Dicyclopentadiene

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  • Identifiers

    CAS number
    77-73-6

    Molecular formula
    C10H12

    SMILES
    C1C=CC2C1C3CC2C=C3

    Safety labels

    Flammable
    Flammable

    Irritant
    Irritant

    Environmental Hazard
    Environmental

  • Odor profile

    Fragrance
    Green 54.9%
    Fruity 49.19%
    Sweet 47.41%
    Herbal 41.41%
    Woody 38.05%
    Fresh 37.15%
    Spicy 31.29%
    Oily 27.66%
    Floral 27.45%
    Citrus 25.09%

     

    Flavor
    Bitter 28.36%
    Animal 26.89%
    Alkaline 21.03%
    Shrimp 20.51%
    Rotten 18.54%
    Cereal 18.44%
    Indole 18.34%
    Moth ball 18.21%
    Oriental 18.11%
    Terpentine 18.09%

     

    Odor impact est.
    High

    Odor threshold

    • Odor Threshold Low: 0.003 [mmHg]. Odor Threshold High: 0.01 [mmHg]. Detection odor threshold from AIHA (mean = 0.011 ppm)
    • Human sensory response studies indicate that dicyclopentadiene can be detected in the range of 0.003 to 0.2 ppm ...
    • The odor threshold was reported as low as 0.003 ppm.
    • 0.016 mg/cu m
    • It has a disagreeable, camphor-like odor that is detectable at less than 0.003 ppm but does not become noticeably irritating below 10 ppm.
    • For more Odor Threshold (Complete) data for DICYCLOPENTADIENE (7 total), please visit the HSDB record page.

  • Properties

    XLogP3-AA
    2.5

    pKa est.
    8.22 (weak base)

    Molecular weight
    132.2 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Very fast

    Melting point expt.

    • 92.5 °F (NTP, 1992)
    • 32.9 °C
    • 32-34 °C
    • 92.5 °F
    • 90 °F

    Boiling point

    • 342 °F at 760 mmHg (NTP, 1992)
    • 172 °C
    • 342 °F

    Flash point

    • 39.01 ˚C est.
    • 90 °F (NTP, 1992)
    • 32 °C
    • 24 °C (75 °F)
    • 90 °F (32 °C) (Open cup)
    • 32 °C o.c.
    • 90 °F (open cup)
    • (oc) 90 °F

    Solubility expt.

    • Insoluble (NTP, 1992)
    • In water, 0.020 g/L at 25 °C
    • Very soluble in ethyl ether, ethanol
    • Readily sol in acetone, dichloromethane, ethyl acetate, n-hexane, and toluene.
    • Solubility in water, g/100ml at 25 °C: 0.002
    • 0.02%

  • Synonyms

    • DICYCLOPENTADIENE
    • 77-73-6
    • Cyclopentadiene dimer
    • Bicyclopentadiene
    • Biscyclopentadiene
    • Dicyklopentadien
    • Dimer cyklopentadienu
    • 4,7-Methano-1H-indene, 3a,4,7,7a-tetrahydro-
    • DCPD
    • NSC 7352
    • 3a,4,7,7a-Tetrahydro-4,7-methanoindene
    • Prometa XP 100
    • 4,7-Methanoindene, 3a,4,7,7a-tetrahydro-
    • CCRIS 4790
    • HSDB 321
    • 3a,4,7,7a-tetrahydro-1H-4,7-methanoindene
    • 1,3-CPD
    • Tricyclo[5.2.1.02,6]deca-3,8-diene
    • alpha-Dicyclopentadiene (endo form)
    • EINECS 201-052-9
    • UN2048
    • Tricyclo(5.2.1.0)-3,8-decadiene
    • BRN 1904092
    • DTXSID5025023
    • 4,7-Methano-3a,4,7,7a-tetrahydroindene
    • AI3-03386
    • endo-Dicyclopentadiene
    • DTXCID305023
    • CHEBI:34695
    • Tricyclo[5.2.1.0(2,6)]deca-3,8-diene
    • 3a,4,7,7a-Tetrahydro-4,7-methano-1H-indene
    • EC 201-052-9
    • 2-05-00-00391 (Beilstein Handbook Reference)
    • NSC-7352
    • UN 2048
    • NCGC00090776-02
    • 1755-01-7
    • Dicyklopentadien [Czech]
    • Tricyclo(5.2.1.0)deca-3,8-diene
    • Tricyclo[5.2.1.0]deca-3,8-diene
    • (3a.alpha.,4.alpha.,7.alpha.,7a.alpha.)-3a,4,7,7a-Tetrahydro-4,7-methano-1H-indene
    • Dimer cyklopentadienu [Czech]
    • ULTRENE 99
    • Tricyclo(5.2.1.0(2,6))deca-3,8-diene
    • 1,3-Dicyclopentadiene
    • TRICYCLO(5.2.1.02,6)DECA-3,8-DIENE
    • 933-60-8
    • DCPD 103
    • DICYCLOPENTADIENE [HSDB]
    • 1,3-Dicyclopentadiene dimer
    • 4,7-Methano-1H-indene, 3a,4,7,7a-tetrahydro-, (3a.alpha.,4.alpha.,7.alpha.,7a.alpha.)-
    • 1, dimer
    • Tricyclo[5.2.1.0<2,6>]deca-3,8-diene
    • 1,3Cyclopentadiene, dimer
    • Dicyclopentadiene (ACGIH)
    • MLS001055376
    • 1,3CPD
    • CHEMBL1570502
    • NSC7352
    • 4,7-METHANO-1H-INDENE, 3A,4,7,7A-TETRAHYDRO-, (3AR,4S,7R,7AS)-REL-
    • alphaDicyclopentadiene (endo form)
    • HMS3039J06
    • 3A,4,7,7A-TETRAHYDRO-
    • WLN: L C555 A DU IUTJ
    • Tricyclo(5.2.1.0)3,8decadiene
    • Tox21_400017
    • MFCD00082365
    • STL445669
    • 3a,4,7,7aTetrahydro4,7methanoindene
    • AKOS000119974
    • AKOS022186108
    • tricyclo[5.2.1.0,deca-3,8-diene
    • RP10204
    • 3a,7,7a-Tetrahydro-4,7-methanoindene
    • CAS-77-73-6
    • 4,7Methanoindene, 3a,4,7,7atetrahydro
    • NCGC00090776-01
    • NCGC00090776-03
    • AC-16096
    • SMR000677942
    • 4,7Methano1Hindene, 3a,4,7,7atetrahydro
    • Dicyclopentadiene contains BHT as stabilizer
    • tricyclo[5.2.1.0(2),]deca-3,8-diene
    • tricyclo[5.2.1.0,2,6]deca-3,8-diene
    • D0443
    • NS00002399
    • EN300-19736
    • Dicyclopentadiene [UN2048] [Flammable liquid]
    • Q419053
    • F0001-1975
    • 217-145-2

