2-Imidazolidinone

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  • Identifiers

    CAS number
    120-93-4

    Molecular formula
    C3H6N2O

    SMILES
    C1CNC(=O)N1

    Safety labels

    Irritant
    Irritant

    Health Hazard
    Health

  • Odor profile

    Fragrance
    Odorless 44.3%
    Sweet 38.86%
    Nutty 37.39%
    Fishy 32.08%
    Popcorn 28.48%
    Burnt 27.09%
    Roasted 24.94%
    Spicy 20.91%
    Caramellic 19.86%
    Musty 17.97%

     

    Flavor
    Bitter 66.19%
    Odorless 23.28%
    Alkaline 21.25%
    Shrimp 20.79%
    Cereal 19.95%
    Nitrile 19.93%
    Taco 19.74%
    Amine 19.66%
    Rotten 19.64%
    Sweet-like 19.37%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    -1.3

    pKa est.
    7.56 (neutral)

    Molecular weight
    86.09 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    319°C

    Melting point expt.

    • 131 °C

    Flash point

    • 151.15 ˚C est.

    Solubility expt.

    • VERY SOL IN WATER & IN HOT ALC; DIFFICULTLY SOL IN ETHER
    • SLIGHTLY SOL IN CHLOROFORM

  • Synonyms

    • 2-Imidazolidone
    • imidazolidin-2-one
    • 120-93-4
    • 2-Imidazolidinone
    • ETHYLENEUREA
    • imidazolidinone
    • Ethylene urea
    • 2-Oxoimidazolidine
    • 1,3-Ethyleneurea
    • Monoethyleneurea
    • 2-Oxomidazolidine
    • SD 6073
    • Urea, N,N'-(1,2-ethanediyl)-
    • DTXSID0020602
    • NSC-21314
    • DTXCID20602
    • 2K48456N55
    • CHEBI:37001
    • RefChem:596753
    • CHEBI:55370
    • 204-436-4
    • N,N'-Ethyleneurea
    • Imidazolid-2-one
    • 2-imidazolidinon
    • Urea, 1,3-ethylene-
    • MFCD00005257
    • NSC 21314
    • 2-Imidazolidone, 96%
    • Urea,3-ethylene-
    • WLN: T5MVMTJ
    • Urea,N'-(1,2-ethanediyl)-
    • HSDB 4021
    • EINECS 204-436-4
    • imidazolidone
    • 2-imidazolinone
    • AI3-22151
    • imidazolin-2-one
    • mancozeb TP2
    • UNII-2K48456N55
    • Imidazoliden-2-one
    • 2-oxo-imidazolidine
    • Clonidine Impurity 6
    • EC 204-436-4
    • ETHYLENEUREA [HSDB]
    • SCHEMBL2479
    • SCHEMBL9827
    • 2-Imidazolidone - Anhydrous
    • SCHEMBL16730
    • CHEMBL12034
    • SCHEMBL293787
    • orb1310433
    • SCHEMBL1599923
    • SCHEMBL2707176
    • SCHEMBL2783204
    • SCHEMBL3376425
    • SCHEMBL6274768
    • SCHEMBL8863980
    • 2-IMIDAZOLIDINONE [MI]
    • NSC3338
    • BB_SC-12808
    • NSC-3338
    • NSC21314
    • Tox21_200783
    • EBC-04357
    • MSK158188
    • AKOS000121325
    • FI47232
    • HY-W031536
    • NCGC00248832-01
    • NCGC00258337-01
    • AS-13128
    • BP-21148
    • CAS-120-93-4
    • PD065555
    • DB-021217
    • DB-021218
    • CS-0075560
    • I0005
    • NS00008037
    • EN300-21266
    • D71145
    • 2-Imidazolidinon 100 microg/mL in Acetonitrile
    • F078654
    • 2-Imidazolidone, PESTANAL(R), analytical standard
    • Q2813813
    • F0001-0335
    • Z104494954
    • InChI=1/C3H6N2O/c6-3-4-1-2-5-3/h1-2H2,(H2,4,5,6
    • 65118-65-2
    • 120-93-4

