Ether, isobutyl methyl

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  • Identifiers

    CAS number
    625-44-5

    Molecular formula
    C5H12O

    SMILES
    CC(C)COC

    Safety labels

  • Odor profile

    Fragrance
    Ethereal 86.35%
    Alcoholic 61.08%
    Fermented 59.63%
    Fruity 57.26%
    Sweet 49.26%
    Solvent 47.35%
    Winey 40.1%
    Fresh 39.69%
    Green 35.31%
    Pungent 34.46%

     

    Flavor
    Fruity 43.19%
    Ether 40.25%
    Green 39.95%
    Ethereal 36.24%
    Bitter 35.08%
    Alcoholic 32.11%
    Solvent 31.83%
    Wine 29.94%
    Sweet 27.48%
    Fusel 25.79%

     

    Odor impact est.
    High

  • Properties

    XLogP3-AA
    1.4

    pKa est.
    7.58 (neutral)

    Molecular weight
    88.15 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra fast

    Boiling point est.
    61°C

    Flash point

    • -23.15 ˚C est.

  • Synonyms

    • Isobutyl methyl ether
    • Ether, isobutyl methyl
    • METHYL ISOBUTYL ETHER
    • Methyl isobutyl oxide
    • 625-44-5
    • BRN 1730971
    • DTXSID70211540
    • 1Methoxy2methylpropane
    • Propane, 1methoxy2methyl
    • RefChem:592689
    • DTXCID00134031
    • Propane, 1methoxy2methyl (9CI)
    • 1-Methoxy-2-methylpropane
    • Propane, 1-methoxy-2-methyl-
    • isobutyl methyl
    • methyl iso-butyl ether
    • 9K4TEE7AED
    • 3-Methoxy-2-methylpropane
    • 1-methoxy-2-methyl-propane
    • SCHEMBL20100
    • SCHEMBL20101
    • SCHEMBL25403
    • SCHEMBL97635
    • 1-Methoxy-2-methylpropane #
    • SCHEMBL127999
    • SCHEMBL1478858
    • SCHEMBL2818104
    • SCHEMBL7676022
    • SCHEMBL10297344
    • SCHEMBL17650444
    • SCHEMBL20425296
    • SCHEMBL28780178
    • AKOS006230258
    • Q29414987
    • InChI=1/C5H12O/c1-5(2)4-6-3/h5H,4H2,1-3H
    • 625-44-5

