N,N-Diethylaniline

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  • Identifiers

    CAS number
    91-66-7

    Molecular formula
    C10H15N

    SMILES
    CCN(CC)C1=CC=CC=C1

    Safety labels

    Acute Toxic
    Acute Toxic

    Health Hazard
    Health

    Environmental Hazard
    Environmental

  • Odor profile

    Fragrance
    Fishy 39.81%
    Cheesy 34.72%
    Floral 33.22%
    Sweet 31.53%
    Ripe 30.76%
    Animal 30.45%
    Fruity 27.63%
    Burnt 27.18%
    Fresh 26.74%
    Citrus 26.46%

     

    Flavor
    Green 47.62%
    Herbal 31.07%
    Floral 29.36%
    Fresh 24.39%
    Earthy 23.35%
    Mild 22.25%
    Musty 21.61%
    Herb 20.97%
    Pepper 20.12%
    Woody 19.83%

     

    Odor impact est.
    High

  • Properties

    XLogP3-AA
    3.3

    pKa est.
    6.29 (neutral)

    Molecular weight
    149.23 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Moderate

    Melting point expt.

    • -37.8 °F (NTP, 1992)
    • -38.8 °C
    • -38 °C

    Boiling point

    • 419.9 °F at 760 mmHg ; 198 °F at 10 mmHg (NTP, 1992)
    • 216.3 °C

    Flash point

    • 76.94 ˚C est.
    • 185 °F (NTP, 1992)
    • 185 °F (85 °C) (CLOSED CUP)
    • 79 °C c.c.

    Solubility expt.

    • less than 1 mg/mL at 76.1 °F (NTP, 1992)
    • 1 g dissolves in 70 ml of water at 12 °C; slightly sol in alcohol, chloroform and ether
    • Sol in acetone
    • In water, 139 mg/l @ 25 °C
    • Solubility in water, g/100ml at 25 °C: 0.014

  • Synonyms

    • N,N-DIETHYLANILINE
    • 91-66-7
    • Diethylaniline
    • N,N-Diethylanilin
    • Benzenamine, N,N-diethyl-
    • Diethylphenylamine
    • N,N-Diethyl aniline
    • Diaethylanilin
    • Aniline, N,N-diethyl-
    • Phenyldiethylamine
    • N,N-Diethylaminobenzene
    • N-Phenyldiethylamine
    • N,N-Diethylbenzenamine
    • diethyl aniline
    • Diaethylanilin [German]
    • N,N-Diethylaniline-4-D
    • N,N-Diethylanilin [Czech]
    • NSC 7205
    • CCRIS 2847
    • HSDB 1639
    • UNII-1WR1HJ2PGW
    • Benzamine, N,N-diethyl-
    • EINECS 202-088-8
    • UN2432
    • diethyl-phenyl-amine
    • (diethylamino)benzene
    • N, N-Diethylaniline
    • DTXSID8021800
    • AI3-52227
    • NSC-7205
    • 1WR1HJ2PGW
    • DIETHYLANILINE [MI]
    • DIETHYL ANILINE, N,N-
    • DTXCID701800
    • EC 202-088-8
    • N,N-DIETHYLANILINE [HSDB]
    • 2065185-74-0
    • UN 2432
    • N,N-DI(ETHYL-1,1-D2)ANILINE
    • DIAETHYLANILIN (GERMAN)
    • N,N-DIETHYLANILIN (CZECH)
    • CAS-91-66-7
    • MFCD00009042
    • N,NDiethylanilin
    • NPhenyldiethylamine
    • N,N-diethyianiline
    • diethylamino benzene
    • Et2NPh
    • PhNEt2
    • N,N-diethyl-aniline
    • N,NDiethylbenzenamine
    • Aniline, N,Ndiethyl
    • N,NDiethylaminobenzene
    • Benzenamine, N,Ndiethyl
    • N,N-DEA
    • N,N-Diethylaniline, 98%
    • SCHEMBL17594
    • MLS002303040
    • BIDD:GT0823
    • N,N-Diethyl-N-phenylamine #
    • ANILINE, 2,6-DIETHYL
    • N,N-Diethylaniline, >=99%
    • CHEMBL252071
    • WLN: 2N2&R
    • NSC7205
    • HMS3039C12
    • BENZENEAMINE, 2,6-DIETHYL-
    • Tox21_201496
    • Tox21_300569
    • MFCD31699978
    • STL263867
    • AKOS000119089
    • FD46365
    • PS-6141
    • NCGC00091331-01
    • NCGC00091331-02
    • NCGC00091331-03
    • NCGC00254308-01
    • NCGC00259047-01
    • N,N-Diethylaminobenzene;Diethylphenylamine
    • SMR001307329
    • SY246295
    • BENZENEAMINE, 2,6-DIETHYL-(9CI)
    • D0475
    • N, N-Diethylaniline [UN2432] [Poison]
    • NS00003372
    • EN300-18282
    • N,N-Diethylaniline, purum, >=98.0% (GC)
    • N,N-Diethylaniline 100 microg/mL in Methanol
    • N,N-Diethylaniline, puriss. p.a., >=99.5%
    • Q1482984
    • Z57770738
    • F0001-2220

