2-Methyl-2-pentene

Overview IFRA Request a quote

  • Identifiers

    CAS number
    625-27-4

    Molecular formula
    C6H12

    SMILES
    CCC=C(C)C

    Safety labels

    Flammable
    Flammable

    Irritant
    Irritant

    Health Hazard
    Health

  • Odor profile

    Fragrance
    Gassy 46.32%
    Fresh 45.56%
    Ethereal 41.4%
    Green 40.32%
    Fruity 37.24%
    Citrus 35.73%
    Sweet 35.61%
    Herbal 30.91%
    Woody 28.77%
    Lemon 26.99%

     

    Flavor
    Citrus 48.94%
    Green 42.67%
    Sweet 37.89%
    Fruity 37.76%
    Woody 36.03%
    Nutty 29.41%
    Gasoline 28.93%
    Earthy 28.39%
    Pungent 27.92%
    Ethereal 25.79%

     

    Odor impact est.
    Medium

  • Properties

    XLogP3-AA
    2.7

    pKa est.
    10.96 (weak base)

    Molecular weight
    84.16 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra fast

    Boiling point est.
    63°C

    Flash point

    • -26.47 ˚C est.

  • Synonyms

    • 2-METHYL-2-PENTENE
    • 625-27-4
    • 2-Methylpent-2-ene
    • 2-Pentene, 2-methyl-
    • 4-Methyl-3-pentene
    • Pentene, methyl-
    • EINECS 210-883-6
    • 7KOG6SH4S6
    • NSC 73910
    • 1,1-Dimethyl-1-butene
    • NSC-73910
    • 37275-41-5
    • DTXSID8073217
    • METHYLPENTENE
    • UNII-7KOG6SH4S6
    • 2Methylpent2ene
    • 2Methylpentene2
    • 4Methyl3pentene
    • NSC73910
    • 2Pentene, 2methyl
    • MFCD00009382
    • 2-Methyl-pentene-2
    • trans-2-Methyl-2-pentene
    • 2-Methyl-2-pentene, 98%
    • (CH3)2C=CHC2H5
    • DTXCID8043365
    • AKOS015912965
    • DB-054190
    • M0541
    • NS00035060
    • D91353
    • Q24763010

