Monoisobutyl maleate

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  • Identifiers

    CAS number
    925-05-3

    Molecular formula
    C8H12O4

    SMILES
    CC(C)COC(=O)/C=C\C(=O)O

    Safety labels

  • Odor profile

    Fragrance
    Fruity 78.17%
    Winey 57.67%
    Caramellic 54.52%
    Sweet 49.87%
    Sour 43.82%
    Apple 33.51%
    Ethereal 32.11%
    Buttery 29.86%
    Rummy 28.89%
    Fermented 27.23%

     

    Flavor
    Fruity 34.65%
    Odorless 31.76%
    Sour 31.43%
    Caramel 22.63%
    Very mild 22.28%
    Acidic 21.28%
    Roquefort cheese 20.1%
    Acetoin 19.41%
    Musty 19.28%
    Caramellic 18.99%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    1.2

    pKa est.
    6.32 (neutral)

    Molecular weight
    172.18 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    261°C

    Flash point

    • 128.06 ˚C est.

  • Synonyms

    • monoisobutyl maleate
    • KDC7836164
    • 2-Butenedioic acid (2Z)-, mono(2-methylpropyl) ester
    • 2-METHYLPROPYL MALEATE
    • MALEIC ACID, ISOBUTYL ESTER
    • 2-Butenedioic acid (2Z)-, 1-(2-methylpropyl) ester
    • 2-Butenedioic acid (Z)-, mono(2-methylpropyl) ester
    • RefChem:819317
    • Maleic acid, monoisobutyl ester
    • Isobutyl hydrogen maleate
    • 925-05-3
    • UNII-KDC7836164
    • EINECS 213-112-1
    • Maleinsaureisobutylester
    • SCHEMBL809869
    • DTXSID6061286
    • (2Z)-4-(2-METHYLPROPOXY)-4-OXOBUT-2-ENOIC ACID
    • UKXDHEBARGMWMO-ARJAWSKDSA-N
    • NS00022877
    • Q27282193
    • 925-05-3