  • Applications

    N,N-Diethylaniline, CAS 91-66-7, is primarily used as an organic synthesis intermediate and colorant precursor. It serves as a building block for azo dyes and diarylide pigments, and as a precursor to various specialty chemicals including pharmaceutical intermediates. In coatings, inks, and pigment formulations, it is employed to introduce color and support dyeing/coloring processes. It may be used as a solvent or reaction medium in chemical manufacturing and research, depending on formulation and local regulations.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 241.43
    methanol 217.51
    isopropanol 177.51
    water 0.48
    ethyl acetate 411.75
    n-propanol 241.55
    acetone 425.84
    n-butanol 248.71
    acetonitrile 412.54
    DMF 434.53
    toluene 378.76
    isobutanol 205.8
    1,4-dioxane 874.54
    methyl acetate 397.14
    THF 932.58
    2-butanone 416.11
    n-pentanol 177.15
    sec-butanol 202.2
    n-hexane 263.43
    ethylene glycol 56.85
    NMP 732.14
    cyclohexane 534.48
    DMSO 638.11
    n-butyl acetate 639.79
    n-octanol 198.59
    chloroform 2171.01
    n-propyl acetate 303.56
    acetic acid 309.3
    dichloromethane 2543.65
    cyclohexanone 890.06
    propylene glycol 68.43
    isopropyl acetate 205.44
    DMAc 444.94
    2-ethoxyethanol 180.01
    isopentanol 193.82
    n-heptane 332.48
    ethyl formate 329.73
    1,2-dichloroethane 1277.75
    n-hexanol 391.14
    2-methoxyethanol 262.85
    isobutyl acetate 205.4
    tetrachloromethane 682.52
    n-pentyl acetate 285.53
    transcutol 542.08
    n-heptanol 174.0
    ethylbenzene 226.24
    MIBK 188.13
    2-propoxyethanol 342.95
    tert-butanol 232.8
    MTBE 289.02
    2-butoxyethanol 197.75
    propionic acid 280.95
    o-xylene 255.15
    formic acid 63.71
    diethyl ether 474.68
    m-xylene 217.38
    p-xylene 272.23
    chlorobenzene 654.07
    dimethyl carbonate 157.61
    n-octane 107.87
    formamide 95.24
    cyclopentanone 855.12
    2-pentanone 324.88
    anisole 309.62
    cyclopentyl methyl ether 517.94
    gamma-butyrolactone 960.82
    1-methoxy-2-propanol 187.21
    pyridine 754.73
    3-pentanone 389.29
    furfural 670.1
    n-dodecane 71.74
    diethylene glycol 195.08
    diisopropyl ether 151.78
    tert-amyl alcohol 220.86
    acetylacetone 319.29
    n-hexadecane 81.74
    acetophenone 297.39
    methyl propionate 353.91
    isopentyl acetate 429.75
    trichloroethylene 1830.6
    n-nonanol 167.66
    cyclohexanol 376.72
    benzyl alcohol 207.05
    2-ethylhexanol 325.11
    isooctanol 141.69
    dipropyl ether 559.95
    1,2-dichlorobenzene 639.16
    ethyl lactate 136.68
    propylene carbonate 589.08
    n-methylformamide 213.15
    2-pentanol 163.93
    n-pentane 193.57
    1-propoxy-2-propanol 307.64
    1-methoxy-2-propyl acetate 337.95
    2-(2-methoxypropoxy) propanol 220.86
    mesitylene 165.4
    ε-caprolactone 676.28