  • Applications

    2-Methyl-2-pentene (CAS 625-27-4) is a branched internal olefin primarily used as an organic synthesis intermediate and as a processing aid in industrial formulations. In polymers and plastics, it can serve as a monomer or comonomer to produce branched polyolefins and specialty polymers. In coatings and inks, it functions as a solvent or reactive diluent to adjust viscosity and facilitate formulation. In adhesives and cleaning products, it can act as a non-polar solvent or formulation component. It is also used as a building block in industrial manufacturing, supporting the synthesis of hydrocarbons and functional additives. These applications are typically subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 1023.84
    methanol 679.26
    isopropanol 805.53
    water 0.31
    ethyl acetate 1040.78
    n-propanol 903.47
    acetone 780.37
    n-butanol 1276.53
    acetonitrile 491.97
    DMF 416.93
    toluene 785.9
    isobutanol 668.91
    1,4-dioxane 1547.77
    methyl acetate 655.01
    THF 2816.74
    2-butanone 927.08
    n-pentanol 793.16
    sec-butanol 1003.63
    n-hexane 2399.87
    ethylene glycol 80.47
    NMP 768.63
    cyclohexane 2105.0
    DMSO 440.71
    n-butyl acetate 2313.71
    n-octanol 891.35
    chloroform 1718.5
    n-propyl acetate 630.31
    acetic acid 461.19
    dichloromethane 1179.5
    cyclohexanone 1415.49
    propylene glycol 171.29
    isopropyl acetate 710.07
    DMAc 483.99
    2-ethoxyethanol 507.83
    isopentanol 1072.73
    n-heptane 3376.52
    ethyl formate 380.31
    1,2-dichloroethane 783.14
    n-hexanol 2700.71
    2-methoxyethanol 756.36
    isobutyl acetate 463.36
    tetrachloromethane 681.71
    n-pentyl acetate 803.94
    transcutol 1757.62
    n-heptanol 920.48
    ethylbenzene 391.57
    MIBK 609.2
    2-propoxyethanol 1679.78
    tert-butanol 1236.48
    MTBE 1724.54
    2-butoxyethanol 764.94
    propionic acid 433.18
    o-xylene 464.2
    formic acid 80.12
    diethyl ether 2295.18
    m-xylene 497.24
    p-xylene 442.87
    chlorobenzene 556.31
    dimethyl carbonate 131.27
    n-octane 726.14
    formamide 84.94
    cyclopentanone 1123.97
    2-pentanone 1007.93
    anisole 475.39
    cyclopentyl methyl ether 1777.83
    gamma-butyrolactone 820.49
    1-methoxy-2-propanol 673.64
    pyridine 831.02
    3-pentanone 794.52
    furfural 544.13
    n-dodecane 321.2
    diethylene glycol 487.96
    diisopropyl ether 924.04
    tert-amyl alcohol 1272.23
    acetylacetone 559.8
    n-hexadecane 352.24
    acetophenone 317.72
    methyl propionate 536.28
    isopentyl acetate 1607.21
    trichloroethylene 982.73
    n-nonanol 813.98
    cyclohexanol 1374.95
    benzyl alcohol 287.19
    2-ethylhexanol 2305.11
    isooctanol 716.44
    dipropyl ether 3009.37
    1,2-dichlorobenzene 449.49
    ethyl lactate 182.7
    propylene carbonate 546.55
    n-methylformamide 220.04
    2-pentanol 1110.45
    n-pentane 1747.14
    1-propoxy-2-propanol 1826.46
    1-methoxy-2-propyl acetate 962.76
    2-(2-methoxypropoxy) propanol 619.25
    mesitylene 333.49
    ε-caprolactone 1091.11
    p-cymene 574.2
    epichlorohydrin 951.01
    1,1,1-trichloroethane 1152.43
    2-aminoethanol 230.41
    morpholine-4-carbaldehyde 744.87
    sulfolane 757.64
    2,2,4-trimethylpentane 586.5
    2-methyltetrahydrofuran 2827.99
    n-hexyl acetate 1109.09
    isooctane 434.77
    2-(2-butoxyethoxy)ethanol 859.06
    sec-butyl acetate 498.93
    tert-butyl acetate 798.02
    decalin 600.58
    glycerin 171.76
    diglyme 1179.11
    acrylic acid 244.65
    isopropyl myristate 543.42
    n-butyric acid 900.36
    acetyl acetate 447.32
    di(2-ethylhexyl) phthalate 311.61
    ethyl propionate 533.38
    nitromethane 388.81
    1,2-diethoxyethane 1651.82
    benzonitrile 407.02
    trioctyl phosphate 297.21
    1-bromopropane 1503.72
    gamma-valerolactone 997.75
    n-decanol 634.95
    triethyl phosphate 351.17
    4-methyl-2-pentanol 619.76
    propionitrile 644.23
    vinylene carbonate 345.19
    1,1,2-trichlorotrifluoroethane 522.7
    DMS 341.88
    cumene 280.79
    2-octanol 675.42
    2-hexanone 835.94
    octyl acetate 669.7
    limonene 1350.5
    1,2-dimethoxyethane 1051.29
    ethyl orthosilicate 440.46
    tributyl phosphate 361.22
    diacetone alcohol 621.35
    N,N-dimethylaniline 329.67
    acrylonitrile 401.29
    aniline 541.43
    1,3-propanediol 395.3
    bromobenzene 639.96
    dibromomethane 1271.66
    1,1,2,2-tetrachloroethane 965.73
    2-methyl-cyclohexyl acetate 810.66
    tetrabutyl urea 435.88
    diisobutyl methanol 997.78
    2-phenylethanol 634.59
    styrene 428.95
    dioctyl adipate 486.12
    dimethyl sulfate 134.27
    ethyl butyrate 1162.2
    methyl lactate 165.74
    butyl lactate 420.44
    diethyl carbonate 509.65
    propanediol butyl ether 470.67
    triethyl orthoformate 870.46
    p-tert-butyltoluene 566.46
    methyl 4-tert-butylbenzoate 441.11
    morpholine 1740.57
    tert-butylamine 1228.18
    n-dodecanol 513.16
    dimethoxymethane 523.83
    ethylene carbonate 376.47
    cyrene 311.56
    2-ethoxyethyl acetate 674.56
    2-ethylhexyl acetate 1598.3
    1,2,4-trichlorobenzene 491.39
    4-methylpyridine 885.03
    dibutyl ether 1842.22
    2,6-dimethyl-4-heptanol 997.78
    DEF 860.22
    dimethyl isosorbide 831.75
    tetrachloroethylene 703.22
    eugenol 358.91
    triacetin 488.07
    span 80 774.33
    1,4-butanediol 151.59
    1,1-dichloroethane 1011.02
    2-methyl-1-pentanol 814.94
    methyl formate 147.49
    2-methyl-1-butanol 1056.76
    n-decane 624.01
    butyronitrile 1033.19
    3,7-dimethyl-1-octanol 1028.28
    1-chlorooctane 977.57
    1-chlorotetradecane 392.09
    n-nonane 768.03
    undecane 420.52
    tert-butylcyclohexane 609.64
    cyclooctane 1030.75
    cyclopentanol 967.58
    tetrahydropyran 2841.98
    tert-amyl methyl ether 1505.94
    2,5,8-trioxanonane 792.34
    1-hexene 2337.07
    2-isopropoxyethanol 473.39
    2,2,2-trifluoroethanol 97.86
    methyl butyrate 641.88

    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