2-Ethylpyrrole

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  • Identifiers

    CAS number
    1551-06-0

    Molecular formula
    C6H9N

    SMILES
    CCC1=CC=CN1

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Green 67.72%
    Nutty 57.8%
    Roasted 56.59%
    Earthy 55.67%
    Musty 45.63%
    Burnt 45.22%
    Animal 39.91%
    Vegetable 39.22%
    Fishy 37.19%
    Coffee 36.43%

     

    Flavor
    Green 67.58%
    Nutty 48.77%
    Fatty 38.32%
    Woody 35.97%
    Spicy 34.6%
    Earthy 33.32%
    Herbal 32.9%
    Sweet 32.43%
    Roasted 32.22%
    Floral 30.85%

     

    Odor impact est.
    High

  • Properties

    XLogP3-AA
    1.6

    pKa est.
    7.23 (neutral)

    Molecular weight
    95.14 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Very fast

    Boiling point est.
    160°C

    Flash point

    • 65.85 ˚C est.

  • Synonyms

    • 2-Ethylpyrrole
    • 1H-Pyrrole, 2-ethyl-
    • Pyrrole,2-ethyl-
    • DTXSID20165807
    • RefChem:87010
    • DTXCID6088298
    • 624-276-2
    • XRPDDDRNQJNHLQ-UHFFFAOYSA-N
    • 2-Ethyl-1H-pyrrole
    • 1551-06-0
    • MFCD00060477
    • 1H-Pyrrole,2-ethyl-
    • 2-Ethyl-1H-pyrrole #
    • SCHEMBL163556
    • SCHEMBL211077
    • SCHEMBL211078
    • SCHEMBL1037142
    • SCHEMBL1862910
    • SCHEMBL8192857
    • SCHEMBL17103326
    • SCHEMBL17103399
    • 2-Ethylpyrrole, analytical standard
    • AKOS006221861
    • 2-Ethylpyrrole, technical grade, 90%
    • SB62093
    • SY050397
    • DB-021052
    • CS-0198957
    • E0713
    • D90555
    • EN300-106331
    • F002567
    • Q24765696
    • 1551-06-0