  • Applications

    Methyl isobutyl ether (Ether, isobutyl methyl; CAS 625-44-5) is an organic solvent used across a range of industrial applications, including coatings and finishes, inks and adhesives; as a solvent for polymer processing and resin formulations; as a processing solvent in chemical synthesis and industrial manufacturing; as a cleaning solvent for equipment and process tooling in production; and may be used for electronics and precision cleaning, depending on formulation and local regulations.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 3249.3
    methanol 3909.55
    isopropanol 1810.99
    water 10.42
    ethyl acetate 1066.98
    n-propanol 2034.34
    acetone 970.68
    n-butanol 2345.83
    acetonitrile 1036.85
    DMF 629.53
    toluene 457.26
    isobutanol 1380.63
    1,4-dioxane 1538.5
    methyl acetate 857.48
    THF 2190.0
    2-butanone 944.77
    n-pentanol 1214.16
    sec-butanol 1700.87
    n-hexane 810.13
    ethylene glycol 628.55
    NMP 765.5
    cyclohexane 957.35
    DMSO 632.72
    n-butyl acetate 1857.33
    n-octanol 794.18
    chloroform 3085.07
    n-propyl acetate 735.34
    acetic acid 3156.93
    dichloromethane 2211.04
    cyclohexanone 1390.18
    propylene glycol 718.4
    isopropyl acetate 631.76
    DMAc 501.34
    2-ethoxyethanol 1210.28
    isopentanol 1671.94
    n-heptane 1006.16
    ethyl formate 870.8
    1,2-dichloroethane 996.19
    n-hexanol 2410.3
    2-methoxyethanol 1990.21
    isobutyl acetate 484.01
    tetrachloromethane 1295.59
    n-pentyl acetate 749.29
    transcutol 2767.43
    n-heptanol 906.94
    ethylbenzene 266.5
    MIBK 509.29
    2-propoxyethanol 2130.71
    tert-butanol 1850.74
    MTBE 1313.52
    2-butoxyethanol 1113.7
    propionic acid 1380.9
    o-xylene 290.57
    formic acid 1046.21
    diethyl ether 1663.82
    m-xylene 291.26
    p-xylene 353.51
    chlorobenzene 589.67
    dimethyl carbonate 159.52
    n-octane 231.91
    formamide 628.87
    cyclopentanone 1125.69
    2-pentanone 899.41
    anisole 436.18
    cyclopentyl methyl ether 1275.66
    gamma-butyrolactone 1053.79
    1-methoxy-2-propanol 1141.04
    pyridine 1008.84
    3-pentanone 578.87
    furfural 968.29
    n-dodecane 124.58
    diethylene glycol 1281.22
    diisopropyl ether 513.01
    tert-amyl alcohol 1674.61
    acetylacetone 558.88
    n-hexadecane 132.17
    acetophenone 346.38
    methyl propionate 544.33
    isopentyl acetate 1382.01
    trichloroethylene 1811.96
    n-nonanol 643.34
    cyclohexanol 1700.84
    benzyl alcohol 453.93
    2-ethylhexanol 1581.73
    isooctanol 663.53
    dipropyl ether 1497.33
    1,2-dichlorobenzene 515.08
    ethyl lactate 306.68
    propylene carbonate 784.09
    n-methylformamide 625.46
    2-pentanol 1433.83
    n-pentane 837.93
    1-propoxy-2-propanol 1799.17
    1-methoxy-2-propyl acetate 846.67
    2-(2-methoxypropoxy) propanol 634.39
    mesitylene 212.89
    ε-caprolactone 1267.57
    p-cymene 420.98
    epichlorohydrin 1216.33
    1,1,1-trichloroethane 1551.73
    2-aminoethanol 1101.68
    morpholine-4-carbaldehyde 961.52
    sulfolane 913.67
    2,2,4-trimethylpentane 286.11
    2-methyltetrahydrofuran 2073.16
    n-hexyl acetate 979.81
    isooctane 224.15
    2-(2-butoxyethoxy)ethanol 1013.77
    sec-butyl acetate 513.11
    tert-butyl acetate 675.8
    decalin 259.02
    glycerin 794.35
    diglyme 1546.33
    acrylic acid 1003.57
    isopropyl myristate 346.33
    n-butyric acid 2254.12
    acetyl acetate 579.5
    di(2-ethylhexyl) phthalate 297.49
    ethyl propionate 501.7
    nitromethane 1433.27
    1,2-diethoxyethane 1306.1
    benzonitrile 585.74
    trioctyl phosphate 254.64
    1-bromopropane 1281.13
    gamma-valerolactone 1326.32
    n-decanol 446.93
    triethyl phosphate 340.3
    4-methyl-2-pentanol 658.23
    propionitrile 929.73
    vinylene carbonate 678.75
    1,1,2-trichlorotrifluoroethane 1236.57
    DMS 354.04
    cumene 217.26
    2-octanol 584.28
    2-hexanone 743.56
    octyl acetate 464.15
    limonene 801.58
    1,2-dimethoxyethane 1423.33
    ethyl orthosilicate 415.57
    tributyl phosphate 327.17
    diacetone alcohol 699.89
    N,N-dimethylaniline 273.69
    acrylonitrile 760.43
    aniline 597.68
    1,3-propanediol 1554.98
    bromobenzene 558.48
    dibromomethane 1869.52
    1,1,2,2-tetrachloroethane 1530.51
    2-methyl-cyclohexyl acetate 716.51
    tetrabutyl urea 317.76
    diisobutyl methanol 755.36
    2-phenylethanol 652.79
    styrene 317.22
    dioctyl adipate 422.52
    dimethyl sulfate 177.74
    ethyl butyrate 1017.18
    methyl lactate 317.26
    butyl lactate 552.99
    diethyl carbonate 530.63
    propanediol butyl ether 789.94
    triethyl orthoformate 742.76
    p-tert-butyltoluene 404.52
    methyl 4-tert-butylbenzoate 410.86
    morpholine 1896.91
    tert-butylamine 1498.07
    n-dodecanol 336.02
    dimethoxymethane 555.08
    ethylene carbonate 620.14
    cyrene 392.0
    2-ethoxyethyl acetate 707.81
    2-ethylhexyl acetate 1174.11
    1,2,4-trichlorobenzene 608.87
    4-methylpyridine 905.5
    dibutyl ether 994.68
    2,6-dimethyl-4-heptanol 755.36
    DEF 777.08
    dimethyl isosorbide 847.98
    tetrachloroethylene 1337.01
    eugenol 416.24
    triacetin 540.44
    span 80 733.74
    1,4-butanediol 630.17
    1,1-dichloroethane 1342.61
    2-methyl-1-pentanol 1013.08
    methyl formate 474.4
    2-methyl-1-butanol 1566.33
    n-decane 228.61
    butyronitrile 1464.9
    3,7-dimethyl-1-octanol 807.49
    1-chlorooctane 539.6
    1-chlorotetradecane 199.74
    n-nonane 265.12
    undecane 157.16
    tert-butylcyclohexane 292.16
    cyclooctane 310.8
    cyclopentanol 1434.43
    tetrahydropyran 2225.68
    tert-amyl methyl ether 1019.93
    2,5,8-trioxanonane 878.84
    1-hexene 1210.27
    2-isopropoxyethanol 852.69
    2,2,2-trifluoroethanol 675.23
    methyl butyrate 731.07

    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