2-Vinylthiophene

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  • Identifiers

    CAS number
    1918-82-7

    Molecular formula
    C6H6S

    SMILES
    C=CC1=CC=CS1

    Safety labels

    Flammable
    Flammable

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Sulfurous 53.88%
    Pungent 47.19%
    Nutty 43.38%
    Alliaceous 41.12%
    Garlic 40.16%
    Spicy 40.04%
    Burnt 39.46%
    Onion 38.11%
    Roasted 34.64%
    Almond 34.11%

     

    Flavor
    Sulfur 46.71%
    Garlic 45.12%
    Sulfurous 44.68%
    Horseradish 39.76%
    Onion 38.13%
    Alliaceous 33.41%
    Pungent 33.21%
    Nutty 32.48%
    Mustard 30.1%
    Roasted 28.75%

     

    Odor impact est.
    High

  • Properties

    XLogP3-AA
    2.5

    pKa est.
    7.22 (neutral)

    Molecular weight
    110.18 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra fast

    Boiling point est.
    146°C

    Flash point

    • 23.3 ˚C est.

  • Synonyms

    • 2-Vinylthiophene
    • 1918-82-7
    • 2-ethenylthiophene
    • DTXSID50334100
    • RefChem:483861
    • DTXCID20285190
    • 851-174-7
    • Thiophene, 2-ethenyl-
    • MFCD00085296
    • Thiophene, ethenyl-
    • 2-viniylthiophene
    • 2-vinyl-thiophene
    • 2-Vinylthiophene (Stabilized with BHT)
    • vinyl thiophene
    • 2-vinyl thiophene
    • 2-Vinylthiophene #
    • 2-Ethenylthiophene, 9CI
    • SCHEMBL36752
    • SCHEMBL55038
    • SCHEMBL83410
    • SCHEMBL207202
    • SCHEMBL207203
    • SCHEMBL499653
    • AS352FNL65
    • SCHEMBL2384743
    • SCHEMBL2386237
    • SCHEMBL4449693
    • SCHEMBL12304091
    • SCHEMBL15161767
    • BAA91882
    • LT0128
    • AKOS005064376
    • CS-W021748
    • DS-16733
    • SY024253
    • EN300-152599
    • A880349
    • F445903
    • F1967-3023
    • 1918-82-7

