetic intermediate for assembling complex organic molecules; in electronics and advanced materials it is explored as a reagent to introduce oxime functionality into specialty materials; in coatings and inks it can serve as a precursor to oxime-containing resins and additives; overall, its use is typically confined to laboratory-scale synthesis and is subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 75.45
    methanol 167.84
    isopropanol 39.55
    water 189.92
    ethyl acetate 7.3
    n-propanol 43.45
    acetone 29.31
    n-butanol 39.69
    acetonitrile 47.25
    DMF 151.26
    toluene 3.59
    isobutanol 38.33
    1,4-dioxane 21.74
    methyl acetate 18.29
    THF 34.17
    2-butanone 21.87
    n-pentanol 28.03
    sec-butanol 32.35
    n-hexane 2.48
    ethylene glycol 40.28
    NMP 132.87
    cyclohexane 1.55
    DMSO 122.66
    n-butyl acetate 6.47
    n-octanol 10.51
    chloroform 31.99
    n-propyl acetate 6.6
    acetic acid 119.35
    dichloromethane 42.62
    cyclohexanone 28.31
    propylene glycol 34.16
    isopropyl acetate 4.37
    DMAc 114.42
    2-ethoxyethanol 40.27
    isopentanol 33.31
    n-heptane 1.5
    ethyl formate 27.35
    1,2-dichloroethane 21.28
    n-hexanol 13.99
    2-methoxyethanol 74.37
    isobutyl acetate 4.45
    tetrachloromethane 9.79
    n-pentyl acetate 9.69
    transcutol 80.16
    n-heptanol 11.63
    ethylbenzene 3.09
    MIBK 7.92
    2-propoxyethanol 23.55
    tert-butanol 37.71
    MTBE 12.54
    2-butoxyethanol 24.85
    propionic acid 51.36
    o-xylene 5.02
    formic acid 176.43
    diethyl ether 7.67
    m-xylene 3.3
    p-xylene 6.0
    chlorobenzene 9.41
    dimethyl carbonate 6.91
    n-octane 0.93
    formamide 169.11
    cyclopentanone 44.8
    2-pentanone 12.08
    anisole 9.24
    cyclopentyl methyl ether 11.18
    gamma-butyrolactone 57.33
    1-methoxy-2-propanol 37.12
    pyridine 32.5
    3-pentanone 8.95
    furfural 81.42
    n-dodecane 0.75
    diethylene glycol 30.29
    diisopropyl ether 2.06
    tert-amyl alcohol 36.33
    acetylacetone 10.75
    n-hexadecane 0.74
    acetophenone 13.41
    methyl propionate 10.26
    isopentyl acetate 7.1
    trichloroethylene 39.35
    n-nonanol 8.75
    cyclohexanol 19.61
    benzyl alcohol 19.63
    2-ethylhexanol 8.51
    isooctanol 10.23
    dipropyl ether 4.26
    1,2-dichlorobenzene 11.82
    ethyl lactate 8.29
    propylene carbonate 26.23
    n-methylformamide 106.7
    2-pentanol 17.52
    n-pentane 2.31
    1-propoxy-2-propanol 15.06
    1-methoxy-2-propyl acetate 6.65
    2-(2-methoxypropoxy) propanol 23.36
    mesitylene 2.51
    ε-caprolactone 28.03
    p-cymene 3.3
    epichlorohydrin 44.07
    1,1,1-trichloroethane 12.72
    2-aminoethanol 64.59
    morpholine-4-carbaldehyde 75.79
    sulfolane 83.97
    2,2,4-trimethylpentane 2.06
    2-methyltetrahydrofuran 24.15
    n-hexyl acetate 11.51
    isooctane 0.95
    2-(2-butoxyethoxy)ethanol 31.36
    sec-butyl acetate 3.73
    tert-butyl acetate 5.04
    decalin 1.37
    glycerin 53.48
    diglyme 50.46
    acrylic acid 64.72
    isopropyl myristate 4.26
    n-butyric acid 43.08
    acetyl acetate 5.94
    di(2-ethylhexyl) phthalate 10.08
    ethyl propionate 4.86
    nitromethane 115.26
    1,2-diethoxyethane 12.52
    benzonitrile 22.35
    trioctyl phosphate 6.09
    1-bromopropane 11.41
    gamma-valerolactone 65.35
    n-decanol 6.26
    triethyl phosphate 5.22
    4-methyl-2-pentanol 10.75
    propionitrile 26.84
    vinylene carbonate 29.68
    1,1,2-trichlorotrifluoroethane 53.54
    DMS 8.96
    cumene 3.59
    2-octanol 7.8
    2-hexanone 10.08
    octyl acetate 6.46
    limonene 4.45
    1,2-dimethoxyethane 39.22
    ethyl orthosilicate 5.15
    tributyl phosphate 7.59
    diacetone alcohol 16.1
    N,N-dimethylaniline 11.36
    acrylonitrile 44.87
    aniline 17.45
    1,3-propanediol 58.5
    bromobenzene 6.5
    dibromomethane 23.93
    1,1,2,2-tetrachloroethane 27.1
    2-methyl-cyclohexyl acetate 7.2
    tetrabutyl urea 11.09
    diisobutyl methanol 4.93
    2-phenylethanol 11.78
    styrene 4.07
    dioctyl adipate 8.73
    dimethyl sulfate 17.87
    ethyl butyrate 5.23
    methyl lactate 15.93
    butyl lactate 13.82
    diethyl carbonate 4.34
    propanediol butyl ether 31.31
    triethyl orthoformate 5.17
    p-tert-butyltoluene 2.96
    methyl 4-tert-butylbenzoate 15.25
    morpholine 36.62
    tert-butylamine 22.18
    n-dodecanol 4.64
    dimethoxymethane 24.34
    ethylene carbonate 19.08
    cyrene 25.65
    2-ethoxyethyl acetate 13.12
    2-ethylhexyl acetate 5.64
    1,2,4-trichlorobenzene 15.14
    4-methylpyridine 28.88
    dibutyl ether 6.41
    2,6-dimethyl-4-heptanol 4.93
    DEF 28.39
    dimethyl isosorbide 29.37
    tetrachloroethylene 26.53
    eugenol 20.1
    triacetin 13.51
    span 80 21.61
    1,4-butanediol 32.07
    1,1-dichloroethane 15.01
    2-methyl-1-pentanol 27.8
    methyl formate 59.24
    2-methyl-1-butanol 35.94
    n-decane 1.16
    butyronitrile 29.05
    3,7-dimethyl-1-octanol 10.2
    1-chlorooctane 3.71
    1-chlorotetradecane 1.67
    n-nonane 1.16
    undecane 0.89
    tert-butylcyclohexane 1.6
    cyclooctane 0.69
    cyclopentanol 30.11
    tetrahydropyran 13.44
    tert-amyl methyl ether 10.97
    2,5,8-trioxanonane 38.83
    1-hexene 6.83
    2-isopropoxyethanol 21.89
    2,2,2-trifluoroethanol 57.51
    methyl butyrate 10.99

    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