Tetraethylammonium Bromide

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  • Identifiers

    CAS number
    71-91-0

    Molecular formula
    C8H20BrN

    SMILES
    CC[N+](CC)(CC)CC.[Br-]

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Sweet 30.87%
    Fresh 30.73%
    Ethereal 30.55%
    Fruity 29.5%
    Musty 29.46%
    Mint 29.19%
    Woody 27.57%
    Camphoreous 27.2%
    Fermented 26.9%
    Solvent 26.25%

     

    Flavor
    Green 21.32%
    Bloody 21.04%
    Leathery 20.91%
    Glue 20.81%
    Skunky 20.71%
    Violet-leaf 20.58%
    Sulfurous 20.4%
    Delicate 20.29%
    Yeasty 20.09%
    Catty 19.81%

     

    Odor impact est.
    High

  • Properties

    pKa est.
    8.41 (weak base)

    Molecular weight
    210.16 g/mol

    Flash point

    • 53.72 ˚C est.

  • Synonyms

    • TETRAETHYLAMMONIUM BROMIDE
    • 71-91-0
    • TEAB
    • Sympatektoman
    • Tetrylammonium bromide
    • TEA bromide
    • Bromethyl
    • Tetranium
    • Beparon
    • Etambro
    • Etamon
    • Ethylon
    • Etylon
    • Teamon
    • Tetraethyl ammonium bromide
    • tetraethylazanium bromide
    • Ethanaminium, N,N,N-triethyl-, bromide
    • USAF DO-32
    • Tetrylammonium bromide [INN]
    • Bromuro de tetrilamonio
    • TMD 10
    • tetraethylazanium;bromide
    • Bromure de tetrylammonium
    • Tetrylammonii bromidum [INN-Latin]
    • EINECS 200-769-4
    • NSC 36724
    • Bromuro de tetrilamonio [INN-Spanish]
    • Bromure de tetrylammonium [INN-French]
    • Ammonium, tetraethyl-, bromide
    • DTXSID9044457
    • AI3-19150
    • UNII-0435621Z3N
    • NSC-36724
    • Tetraethylammonium (bromide)
    • TMD-10
    • 0435621Z3N
    • DTXCID7024457
    • Ethanaminium, N,N,N-triethyl-, bromide (1:1)
    • MFCD00011825
    • TETRAETHYLAMMONIUM BROMIDE [MI]
    • Bromide, Tetraethylammonium
    • Tetrylammonii bromidum (INN-Latin)
    • Bromuro de tetrilamonio (INN-Spanish)
    • Bromure de tetrylammonium (INN-French)
    • EthanaminiumN,N,N-triethyl Bromide
    • Tetrylammonii bromidum
    • tetraethylammoniumbromide
    • C8H20BrN
    • Bromure de tetraethylammonium [French]
    • Bromure de tetraethylammonium
    • Et4NBr
    • tAtrylammonium (cation)
    • SCHEMBL863
    • Ammonium, tetraethyl, bromide
    • CHEMBL324254
    • BCP24454
    • NSC36724
    • STR02843
    • Ethanaminium,N,N-triethyl-, bromide
    • Tox21_302138
    • WLN: 2K2&2&2 &E
    • Ethanaminium, N,N,Ntriethyl, bromide
    • AKOS015907861
    • CS-W015124
    • HY-W014408
    • CAS-71-91-0
    • NCGC00255901-01
    • N,N,NTriethylethanaminium bromide (1:1)
    • Tetraethylammonium bromide [N2,2,2,2]Br
    • DB-050388
    • NS00078937
    • T0094
    • EN300-67151
    • D78249
    • A837355
    • Q5961420
    • Tetraethylammonium bromide(for ion pair chromatography)
    • F0001-1833

