Cyclooctene

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  • Identifiers

    CAS number
    931-87-3

    Molecular formula
    C8H14

    SMILES
    C1CCC/C=C\CC1

    Safety labels

    Flammable
    Flammable

    Health Hazard
    Health

  • Odor profile

    Fragrance
    Sweet 47.69%
    Musk 41.59%
    Citrus 40.31%
    Dry 34.66%
    Gassy 28.68%
    Amber 24.07%
    Animal 20.09%
    Waxy 20.04%
    Powdery 18.82%
    Lemon 18.2%

     

    Flavor
    Ammoniacal 25.73%
    Animal 24.81%
    Shrimp 20.14%
    Alkaline 19.06%
    Tarry 17.79%
    Tar 17.57%
    Rotten 17.49%
    Terpentine 17.03%
    Beet 16.91%
    Terpenic 16.68%

     

    Odor impact est.
    High

  • Properties

    XLogP3-AA
    3.5

    pKa est.
    9.3 (weak base)

    Molecular weight
    110.2 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra fast

    Boiling point est.
    140°C

    Flash point

    • 33.52 ˚C est.

  • Synonyms

    • CYCLOOCTENE
    • cis-Cyclooctene
    • 931-87-3
    • (Z)-Cyclooctene
    • 931-88-4
    • cyclooctene, (1Z)-
    • Cyclooctene, (Z)-
    • (1Z)-cyclooctene
    • NSC 72425
    • 931-89-5
    • MFCD00001753
    • AE340T3540
    • 1-Cyclooctene #
    • UNII-AE340T3540
    • (7Z)-cyclooctene
    • NSC72425
    • EINECS 213-243-4
    • EINECS 213-245-5
    • AI3-26693
    • EC 213-243-4
    • CHEMBL30773
    • Cyclooctene, analytical standard
    • DTXSID20883615
    • CHEBI:225365
    • CHEBI:229204
    • NSC-72425
    • AKOS000121281
    • BS-23512
    • Cyclooctene 100 microg/mL in Acetonitrile
    • DB-246774
    • C0506
    • EN300-21667
    • EN300-304057
    • Q415390
    • cis-Cyclooctene, 95%, stab. with IRGANOX 1076
    • cis-Cyclooctene, contains 100-200 ppm Irganox 1076 FD as antioxidant, 95%
    • 25267-51-0