  • Applications

    2-Vinylthiophene (CAS 1918-82-7) is primarily used as a monomer or comonomer for thiophene-based polymers and conducting polymer systems, enabling the synthesis of vinyl-functional polythiophene derivatives for electronic materials. It also finds use in functional coatings and inks to impart electrical conductivity or electrochromic properties. As a synthetic intermediate, it allows introduction of the vinyl group onto thiophene rings to create new monomers and crosslinked materials for advanced polymer systems and thiophene-based sensors. Additionally, it is commonly employed in research and development in polymer science and materials chemistry to explore structure–property relationships and to develop specialty polymers and sensors.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 143.83
    methanol 114.09
    isopropanol 102.01
    water 0.22
    ethyl acetate 294.83
    n-propanol 135.3
    acetone 243.2
    n-butanol 153.47
    acetonitrile 153.03
    DMF 236.03
    toluene 299.43
    isobutanol 94.93
    1,4-dioxane 636.76
    methyl acetate 229.5
    THF 688.42
    2-butanone 265.05
    n-pentanol 146.28
    sec-butanol 121.61
    n-hexane 70.91
    ethylene glycol 22.6
    NMP 357.24
    cyclohexane 106.46
    DMSO 293.04
    n-butyl acetate 374.94
    n-octanol 100.32
    chloroform 616.62
    n-propyl acetate 227.1
    acetic acid 122.87
    dichloromethane 534.55
    cyclohexanone 449.82
    propylene glycol 32.38
    isopropyl acetate 203.53
    DMAc 246.41
    2-ethoxyethanol 200.96
    isopentanol 136.71
    n-heptane 103.48
    ethyl formate 136.44
    1,2-dichloroethane 344.93
    n-hexanol 213.96
    2-methoxyethanol 222.45
    isobutyl acetate 159.53
    tetrachloromethane 139.62
    n-pentyl acetate 174.98
    transcutol 849.24
    n-heptanol 95.72
    ethylbenzene 117.96
    MIBK 202.23
    2-propoxyethanol 312.1
    tert-butanol 143.7
    MTBE 241.72
    2-butoxyethanol 156.71
    propionic acid 104.92
    o-xylene 140.86
    formic acid 30.82
    diethyl ether 383.55
    m-xylene 164.38
    p-xylene 126.93
    chlorobenzene 295.38
    dimethyl carbonate 95.92
    n-octane 33.69
    formamide 61.6
    cyclopentanone 438.9
    2-pentanone 271.13
    anisole 278.49
    cyclopentyl methyl ether 376.94
    gamma-butyrolactone 374.05
    1-methoxy-2-propanol 193.61
    pyridine 454.55
    3-pentanone 216.0
    furfural 402.13
    n-dodecane 23.77
    diethylene glycol 152.38
    diisopropyl ether 148.13
    tert-amyl alcohol 145.31
    acetylacetone 313.31
    n-hexadecane 27.56
    acetophenone 219.44
    methyl propionate 181.14
    isopentyl acetate 277.37
    trichloroethylene 592.97
    n-nonanol 102.65
    cyclohexanol 162.1
    benzyl alcohol 152.82
    2-ethylhexanol 167.82
    isooctanol 87.51
    dipropyl ether 340.61
    1,2-dichlorobenzene 249.49
    ethyl lactate 74.48
    propylene carbonate 216.12
    n-methylformamide 105.52
    2-pentanol 132.6
    n-pentane 70.56
    1-propoxy-2-propanol 267.19
    1-methoxy-2-propyl acetate 334.04
    2-(2-methoxypropoxy) propanol 232.65
    mesitylene 115.76
    ε-caprolactone 359.57
    p-cymene 112.36
    epichlorohydrin 490.47
    1,1,1-trichloroethane 376.53
    2-aminoethanol 51.57
    morpholine-4-carbaldehyde 458.02
    sulfolane 410.12
    2,2,4-trimethylpentane 38.08
    2-methyltetrahydrofuran 511.38
    n-hexyl acetate 218.15
    isooctane 38.8
    2-(2-butoxyethoxy)ethanol 286.58
    sec-butyl acetate 170.24
    tert-butyl acetate 255.45
    decalin 60.09
    glycerin 50.44
    diglyme 535.11
    acrylic acid 87.21
    isopropyl myristate 127.55
    n-butyric acid 177.76
    acetyl acetate 203.4
    di(2-ethylhexyl) phthalate 97.15
    ethyl propionate 179.27
    nitromethane 220.47
    1,2-diethoxyethane 494.62
    benzonitrile 218.49
    trioctyl phosphate 69.02
    1-bromopropane 277.45
    gamma-valerolactone 531.92
    n-decanol 81.98
    triethyl phosphate 111.48
    4-methyl-2-pentanol 94.07
    propionitrile 147.43
    vinylene carbonate 214.97
    1,1,2-trichlorotrifluoroethane 250.33
    DMS 179.05
    cumene 88.87
    2-octanol 72.61
    2-hexanone 252.06
    octyl acetate 137.59
    limonene 178.47
    1,2-dimethoxyethane 394.6
    ethyl orthosilicate 119.83
    tributyl phosphate 90.32
    diacetone alcohol 210.46
    N,N-dimethylaniline 174.78
    acrylonitrile 148.22
    aniline 204.98
    1,3-propanediol 89.43
    bromobenzene 331.16
    dibromomethane 392.1
    1,1,2,2-tetrachloroethane 423.34
    2-methyl-cyclohexyl acetate 200.73
    tetrabutyl urea 117.33
    diisobutyl methanol 119.36
    2-phenylethanol 196.79
    styrene 171.07
    dioctyl adipate 155.11
    dimethyl sulfate 138.2
    ethyl butyrate 269.43
    methyl lactate 77.13
    butyl lactate 97.12
    diethyl carbonate 152.47
    propanediol butyl ether 108.13
    triethyl orthoformate 193.62
    p-tert-butyltoluene 111.51
    methyl 4-tert-butylbenzoate 181.55
    morpholine 518.94
    tert-butylamine 114.15
    n-dodecanol 70.06
    dimethoxymethane 275.92
    ethylene carbonate 186.2
    cyrene 195.68
    2-ethoxyethyl acetate 256.33
    2-ethylhexyl acetate 255.97
    1,2,4-trichlorobenzene 284.45
    4-methylpyridine 422.74
    dibutyl ether 225.86
    2,6-dimethyl-4-heptanol 119.36
    DEF 281.83
    dimethyl isosorbide 435.15
    tetrachloroethylene 296.38
    eugenol 179.01
    triacetin 208.19
    span 80 188.82
    1,4-butanediol 45.48
    1,1-dichloroethane 326.59
    2-methyl-1-pentanol 144.23
    methyl formate 82.9
    2-methyl-1-butanol 126.22
    n-decane 37.41
    butyronitrile 191.0
    3,7-dimethyl-1-octanol 125.79
    1-chlorooctane 110.55
    1-chlorotetradecane 56.51
    n-nonane 36.98
    undecane 28.5
    tert-butylcyclohexane 56.68
    cyclooctane 56.87
    cyclopentanol 147.07
    tetrahydropyran 529.15
    tert-amyl methyl ether 205.92
    2,5,8-trioxanonane 438.48
    1-hexene 163.73
    2-isopropoxyethanol 170.95
    2,2,2-trifluoroethanol 49.07
    methyl butyrate 211.13

    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