  • Applications

    Dicyclopentadiene is primarily used as a chemical building block in polymer and resin manufacture: it serves as the feedstock for polydicyclopentadiene (PDCPD) thermoset resins produced by ring-opening metathesis polymerization (ROMP), which are applied in high-performance coatings, sealants, adhesives, and fiber-reinforced composites; it can be cracked to cyclopentadiene, a fundamental starting material for cyclopentadienyl chemistry and for norbornene-type monomers used in specialty polymers and high-temperature resins; as a reactive monomer it enhances rigidity and chemical resistance in unsaturated polyester and related resin systems; and it functions as a versatile intermediate for producing norbornene derivatives and other monomers used in advanced materials for electronics, automotive, and aerospace applications.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 458.54
    methanol 450.83
    isopropanol 333.16
    water 1.89
    ethyl acetate 812.51
    n-propanol 418.74
    acetone 686.92
    n-butanol 433.8
    acetonitrile 507.36
    DMF 346.58
    toluene 737.29
    isobutanol 290.19
    1,4-dioxane 1364.13
    methyl acetate 533.51
    THF 1516.53
    2-butanone 559.92
    n-pentanol 270.0
    sec-butanol 282.7
    n-hexane 177.33
    ethylene glycol 111.51
    NMP 363.96
    cyclohexane 344.79
    DMSO 414.55
    n-butyl acetate 595.69
    n-octanol 176.59
    chloroform 1391.82
    n-propyl acetate 337.24
    acetic acid 357.27
    dichloromethane 1177.82
    cyclohexanone 743.93
    propylene glycol 132.87
    isopropyl acetate 521.43
    DMAc 303.85
    2-ethoxyethanol 392.52
    isopentanol 385.61
    n-heptane 182.05
    ethyl formate 328.4
    1,2-dichloroethane 729.12
    n-hexanol 433.85
    2-methoxyethanol 594.99
    isobutyl acetate 254.42
    tetrachloromethane 379.91
    n-pentyl acetate 248.12
    transcutol 1841.05
    n-heptanol 176.96
    ethylbenzene 206.16
    MIBK 422.01
    2-propoxyethanol 681.72
    tert-butanol 353.78
    MTBE 579.59
    2-butoxyethanol 322.06
    propionic acid 315.3
    o-xylene 304.27
    formic acid 132.13
    diethyl ether 981.64
    m-xylene 437.76
    p-xylene 217.76
    chlorobenzene 525.46
    dimethyl carbonate 264.87
    n-octane 62.62
    formamide 190.95
    cyclopentanone 722.33
    2-pentanone 597.36
    anisole 379.14
    cyclopentyl methyl ether 813.42
    gamma-butyrolactone 698.21
    1-methoxy-2-propanol 527.9
    pyridine 893.45
    3-pentanone 496.84
    furfural 567.34
    n-dodecane 46.4
    diethylene glycol 482.84
    diisopropyl ether 396.1
    tert-amyl alcohol 252.87
    acetylacetone 631.95
    n-hexadecane 52.54
    acetophenone 256.5
    methyl propionate 512.05
    isopentyl acetate 509.01
    trichloroethylene 1027.6
    n-nonanol 166.54
    cyclohexanol 417.05
    benzyl alcohol 236.68
    2-ethylhexanol 287.6
    isooctanol 156.34
    dipropyl ether 603.42
    1,2-dichlorobenzene 394.65
    ethyl lactate 138.96
    propylene carbonate 406.81
    n-methylformamide 266.08
    2-pentanol 313.74
    n-pentane 225.6