    p-cymene 237.31
    epichlorohydrin 920.74
    1,1,1-trichloroethane 1247.99
    2-aminoethanol 101.35
    morpholine-4-carbaldehyde 539.5
    sulfolane 1130.62
    2,2,4-trimethylpentane 82.58
    2-methyltetrahydrofuran 776.77
    n-hexyl acetate 391.54
    isooctane 55.09
    2-(2-butoxyethoxy)ethanol 260.69
    sec-butyl acetate 179.17
    tert-butyl acetate 222.48
    decalin 167.94
    glycerin 96.74
    diglyme 518.34
    acrylic acid 239.95
    isopropyl myristate 190.88
    n-butyric acid 379.0
    acetyl acetate 284.75
    di(2-ethylhexyl) phthalate 171.38
    ethyl propionate 283.49
    nitromethane 438.53
    1,2-diethoxyethane 456.11
    benzonitrile 395.67
    trioctyl phosphate 133.41
    1-bromopropane 846.88
    gamma-valerolactone 693.35
    n-decanol 132.45
    triethyl phosphate 230.71
    4-methyl-2-pentanol 96.05
    propionitrile 392.27
    vinylene carbonate 546.67
    1,1,2-trichlorotrifluoroethane 534.53
    DMS 310.42
    cumene 168.24
    2-octanol 132.48
    2-hexanone 301.58
    octyl acetate 224.67
    limonene 395.54
    1,2-dimethoxyethane 486.27
    ethyl orthosilicate 216.44
    tributyl phosphate 177.05
    diacetone alcohol 197.06
    N,N-dimethylaniline 231.31
    acrylonitrile 389.5
    aniline 317.05
    1,3-propanediol 139.15
    bromobenzene 840.94
    dibromomethane 1761.33
    1,1,2,2-tetrachloroethane 1507.51
    2-methyl-cyclohexyl acetate 352.26
    tetrabutyl urea 226.75
    diisobutyl methanol 177.2
    2-phenylethanol 261.93
    styrene 297.06
    dioctyl adipate 271.1
    dimethyl sulfate 254.48
    ethyl butyrate 468.34
    methyl lactate 133.55
    butyl lactate 188.78
    diethyl carbonate 329.42
    propanediol butyl ether 156.23
    triethyl orthoformate 322.74
    p-tert-butyltoluene 214.27
    methyl 4-tert-butylbenzoate 266.16
    morpholine 721.84
    tert-butylamine 207.18
    n-dodecanol 114.21
    dimethoxymethane 324.58
    ethylene carbonate 492.21
    cyrene 234.46
    2-ethoxyethyl acetate 309.97
    2-ethylhexyl acetate 411.32
    1,2,4-trichlorobenzene 675.26
    4-methylpyridine 620.64
    dibutyl ether 412.43
    2,6-dimethyl-4-heptanol 177.2
    DEF 407.23
    dimethyl isosorbide 472.15
    tetrachloroethylene 1148.99
    eugenol 222.67
    triacetin 313.0
    span 80 237.22
    1,4-butanediol 75.27
    1,1-dichloroethane 1052.73
    2-methyl-1-pentanol 169.9
    methyl formate 223.17
    2-methyl-1-butanol 212.38
    n-decane 117.08
    butyronitrile 412.84
    3,7-dimethyl-1-octanol 189.11
    1-chlorooctane 301.97
    1-chlorotetradecane 126.92
    n-nonane 134.8
    undecane 88.32
    tert-butylcyclohexane 132.86
    cyclooctane 183.76
    cyclopentanol 399.64
    tetrahydropyran 972.06
    tert-amyl methyl ether 248.54
    2,5,8-trioxanonane 402.16
    1-hexene 380.31
    2-isopropoxyethanol 148.83
    2,2,2-trifluoroethanol 116.14
    methyl butyrate 377.61

    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