Isopentyl methacrylate

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  • Identifiers

    CAS number
    7336-27-8

    Molecular formula
    C9H16O2

    SMILES
    CC(C)CCOC(=O)C(=C)C

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fruity 76.85%
    Herbal 62.42%
    Chamomile 50.86%
    Sweet 48.8%
    Floral 45.68%
    Apple 44.32%
    Mint 39.7%
    Ethereal 35.68%
    Winey 32.6%
    Rose 31.05%

    Scent© AI

  • Properties

    XLogP3-AA
    3.3

    Molecular weight
    156.22 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Fast

    Boiling point est.
    179°C

    Flash point est.
    53.79 ˚C

  • Synonyms

    • 7336-27-8
    • Isopentyl methacrylate
    • 3-Methylbutyl methacrylate
    • 3-methylbutyl 2-methylprop-2-enoate
    • ISO-AMYLMETHACRYLATE
    • U45UJM2CVB
    • isoamyl methacrylate
    • EINECS 230-849-4
    • NSC-32636
    • 2-Propenoic acid, 2-methyl-, 3-methylbutyl ester
    • DTXSID70223603
    • NSC 32636
    • ISOPENTYL ALCOHOL, METHACRYLATE
    • ISOPENTYL 2-METHYL-2-PROPENOATE
    • METHACRYLIC ACID, ISOPENTYL ESTER
    • iso-amyl methacrylate
    • UNII-U45UJM2CVB
    • SCHEMBL41669
    • DTXCID60146094
    • NSC32636
    • AKOS006344686
    • DB-055756
    • NS00037507
    • 230-849-4

  • Applications

    Isopentyl methacrylate (CAS 7336-27-8) is a hydrophobic methacrylate monomer used as a co-monomer/reactive diluent in acrylic resins for coatings, adhesives, sealants, and printing inks—especially UV/EB-curable systems—where it reduces viscosity and VOC while enhancing flexibility, adhesion to plastics and metals, weatherability, and chemical and water resistance; upon copolymerization it yields low-Tg copolymers that deliver low-temperature flexibility, reduced brittleness, and improved performance in pressure-sensitive adhesives (labels and tapes), protective varnishes, wood/plastic/metal, automotive and industrial coatings, as well as printed films and overprints, and it is also employed to modify PMMA/acrylics and surface properties to balance hardness, gloss, and impact durability.