  • Applications

    Cyclooctene (CAS 931-87-3) is primarily used as a monomer for ring-opening metathesis polymerization (ROMP) to produce polycyclooctene and related elastomeric or crosslinked polymers for specialty coatings and advanced materials; it also serves as a reactive building block in coatings, inks, and adhesives where its carbon-carbon double bond enables copolymerization or crosslinking; in organic synthesis it is used as a versatile building block to access bicyclic derivatives for pharmaceutical and agrochemical research; it may be employed as a niche solvent or reaction medium in specialized formulations and laboratory-scale processes due to its nonpolar character; overall, cyclooctene is evaluated as a precursor for functional materials and process intermediates in the polymer and advanced materials industries.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 313.44
    methanol 236.76
    isopropanol 250.11
    water 0.03
    ethyl acetate 880.96
    n-propanol 341.12
    acetone 656.0
    n-butanol 418.25
    acetonitrile 400.08
    DMF 422.83
    toluene 928.68
    isobutanol 248.09
    1,4-dioxane 1293.71
    methyl acetate 480.15
    THF 2508.34
    2-butanone 666.04
    n-pentanol 296.93
    sec-butanol 335.36
    n-hexane 914.52
    ethylene glycol 28.68
    NMP 712.17
    cyclohexane 1596.45
    DMSO 655.93
    n-butyl acetate 1816.72
    n-octanol 232.33
    chloroform 2181.07
    n-propyl acetate 607.11
    acetic acid 253.07
    dichloromethane 1938.98
    cyclohexanone 1314.35
    propylene glycol 52.31
    isopropyl acetate 586.3
    DMAc 319.07
    2-ethoxyethanol 285.22
    isopentanol 357.72
    n-heptane 1339.53
    ethyl formate 298.82
    1,2-dichloroethane 1301.32
    n-hexanol 749.28
    2-methoxyethanol 395.38
    isobutyl acetate 413.63
    tetrachloromethane 645.88
    n-pentyl acetate 564.01
    transcutol 1504.73
    n-heptanol 242.73
    ethylbenzene 359.89
    MIBK 485.16
    2-propoxyethanol 718.24
    tert-butanol 391.35
    MTBE 754.31
    2-butoxyethanol 315.5
    propionic acid 267.41
    o-xylene 411.6
    formic acid 32.88
    diethyl ether 1640.43
    m-xylene 451.04
    p-xylene 399.52
    chlorobenzene 819.98
    dimethyl carbonate 132.57
    n-octane 290.28
    formamide 51.74
    cyclopentanone 1263.49
    2-pentanone 790.88
    anisole 426.29
    cyclopentyl methyl ether 1521.65
    gamma-butyrolactone 1078.97
    1-methoxy-2-propanol 351.39
    pyridine 1230.54
    3-pentanone 653.02
    furfural 752.17
    n-dodecane 126.48
    diethylene glycol 250.68
    diisopropyl ether 548.14
    tert-amyl alcohol 384.09
    acetylacetone 624.16
    n-hexadecane 147.68
    acetophenone 325.41
    methyl propionate 463.09
    isopentyl acetate 1126.59
    trichloroethylene 1730.86
    n-nonanol 233.62
    cyclohexanol 578.01
    benzyl alcohol 227.52
    2-ethylhexanol 720.63
    isooctanol 220.76
    dipropyl ether 2105.58
    1,2-dichlorobenzene 628.32
    ethyl lactate 133.24
    propylene carbonate 661.7
    n-methylformamide 164.79
    2-pentanol 377.96
    n-pentane 704.31
    1-propoxy-2-propanol 778.53
    1-methoxy-2-propyl acetate 798.87
    2-(2-methoxypropoxy) propanol 305.53
    mesitylene 304.0
    ε-caprolactone 991.82
    p-cymene 390.93
    epichlorohydrin 1209.0
    1,1,1-trichloroethane 1431.61
    2-aminoethanol 79.75
    morpholine-4-carbaldehyde 665.72
    sulfolane 1081.24
    2,2,4-trimethylpentane 180.5
    2-methyltetrahydrofuran 2038.35
    n-hexyl acetate 603.72
    isooctane 182.0
    2-(2-butoxyethoxy)ethanol 473.19
    sec-butyl acetate 435.14
    tert-butyl acetate 605.78
    decalin 356.3
    glycerin 69.83
    diglyme 907.83
    acrylic acid 182.24
    isopropyl myristate 303.64
    n-butyric acid 545.93
    acetyl acetate 490.53
    di(2-ethylhexyl) phthalate 169.35
    ethyl propionate 510.62
    nitromethane 382.17
    1,2-diethoxyethane 1543.96
    benzonitrile 470.32
    trioctyl phosphate 145.55
    1-bromopropane 1728.93
    gamma-valerolactone 1036.66
    n-decanol 191.81
    triethyl phosphate 294.71
    4-methyl-2-pentanol 228.47
    propionitrile 513.6
    vinylene carbonate 480.42
    1,1,2-trichlorotrifluoroethane 513.73
    DMS 313.28
    cumene 211.59
    2-octanol 185.9
    2-hexanone 648.83
    octyl acetate 315.55
    limonene 850.14
    1,2-dimethoxyethane 821.49
    ethyl orthosilicate 333.27
    tributyl phosphate 219.2
    diacetone alcohol 371.3
    N,N-dimethylaniline 274.27
    acrylonitrile 401.48
    aniline 495.63
    1,3-propanediol 139.75
    bromobenzene 1069.53
    dibromomethane 1755.99
    1,1,2,2-tetrachloroethane 1400.86
    2-methyl-cyclohexyl acetate 562.93
    tetrabutyl urea 271.45
    diisobutyl methanol 454.36
    2-phenylethanol 390.24
    styrene 476.09
    dioctyl adipate 324.6
    dimethyl sulfate 178.57
    ethyl butyrate 1151.81
    methyl lactate 120.27
    butyl lactate 241.52
    diethyl carbonate 529.62
    propanediol butyl ether 193.39
    triethyl orthoformate 698.4
    p-tert-butyltoluene 369.13
    methyl 4-tert-butylbenzoate 272.76
    morpholine 1260.47
    tert-butylamine 401.79
    n-dodecanol 168.68
    dimethoxymethane 522.47
    ethylene carbonate 467.45
    cyrene 214.04
    2-ethoxyethyl acetate 556.53
    2-ethylhexyl acetate 1078.97
    1,2,4-trichlorobenzene 637.77
    4-methylpyridine 1019.31
    dibutyl ether 1139.36
    2,6-dimethyl-4-heptanol 454.36
    DEF 722.91
    dimethyl isosorbide 647.77
    tetrachloroethylene 1054.96
    eugenol 214.31
    triacetin 365.93
    span 80 345.01
    1,4-butanediol 53.04
    1,1-dichloroethane 1233.52
    2-methyl-1-pentanol 285.93
    methyl formate 129.94
    2-methyl-1-butanol 334.51
    n-decane 241.6
    butyronitrile 671.57
    3,7-dimethyl-1-octanol 353.41
    1-chlorooctane 458.95
    1-chlorotetradecane 191.15
    n-nonane 289.18
    undecane 163.44
    tert-butylcyclohexane 275.37
    cyclooctane 644.62
    cyclopentanol 474.21
    tetrahydropyran 2182.9
    tert-amyl methyl ether 604.76
    2,5,8-trioxanonane 594.97
    1-hexene 1257.64
    2-isopropoxyethanol 241.76
    2,2,2-trifluoroethanol 60.18
    methyl butyrate 597.0

    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