  • Applications

    Tetraethylammonium bromide (CAS 71-91-0) is a quaternary ammonium salt commonly used as a phase-transfer catalyst in organic synthesis to promote reactions across aqueous and organic phases, such as alkylations and condensations. It also serves as a synthetic intermediate and a source of the tetraethylammonium cation for preparing other ammonium salts and related ionic liquids. In laboratory and industrial settings, it can function as a supporting electrolyte or conducting salt in electrochemical processes and measurements. In polymer chemistry and coatings research, it is occasionally used as a counterion or dopant to tune ionic strength and processing properties. Use is subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 188.66
    methanol 190.08
    isopropanol 149.29
    water 0.48
    ethyl acetate 382.9
    n-propanol 246.55
    acetone 221.76
    n-butanol 275.64
    acetonitrile 210.24
    DMF 190.9
    toluene 377.2
    isobutanol 199.67
    1,4-dioxane 746.28
    methyl acetate 306.95
    THF 1004.58
    2-butanone 339.49
    n-pentanol 188.0
    sec-butanol 240.9
    n-hexane 397.68
    ethylene glycol 31.84
    NMP 601.36
    cyclohexane 929.81
    DMSO 233.71
    n-butyl acetate 703.66
    n-octanol 176.93
    chloroform 1677.41
    n-propyl acetate 277.6
    acetic acid 278.12
    dichloromethane 1341.61
    cyclohexanone 832.4
    propylene glycol 50.02
    isopropyl acetate 245.68
    DMAc 267.64
    2-ethoxyethanol 191.52
    isopentanol 223.5
    n-heptane 558.78
    ethyl formate 229.64
    1,2-dichloroethane 732.13
    n-hexanol 412.72
    2-methoxyethanol 254.46
    isobutyl acetate 200.17
    tetrachloromethane 731.5
    n-pentyl acetate 365.45
    transcutol 554.17
    n-heptanol 196.22
    ethylbenzene 214.59
    MIBK 162.22
    2-propoxyethanol 387.83
    tert-butanol 230.77
    MTBE 410.22
    2-butoxyethanol 237.29
    propionic acid 240.3
    o-xylene 284.97
    formic acid 65.81
    diethyl ether 528.16
    m-xylene 218.37
    p-xylene 288.05
    chlorobenzene 524.66
    dimethyl carbonate 74.22
    n-octane 146.98
    formamide 77.59
    cyclopentanone 687.69
    2-pentanone 269.0
    anisole 247.68
    cyclopentyl methyl ether 672.03
    gamma-butyrolactone 731.36
    1-methoxy-2-propanol 174.88
    pyridine 645.47
    3-pentanone 315.02
    furfural 607.42
    n-dodecane 75.46
    diethylene glycol 170.56
    diisopropyl ether 204.2
    tert-amyl alcohol 316.95
    acetylacetone 221.81
    n-hexadecane 86.65
    acetophenone 218.8
    methyl propionate 242.81
    isopentyl acetate 571.61
    trichloroethylene 1170.5
    n-nonanol 170.51
    cyclohexanol 493.32
    benzyl alcohol 175.88
    2-ethylhexanol 421.48
    isooctanol 164.27
    dipropyl ether 661.85
    1,2-dichlorobenzene 519.78
    ethyl lactate 108.7
    propylene carbonate 439.36
    n-methylformamide 138.07
    2-pentanol 209.07
    n-pentane 306.34
    1-propoxy-2-propanol 379.08
    1-methoxy-2-propyl acetate 386.16
    2-(2-methoxypropoxy) propanol 219.55
    mesitylene 172.82
    ε-caprolactone 742.11
    p-cymene 306.6
    epichlorohydrin 719.56
    1,1,1-trichloroethane 971.28
    2-aminoethanol 85.62
    morpholine-4-carbaldehyde 443.16
    sulfolane 822.2
    2,2,4-trimethylpentane 153.02
    2-methyltetrahydrofuran 1055.1
    n-hexyl acetate 395.34
    isooctane 82.8
    2-(2-butoxyethoxy)ethanol 248.71
    sec-butyl acetate 229.95
    tert-butyl acetate 275.73
    decalin 267.69
    glycerin 70.21
    diglyme 489.16
    acrylic acid 186.83
    isopropyl myristate 190.76
    n-butyric acid 403.38
    acetyl acetate 274.51
    di(2-ethylhexyl) phthalate 152.02
    ethyl propionate 257.82
    nitromethane 275.45
    1,2-diethoxyethane 518.93
    benzonitrile 313.37
    trioctyl phosphate 123.56
    1-bromopropane 717.32
    gamma-valerolactone 683.54
    n-decanol 129.21
    triethyl phosphate 268.99
    4-methyl-2-pentanol 119.61
    propionitrile 290.82
    vinylene carbonate 368.53
    1,1,2-trichlorotrifluoroethane 478.33
    DMS 240.45
    cumene 173.49
    2-octanol 159.77
    2-hexanone 258.44
    octyl acetate 205.23
    limonene 594.52
    1,2-dimethoxyethane 400.35
    ethyl orthosilicate 305.96
    tributyl phosphate 170.0
    diacetone alcohol 184.73
    N,N-dimethylaniline 187.7
    acrylonitrile 252.56
    aniline 343.4
    1,3-propanediol 125.86
    bromobenzene 637.05
    dibromomethane 1074.88
    1,1,2,2-tetrachloroethane 1073.0
    2-methyl-cyclohexyl acetate 438.69
    tetrabutyl urea 190.19
    diisobutyl methanol 239.92
    2-phenylethanol 283.42
    styrene 247.33
    dioctyl adipate 241.35
    dimethyl sulfate 128.3
    ethyl butyrate 494.74
    methyl lactate 95.22
    butyl lactate 209.08
    diethyl carbonate 305.0
    propanediol butyl ether 139.73
    triethyl orthoformate 448.17
    p-tert-butyltoluene 312.93
    methyl 4-tert-butylbenzoate 244.61
    morpholine 694.02
    tert-butylamine 247.09
    n-dodecanol 107.66
    dimethoxymethane 170.57
    ethylene carbonate 345.94
    cyrene 188.72
    2-ethoxyethyl acetate 340.3
    2-ethylhexyl acetate 616.8
    1,2,4-trichlorobenzene 599.67
    4-methylpyridine 530.74
    dibutyl ether 419.06
    2,6-dimethyl-4-heptanol 239.92
    DEF 324.96
    dimethyl isosorbide 494.98
    tetrachloroethylene 954.88
    eugenol 188.23
    triacetin 278.61
    span 80 241.03
    1,4-butanediol 60.24
    1,1-dichloroethane 694.95
    2-methyl-1-pentanol 189.82
    methyl formate 115.92
    2-methyl-1-butanol 262.78
    n-decane 135.93
    butyronitrile 314.89
    3,7-dimethyl-1-octanol 226.24
    1-chlorooctane 274.77
    1-chlorotetradecane 125.15
    n-nonane 150.17
    undecane 94.87
    tert-butylcyclohexane 225.6
    cyclooctane 328.43
    cyclopentanol 437.66
    tetrahydropyran 1056.73
    tert-amyl methyl ether 406.98
    2,5,8-trioxanonane 341.8
    1-hexene 462.73
    2-isopropoxyethanol 165.58
    2,2,2-trifluoroethanol 106.96
    methyl butyrate 301.94

    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