  • Applications

    2-Imidazolidinone (CAS 120-93-4) is a versatile intermediate in organic synthesis. It serves as a precursor to imidazolidinone derivatives and related heterocycles in pharmaceutical and agrochemical development. In polymer science and materials chemistry, it is used as a building block for imidazolidinone-containing polymers and specialty resins. It is also studied as a scaffold for organocatalysis and as a ligand precursor for catalytic systems, enabling enantioselective transformations. Additionally, it can function as a reactive monomer or additive in coatings, inks, and specialty adhesive formulations. In research settings, it is employed as a reagent for the synthesis of more complex heterocycles. Subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 125.72
    methanol 374.35
    isopropanol 56.09
    water 749.97
    ethyl acetate 6.56
    n-propanol 59.02
    acetone 22.85
    n-butanol 38.23
    acetonitrile 20.67
    DMF 305.64
    toluene 1.98
    isobutanol 37.85
    1,4-dioxane 22.11
    methyl acetate 10.37
    THF 32.4
    2-butanone 11.71
    n-pentanol 23.02
    sec-butanol 32.01
    n-hexane 0.71
    ethylene glycol 153.61
    NMP 190.01
    cyclohexane 0.59
    DMSO 186.01
    n-butyl acetate 6.27
    n-octanol 7.97
    chloroform 22.26
    n-propyl acetate 5.24
    acetic acid 266.81
    dichloromethane 23.08
    cyclohexanone 22.03
    propylene glycol 120.92
    isopropyl acetate 4.53
    DMAc 161.91
    2-ethoxyethanol 56.79
    isopentanol 23.73
    n-heptane 0.6
    ethyl formate 25.43
    1,2-dichloroethane 9.57
    n-hexanol 11.02
    2-methoxyethanol 137.87
    isobutyl acetate 3.46
    tetrachloromethane 3.31
    n-pentyl acetate 7.55
    transcutol 55.93
    n-heptanol 9.46
    ethylbenzene 1.39
    MIBK 5.89
    2-propoxyethanol 36.55
    tert-butanol 32.3
    MTBE 6.74
    2-butoxyethanol 29.89
    propionic acid 73.16
    o-xylene 2.59
    formic acid 548.93
    diethyl ether 5.12
    m-xylene 2.19
    p-xylene 2.47
    chlorobenzene 4.99
    dimethyl carbonate 9.02
    n-octane 0.38
    formamide 361.27
    cyclopentanone 38.48
    2-pentanone 8.54
    anisole 4.83
    cyclopentyl methyl ether 8.97
    gamma-butyrolactone 62.79
    1-methoxy-2-propanol 69.96
    pyridine 24.99
    3-pentanone 4.88
    furfural 87.77
    n-dodecane 0.34
    diethylene glycol 57.92
    diisopropyl ether 1.46
    tert-amyl alcohol 25.58
    acetylacetone 9.81
    n-hexadecane 0.36
    acetophenone 8.38
    methyl propionate 10.21
    isopentyl acetate 5.98
    trichloroethylene 21.26
    n-nonanol 6.9
    cyclohexanol 16.94
    benzyl alcohol 14.78
    2-ethylhexanol 5.29
    isooctanol 7.2
    dipropyl ether 3.23
    1,2-dichlorobenzene 5.75
    ethyl lactate 11.82
    propylene carbonate 30.31
    n-methylformamide 182.82
    2-pentanol 14.46
    n-pentane 0.9
    1-propoxy-2-propanol 20.62
    1-methoxy-2-propyl acetate 9.02
    2-(2-methoxypropoxy) propanol 21.08
    mesitylene 1.6
    ε-caprolactone 24.37
    p-cymene 1.83
    epichlorohydrin 34.2
    1,1,1-trichloroethane 4.7
    2-aminoethanol 171.3
    morpholine-4-carbaldehyde 107.87
    sulfolane 88.24
    2,2,4-trimethylpentane 0.7
    2-methyltetrahydrofuran 15.94
    n-hexyl acetate 8.53
    isooctane 0.39
    2-(2-butoxyethoxy)ethanol 27.01
    sec-butyl acetate 3.0
    tert-butyl acetate 4.47
    decalin 0.48
    glycerin 176.68
    diglyme 39.95
    acrylic acid 111.73
    isopropyl myristate 2.92
    n-butyric acid 49.61
    acetyl acetate 6.2
    di(2-ethylhexyl) phthalate 9.23
    ethyl propionate 4.49
    nitromethane 144.11
    1,2-diethoxyethane 6.92
    benzonitrile 13.15
    trioctyl phosphate 5.75
    1-bromopropane 4.55
    gamma-valerolactone 71.18
    n-decanol 4.79
    triethyl phosphate 4.69
    4-methyl-2-pentanol 7.36
    propionitrile 14.36
    vinylene carbonate 35.38
    1,1,2-trichlorotrifluoroethane 71.12
    DMS 8.31
    cumene 1.54
    2-octanol 5.65
    2-hexanone 5.46
    octyl acetate 4.96
    limonene 2.42
    1,2-dimethoxyethane 36.15
    ethyl orthosilicate 4.12
    tributyl phosphate 6.12
    diacetone alcohol 14.52
    N,N-dimethylaniline 6.31
    acrylonitrile 32.18
    aniline 12.41
    1,3-propanediol 117.69
    bromobenzene 3.06
    dibromomethane 10.69
    1,1,2,2-tetrachloroethane 17.23
    2-methyl-cyclohexyl acetate 5.11
    tetrabutyl urea 9.49
    diisobutyl methanol 3.2
    2-phenylethanol 9.88
    styrene 1.88
    dioctyl adipate 6.04
    dimethyl sulfate 25.02
    ethyl butyrate 4.88
    methyl lactate 28.48
    butyl lactate 14.91
    diethyl carbonate 4.14
    propanediol butyl ether 37.88
    triethyl orthoformate 4.96
    p-tert-butyltoluene 1.78
    methyl 4-tert-butylbenzoate 13.52
    morpholine 40.93
    tert-butylamine 13.82
    n-dodecanol 3.4
    dimethoxymethane 35.78
    ethylene carbonate 22.22
    cyrene 31.12
    2-ethoxyethyl acetate 10.63
    2-ethylhexyl acetate 4.5
    1,2,4-trichlorobenzene 7.26
    4-methylpyridine 18.83
    dibutyl ether 3.18
    2,6-dimethyl-4-heptanol 3.2
    DEF 25.64
    dimethyl isosorbide 22.94
    tetrachloroethylene 14.09
    eugenol 19.36
    triacetin 11.67
    span 80 23.72
    1,4-butanediol 56.98
    1,1-dichloroethane 7.22
    2-methyl-1-pentanol 15.07
    methyl formate 94.29
    2-methyl-1-butanol 25.76
    n-decane 0.48
    butyronitrile 15.0
    3,7-dimethyl-1-octanol 6.15
    1-chlorooctane 1.78
    1-chlorotetradecane 0.85
    n-nonane 0.46
    undecane 0.39
    tert-butylcyclohexane 0.52
    cyclooctane 0.29
    cyclopentanol 33.2
    tetrahydropyran 10.79
    tert-amyl methyl ether 6.1
    2,5,8-trioxanonane 29.96
    1-hexene 2.25
    2-isopropoxyethanol 23.46
    2,2,2-trifluoroethanol 112.04
    methyl butyrate 8.35

    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