    1-propoxy-2-propanol 532.16
    1-methoxy-2-propyl acetate 572.65
    2-(2-methoxypropoxy) propanol 326.35
    mesitylene 300.29
    ε-caprolactone 605.75
    p-cymene 174.37
    epichlorohydrin 862.89
    1,1,1-trichloroethane 708.5
    2-aminoethanol 191.14
    morpholine-4-carbaldehyde 595.31
    sulfolane 478.15
    2,2,4-trimethylpentane 91.63
    2-methyltetrahydrofuran 923.8
    n-hexyl acetate 334.55
    isooctane 113.51
    2-(2-butoxyethoxy)ethanol 527.2
    sec-butyl acetate 266.44
    tert-butyl acetate 474.25
    decalin 125.95
    glycerin 209.62
    diglyme 909.3
    acrylic acid 246.09
    isopropyl myristate 174.5
    n-butyric acid 509.36
    acetyl acetate 534.26
    di(2-ethylhexyl) phthalate 130.23
    ethyl propionate 320.76
    nitromethane 538.04
    1,2-diethoxyethane 856.65
    benzonitrile 343.34
    trioctyl phosphate 97.08
    1-bromopropane 635.0
    gamma-valerolactone 814.21
    n-decanol 133.12
    triethyl phosphate 163.89
    4-methyl-2-pentanol 248.18
    propionitrile 449.1
    vinylene carbonate 428.82
    1,1,2-trichlorotrifluoroethane 400.58
    DMS 317.57
    cumene 148.02
    2-octanol 116.36
    2-hexanone 325.8
    octyl acetate 185.09
    limonene 257.22
    1,2-dimethoxyethane 612.58
    ethyl orthosilicate 180.18
    tributyl phosphate 125.1
    diacetone alcohol 349.41
    N,N-dimethylaniline 216.38
    acrylonitrile 426.6
    aniline 515.43
    1,3-propanediol 325.41
    bromobenzene 615.21
    dibromomethane 908.75
    1,1,2,2-tetrachloroethane 702.25
    2-methyl-cyclohexyl acetate 260.65
    tetrabutyl urea 137.47
    diisobutyl methanol 221.33
    2-phenylethanol 311.36
    styrene 268.53
    dioctyl adipate 197.95
    dimethyl sulfate 240.19
    ethyl butyrate 400.19
    methyl lactate 201.33
    butyl lactate 162.65
    diethyl carbonate 253.02
    propanediol butyl ether 237.1
    triethyl orthoformate 296.7
    p-tert-butyltoluene 172.69
    methyl 4-tert-butylbenzoate 226.34
    morpholine 1087.78
    tert-butylamine 308.63
    n-dodecanol 112.73
    dimethoxymethane 683.25
    ethylene carbonate 409.79
    cyrene 211.33
    2-ethoxyethyl acetate 440.78
    2-ethylhexyl acetate 415.5
    1,2,4-trichlorobenzene 430.45
    4-methylpyridine 682.8
    dibutyl ether 372.83
    2,6-dimethyl-4-heptanol 221.33
    DEF 463.6
    dimethyl isosorbide 497.36
    tetrachloroethylene 576.49
    eugenol 210.18
    triacetin 327.28
    span 80 247.55
    1,4-butanediol 131.66
    1,1-dichloroethane 718.47
    2-methyl-1-pentanol 250.24
    methyl formate 225.8
    2-methyl-1-butanol 317.23
    n-decane 70.92
    butyronitrile 464.73
    3,7-dimethyl-1-octanol 230.68
    1-chlorooctane 167.49
    1-chlorotetradecane 88.55
    n-nonane 73.36
    undecane 55.75
    tert-butylcyclohexane 107.91
    cyclooctane 184.28
    cyclopentanol 333.92
    tetrahydropyran 1123.66
    tert-amyl methyl ether 375.05
    2,5,8-trioxanonane 606.53
    1-hexene 312.32
    2-isopropoxyethanol 317.13
    2,2,2-trifluoroethanol 154.34
    methyl butyrate 333.83

    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