  • Applications

    2-Ethylpyrrole (CAS 1551-06-0) is primarily employed as an organic synthesis intermediate to access pyrrole-containing compounds for pharmaceutical and agrochemical applications; it also serves as a precursor in the synthesis of dyes and pigments used in coatings and inks. It is also a starting point for pyrrole-based polymers designed for electronic materials and conducting polymers. In materials R&D, 2-Ethylpyrrole is often used as a component in specialty material systems and coating/adhesive formulations, supporting emerging applications in the chemical and materials industries.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 1891.67
    methanol 2634.53
    isopropanol 689.8
    water 5.74
    ethyl acetate 694.7
    n-propanol 977.15
    acetone 1043.95
    n-butanol 989.06
    acetonitrile 516.95
    DMF 849.64
    toluene 180.43
    isobutanol 557.07
    1,4-dioxane 826.7
    methyl acetate 515.69
    THF 1858.99
    2-butanone 687.98
    n-pentanol 693.71
    sec-butanol 523.24
    n-hexane 162.18
    ethylene glycol 237.57
    NMP 670.41
    cyclohexane 93.93
    DMSO 1067.63
    n-butyl acetate 711.98
    n-octanol 190.8
    chloroform 1387.22
    n-propyl acetate 329.73
    acetic acid 907.53
    dichloromethane 1184.73
    cyclohexanone 691.71
    propylene glycol 255.16
    isopropyl acetate 315.21
    DMAc 549.8
    2-ethoxyethanol 645.8
    isopentanol 661.75
    n-heptane 119.73
    ethyl formate 483.69
    1,2-dichloroethane 567.9
    n-hexanol 776.19
    2-methoxyethanol 1163.01
    isobutyl acetate 201.66
    tetrachloromethane 257.31
    n-pentyl acetate 268.23
    transcutol 1292.67
    n-heptanol 236.92
    ethylbenzene 57.82
    MIBK 281.22
    2-propoxyethanol 954.99
    tert-butanol 562.06
    MTBE 504.5
    2-butoxyethanol 381.25
    propionic acid 559.9
    o-xylene 86.24
    formic acid 460.89
    diethyl ether 949.28
    m-xylene 107.2
    p-xylene 82.27
    chlorobenzene 282.83
    dimethyl carbonate 149.66
    n-octane 35.12
    formamide 453.85
    cyclopentanone 897.82
    2-pentanone 663.77
    anisole 173.95
    cyclopentyl methyl ether 607.58
    gamma-butyrolactone 871.24
    1-methoxy-2-propanol 630.55
    pyridine 589.84
    3-pentanone 397.39
    furfural 568.44
    n-dodecane 23.34
    diethylene glycol 560.87
    diisopropyl ether 178.43
    tert-amyl alcohol 443.42
    acetylacetone 472.85
    n-hexadecane 24.77
    acetophenone 144.19
    methyl propionate 476.91
    isopentyl acetate 421.09
    trichloroethylene 831.77
    n-nonanol 164.8
    cyclohexanol 366.49
    benzyl alcohol 183.37
    2-ethylhexanol 349.82
    isooctanol 175.41
    dipropyl ether 503.45
    1,2-dichlorobenzene 184.24
    ethyl lactate 105.56
    propylene carbonate 399.41
    n-methylformamide 610.53
    2-pentanol 481.67
    n-pentane 166.33
    1-propoxy-2-propanol 600.73
    1-methoxy-2-propyl acetate 362.05
    2-(2-methoxypropoxy) propanol 230.77
    mesitylene 63.84
    ε-caprolactone 517.48
    p-cymene 71.54
    epichlorohydrin 870.88
    1,1,1-trichloroethane 476.95
    2-aminoethanol 502.29
    morpholine-4-carbaldehyde 603.89
    sulfolane 684.62
    2,2,4-trimethylpentane 56.66
    2-methyltetrahydrofuran 1041.06
    n-hexyl acetate 293.72
    isooctane 47.14
    2-(2-butoxyethoxy)ethanol 374.15
    sec-butyl acetate 172.43
    tert-butyl acetate 259.91
    decalin 38.79
    glycerin 310.08
    diglyme 559.18
    acrylic acid 396.35
    isopropyl myristate 107.77
    n-butyric acid 867.12
    acetyl acetate 292.0
    di(2-ethylhexyl) phthalate 100.86
    ethyl propionate 214.3
    nitromethane 888.95
    1,2-diethoxyethane 694.1
    benzonitrile 234.78
    trioctyl phosphate 77.81
    1-bromopropane 566.07
    gamma-valerolactone 831.6
    n-decanol 125.95
    triethyl phosphate 90.93
    4-methyl-2-pentanol 234.13
    propionitrile 472.41
    vinylene carbonate 329.76
    1,1,2-trichlorotrifluoroethane 432.49
    DMS 156.09
    cumene 52.55
    2-octanol 140.06
    2-hexanone 398.95
    octyl acetate 146.79
    limonene 136.42
    1,2-dimethoxyethane 762.06
    ethyl orthosilicate 104.01
    tributyl phosphate 105.07
    diacetone alcohol 270.3
    N,N-dimethylaniline 111.68
    acrylonitrile 440.27
    aniline 298.28
    1,3-propanediol 671.61
    bromobenzene 262.03
    dibromomethane 855.07
    1,1,2,2-tetrachloroethane 563.94
    2-methyl-cyclohexyl acetate 170.08
    tetrabutyl urea 129.38
    diisobutyl methanol 147.53
    2-phenylethanol 244.74
    styrene 91.45
    dioctyl adipate 120.58
    dimethyl sulfate 175.43
    ethyl butyrate 321.46
    methyl lactate 158.37
    butyl lactate 165.34
    diethyl carbonate 148.71
    propanediol butyl ether 246.68
    triethyl orthoformate 186.47
    p-tert-butyltoluene 71.96
    methyl 4-tert-butylbenzoate 131.73
    morpholine 993.85
    tert-butylamine 410.84
    n-dodecanol 98.99
    dimethoxymethane 714.02
    ethylene carbonate 304.08
    cyrene 169.99
    2-ethoxyethyl acetate 329.08
    2-ethylhexyl acetate 335.19
    1,2,4-trichlorobenzene 204.28
    4-methylpyridine 531.72
    dibutyl ether 306.39
    2,6-dimethyl-4-heptanol 147.53
    DEF 581.75
    dimethyl isosorbide 317.4
    tetrachloroethylene 464.92
    eugenol 152.59
    triacetin 167.27
    span 80 220.56
    1,4-butanediol 294.75
    1,1-dichloroethane 665.33
    2-methyl-1-pentanol 522.03
    methyl formate 386.38
    2-methyl-1-butanol 585.36
    n-decane 38.83
    butyronitrile 667.07
    3,7-dimethyl-1-octanol 204.66
    1-chlorooctane 121.12
    1-chlorotetradecane 51.53
    n-nonane 40.8
    undecane 28.56
    tert-butylcyclohexane 48.68
    cyclooctane 32.91
    cyclopentanol 490.28
    tetrahydropyran 935.17
    tert-amyl methyl ether 340.84
    2,5,8-trioxanonane 366.56
    1-hexene 417.02
    2-isopropoxyethanol 381.81
    2,2,2-trifluoroethanol 199.35
    methyl butyrate 336.71

    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