  • Applications

    Monoisobutyl maleate (CAS 925-05-3) is primarily used as a reactive monomer and intermediate in polymer and resin manufacture, particularly for unsaturated polyester resins and alkyd resins used in coatings. In coatings and paints, it is used as a comonomer or functional additive to optimize polymerization and improve surface bonding. In UV-curable coatings and inks, it serves as a reactive monomer that participates in polymerization under light exposure. In industrial manufacturing, it serves as an intermediate for specialty polymers and copolymers. In adhesives and sealants, it can function as a functional monomer to enable crosslinking. In certain formulations, it may act as a plasticizer or formulation aid to tune polymer properties, subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 411.01
    methanol 520.83
    isopropanol 247.56
    water 3.4
    ethyl acetate 83.2
    n-propanol 223.46
    acetone 206.72
    n-butanol 195.8
    acetonitrile 78.9
    DMF 581.06
    toluene 14.38
    isobutanol 146.85
    1,4-dioxane 105.31
    methyl acetate 122.68
    THF 282.87
    2-butanone 151.95
    n-pentanol 139.11
    sec-butanol 201.18
    n-hexane 2.62
    ethylene glycol 100.89
    NMP 235.0
    cyclohexane 1.31
    DMSO 399.83
    n-butyl acetate 80.58
    n-octanol 35.1
    chloroform 32.87
    n-propyl acetate 66.42
    acetic acid 174.55
    dichloromethane 44.59
    cyclohexanone 101.16
    propylene glycol 148.21
    isopropyl acetate 58.18
    DMAc 518.89
    2-ethoxyethanol 275.95
    isopentanol 182.64
    n-heptane 1.41
    ethyl formate 101.35
    1,2-dichloroethane 45.11
    n-hexanol 93.75
    2-methoxyethanol 450.35
    isobutyl acetate 42.39
    tetrachloromethane 4.7
    n-pentyl acetate 33.09
    transcutol 253.9
    n-heptanol 37.39
    ethylbenzene 18.3
    MIBK 74.91
    2-propoxyethanol 190.74
    tert-butanol 328.1
    MTBE 133.52
    2-butoxyethanol 92.4
    propionic acid 102.98
    o-xylene 15.91
    formic acid 166.12
    diethyl ether 58.1
    m-xylene 15.14
    p-xylene 21.87
    chlorobenzene 16.16
    dimethyl carbonate 40.68
    n-octane 1.14
    formamide 220.62
    cyclopentanone 156.6
    2-pentanone 106.09
    anisole 68.24
    cyclopentyl methyl ether 67.59
    gamma-butyrolactone 162.12
    1-methoxy-2-propanol 300.14
    pyridine 70.29
    3-pentanone 48.39
    furfural 155.48
    n-dodecane 1.29
    diethylene glycol 184.92
    diisopropyl ether 14.75
    tert-amyl alcohol 279.58
    acetylacetone 102.03
    n-hexadecane 1.35
    acetophenone 72.71
    methyl propionate 79.28
    isopentyl acetate 85.85
    trichloroethylene 73.82
    n-nonanol 31.21
    cyclohexanol 63.02
    benzyl alcohol 87.55
    2-ethylhexanol 47.02
    isooctanol 33.65
    dipropyl ether 21.41
    1,2-dichlorobenzene 18.46
    ethyl lactate 54.41
    propylene carbonate 96.85
    n-methylformamide 237.39
    2-pentanol 100.25
    n-pentane 2.14
    1-propoxy-2-propanol 120.35
    1-methoxy-2-propyl acetate 89.65
    2-(2-methoxypropoxy) propanol 97.83
    mesitylene 9.81
    ε-caprolactone 104.37
    p-cymene 11.86
    epichlorohydrin 197.04
    1,1,1-trichloroethane 23.53
    2-aminoethanol 213.15
    morpholine-4-carbaldehyde 230.85
    sulfolane 182.98
    2,2,4-trimethylpentane 2.99
    2-methyltetrahydrofuran 169.51
    n-hexyl acetate 47.73
    isooctane 1.9
    2-(2-butoxyethoxy)ethanol 121.92
    sec-butyl acetate 51.11
    tert-butyl acetate 81.1
    decalin 2.71
    glycerin 159.57
    diglyme 188.59
    acrylic acid 89.11
    isopropyl myristate 19.6
    n-butyric acid 128.36
    acetyl acetate 40.1
    di(2-ethylhexyl) phthalate 30.73
    ethyl propionate 52.46
    nitromethane 222.56
    1,2-diethoxyethane 58.71
    benzonitrile 53.41
    trioctyl phosphate 21.23
    1-bromopropane 25.44
    gamma-valerolactone 219.09
    n-decanol 24.14
    triethyl phosphate 28.39
    4-methyl-2-pentanol 60.62
    propionitrile 66.36
    vinylene carbonate 72.81
    1,1,2-trichlorotrifluoroethane 137.15
    DMS 41.01
    cumene 15.88
    2-octanol 24.51
    2-hexanone 80.08
    octyl acetate 27.16
    limonene 15.78
    1,2-dimethoxyethane 289.43
    ethyl orthosilicate 27.33
    tributyl phosphate 25.92
    diacetone alcohol 174.47
    N,N-dimethylaniline 57.73
    acrylonitrile 82.64
    aniline 43.33
    1,3-propanediol 258.44
    bromobenzene 12.43
    dibromomethane 27.26
    1,1,2,2-tetrachloroethane 63.9
    2-methyl-cyclohexyl acetate 47.51
    tetrabutyl urea 38.35
    diisobutyl methanol 26.36
    2-phenylethanol 69.24
    styrene 19.02
    dioctyl adipate 34.73
    dimethyl sulfate 71.38
    ethyl butyrate 50.18
    methyl lactate 77.39
    butyl lactate 44.68
    diethyl carbonate 35.53
    propanediol butyl ether 101.22
    triethyl orthoformate 33.85
    p-tert-butyltoluene 12.46
    methyl 4-tert-butylbenzoate 59.07
    morpholine 200.0
    tert-butylamine 140.48
    n-dodecanol 18.18
    dimethoxymethane 185.47
    ethylene carbonate 56.25
    cyrene 103.4
    2-ethoxyethyl acetate 51.19
    2-ethylhexyl acetate 53.21
    1,2,4-trichlorobenzene 28.2
    4-methylpyridine 98.97
    dibutyl ether 21.84
    2,6-dimethyl-4-heptanol 26.36
    DEF 134.2
    dimethyl isosorbide 137.1
    tetrachloroethylene 33.12
    eugenol 74.28
    triacetin 46.59
    span 80 67.02
    1,4-butanediol 130.56
    1,1-dichloroethane 33.47
    2-methyl-1-pentanol 138.39
    methyl formate 154.89
    2-methyl-1-butanol 158.89
    n-decane 1.79
    butyronitrile 85.91
    3,7-dimethyl-1-octanol 42.33
    1-chlorooctane 9.87
    1-chlorotetradecane 4.57
    n-nonane 1.57
    undecane 1.48
    tert-butylcyclohexane 3.68
    cyclooctane 0.73
    cyclopentanol 91.82
    tetrahydropyran 76.21
    tert-amyl methyl ether 103.62
    2,5,8-trioxanonane 144.9
    1-hexene 18.57
    2-isopropoxyethanol 163.34
    2,2,2-trifluoroethanol 62.17
    methyl butyrate 90.99

    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