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 2532.31
    methanol 2587.03
    isopropanol 2075.24
    water 2.74
    ethyl acetate 2064.69
    n-propanol 1954.45
    acetone 2406.65
    n-butanol 1947.52
    acetonitrile 1627.71
    DMF 1851.08
    toluene 725.32
    isobutanol 1783.27
    1,4-dioxane 2545.12
    methyl acetate 1741.61
    THF 3021.11
    2-butanone 2119.0
    n-pentanol 1431.04
    sec-butanol 2323.28
    n-hexane 509.89
    ethylene glycol 244.94
    NMP 1801.38
    cyclohexane 581.18
    DMSO 1074.2
    n-butyl acetate 1873.66
    n-octanol 738.08
    chloroform 3551.41
    n-propyl acetate 1291.12
    acetic acid 3099.88
    dichloromethane 2421.36
    cyclohexanone 2727.82
    propylene glycol 467.47
    isopropyl acetate 1375.39
    DMAc 1760.51
    2-ethoxyethanol 1371.29
    isopentanol 1920.34
    n-heptane 156.2
    ethyl formate 1185.56
    1,2-dichloroethane 1794.2
    n-hexanol 1728.34
    2-methoxyethanol 1890.09
    isobutyl acetate 872.71
    tetrachloromethane 660.09
    n-pentyl acetate 922.0
    transcutol 3864.29
    n-heptanol 712.04
    ethylbenzene 571.62
    MIBK 1069.59
    2-propoxyethanol 1738.62
    tert-butanol 2739.9
    MTBE 2859.29
    2-butoxyethanol 971.65
    propionic acid 1609.33
    o-xylene 586.25
    formic acid 702.53
    diethyl ether 2014.98
    m-xylene 567.86
    p-xylene 849.33
    chlorobenzene 1031.92
    dimethyl carbonate 361.64
    n-octane 81.48
    formamide 835.01
    cyclopentanone 2162.92
    2-pentanone 1664.31
    anisole 963.24
    cyclopentyl methyl ether 1579.46
    gamma-butyrolactone 2199.75
    1-methoxy-2-propanol 1327.34
    pyridine 1907.61
    3-pentanone 1134.48
    furfural 1809.57
    n-dodecane 62.78
    diethylene glycol 911.52
    diisopropyl ether 708.23
    tert-amyl alcohol 2940.09
    acetylacetone 1415.9
    n-hexadecane 72.05
    acetophenone 913.62
    methyl propionate 1117.66
    isopentyl acetate 1829.4
    trichloroethylene 3813.63
    n-nonanol 621.27
    cyclohexanol 1819.03
    benzyl alcohol 800.62
    2-ethylhexanol 1000.22
    isooctanol 606.28
    dipropyl ether 770.01
    1,2-dichlorobenzene 924.5
    ethyl lactate 436.29
    propylene carbonate 1392.9
    n-methylformamide 1040.21
    2-pentanol 1627.47
    n-pentane 321.93
    1-propoxy-2-propanol 1330.29
    1-methoxy-2-propyl acetate 1222.24
    2-(2-methoxypropoxy) propanol 853.26
    mesitylene 402.56
    ε-caprolactone 2326.67
    p-cymene 370.23
    epichlorohydrin 2462.94
    1,1,1-trichloroethane 2342.71
    2-aminoethanol 692.78
    morpholine-4-carbaldehyde 1867.27
    sulfolane 1693.74
    2,2,4-trimethylpentane 242.16
    2-methyltetrahydrofuran 2944.66
    n-hexyl acetate 1423.54
    isooctane 179.75
    2-(2-butoxyethoxy)ethanol 1216.23
    sec-butyl acetate 1077.53
    tert-butyl acetate 1412.34
    decalin 282.42
    glycerin 506.66
    diglyme 1942.18
    acrylic acid 1154.02
    isopropyl myristate 438.33
    n-butyric acid 2709.13
    acetyl acetate 1170.23
    di(2-ethylhexyl) phthalate 401.25
    ethyl propionate 984.72
    nitromethane 3068.89
    1,2-diethoxyethane 1463.65
    benzonitrile 1046.08
    trioctyl phosphate 284.36
    1-bromopropane 1321.53
    gamma-valerolactone 2656.73
    n-decanol 426.85
    triethyl phosphate 359.52
    4-methyl-2-pentanol 898.52
    propionitrile 1227.08
    vinylene carbonate 1207.43
    1,1,2-trichlorotrifluoroethane 1682.16
    DMS 755.3
    cumene 432.36
    2-octanol 563.66
    2-hexanone 1445.63
    octyl acetate 575.92
    limonene 620.31
    1,2-dimethoxyethane 2270.25
    ethyl orthosilicate 404.71
    tributyl phosphate 402.73
    diacetone alcohol 1337.39
    N,N-dimethylaniline 621.99
    acrylonitrile 1245.56
    aniline 870.07
    1,3-propanediol 1186.86
    bromobenzene 1042.32
    dibromomethane 1828.11
    1,1,2,2-tetrachloroethane 3152.87
    2-methyl-cyclohexyl acetate 855.23
    tetrabutyl urea 449.98
    diisobutyl methanol 522.63
    2-phenylethanol 894.61
    styrene 666.11
    dioctyl adipate 563.47
    dimethyl sulfate 478.08
    ethyl butyrate 980.48
    methyl lactate 452.93
    butyl lactate 646.9
    diethyl carbonate 622.16
    propanediol butyl ether 896.29
    triethyl orthoformate 660.36
    p-tert-butyltoluene 349.06
    methyl 4-tert-butylbenzoate 693.92
    morpholine 3098.94
    tert-butylamine 1819.8
    n-dodecanol 304.19
    dimethoxymethane 997.55
    ethylene carbonate 1102.54
    cyrene 646.78
    2-ethoxyethyl acetate 1024.09
    2-ethylhexyl acetate 1357.06
    1,2,4-trichlorobenzene 1102.11
    4-methylpyridine 2087.48
    dibutyl ether 881.49
    2,6-dimethyl-4-heptanol 522.63
    DEF 1686.58
    dimethyl isosorbide 1202.61
    tetrachloroethylene 2094.56
    eugenol 682.09
    triacetin 840.06
    span 80 847.9
    1,4-butanediol 498.44
    1,1-dichloroethane 2420.14
    2-methyl-1-pentanol 1616.82
    methyl formate 820.4
    2-methyl-1-butanol 1980.16
    n-decane 116.86
    butyronitrile 1633.11
    3,7-dimethyl-1-octanol 795.17
    1-chlorooctane 467.7
    1-chlorotetradecane 164.29
    n-nonane 113.6
    undecane 82.35
    tert-butylcyclohexane 285.15
    cyclooctane 164.09
    cyclopentanol 1500.43
    tetrahydropyran 3011.06
    tert-amyl methyl ether 1895.57
    2,5,8-trioxanonane 1108.39
    1-hexene 1300.67
    2-isopropoxyethanol 1063.03
    2,2,2-trifluoroethanol 729.62
    methyl butyrate 1511.75

    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

Botanical

Name CAS Botanical Proportion
Roman chamomile (India) 8015-92-7 Anthemis nobilis L., fam. Asteraceae (Compositae) 0.51%
Roman chamomile (Japan) 8015-92-7 Anthemis nobilis L., fam. Asteraceae (Compositae) 0.98%
Roman chamomile (Germany) 1a hydrodistillate 8015-92-7 Anthemis nobilis L., fam. Asteraceae (Compositae) 1.53%
Roman chamomile (Germany) 1b headspace 8015-92-7 Anthemis nobilis L., fam. Asteraceae (Compositae) 1.24%
Roman chamomile (Italy) 6 8015-92-7 Anthemis nobilis L., fam. Asteraceae (Compositae) 0.2%