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A5: Dipole Moments

  • Page ID
    10976
  • The following table(1) lists the dipole moments of more common chemical substances. Along with the dipole moment the length of the dipole is shown.

    Substance State(2) Dipole Moment
    *1030 \(C\cdot m\)
    Dipole Length
    [pm]
    acetaldehyde b 8.3 52
    acetamide b 12.3 77
    acetic acid b 3.3 to 5.0 21 to 31
    acetone l 10.0 62
    acetonitrile b 11.7 73
    acetophenone b 9.7 60
    acetylacetone b 9.3 58
    acetyl chloride b 8.0 50
    acrolein b 9.7 60
    acrylonitrile b 11.7 73
    ammonia l 3.0 19
    aniline b 5.2 32
    anisole l 4.0 25
    benzamide b 12.2 76
    benzene l 0 0
    benzonitrile l 10.7 67
    benzophenone b 9.0 56
    bromobenzene l 5.0 31
    bromoethane b 6.0 37
    bromoform b 3.3 21
    carbon dioxide g 0 0
    carbon disulfide l 0 0
    carbonyl sulfide g 2.4 15
    chloroacetic acid b 7.7 48
    chlorobenzene l 5.2 32
    chloroethane b 6.7 42
    cyclohexanol b 6.0 37
    1,2-dibromoethane b 4.0 25
    dichloromethane b 6.0 37
    diethylamine l 3.7 23
    dimethylaniline b 5.2 32
    dimethylformamide l 12.7 79
    dimethylsulfoxide b 13.0 81
    dioxan b 1.3 8
    ethanol b 5.7 35
    ethyl acetate b 6.2 39
    ethylamine b 4.3 27
    ethylbenzene l 1.2 7
    ethylene carbonate b 16.0 100
    ethylene glycol b 6.7 42
    ethylene oxide l 6.3 40
    ethyl ether b 4.2 26
    formamide b 11.3 71
    formic acid b 5.0 31
    furan b 2.2 14
    hexane l 0 0
    hydrazine l 10.0 62
    hydrogen cyanide g 9.8 61
    hydrogen sulfide g 3.2 20
    iodoethane b 5.8 36
    methanol b 5.5 34
    methyl benzoate b 6.2 39
    methyl ether b 4.2 26
    morpholine b 5.0 31
    nitric oxide g 0.5 3
    nitrobenzene b 13.3 83
    nitrogen dioxide g 1.3 8
    nitromethane b 10.3 65
    oxygen g 0 0
    ozone g 2.2 14
    phenol b 5.3 33
    propylene oxide b 6.5 41
    pyridine l 7.7 48
    pyrrole b 6.0 37
    quinoline l 7.0 44
    styrene l 0.3 2
    sulfur hexafluoride g 0 0
    tetrachloromethane l 0 0
    tetrahydrofuran b 5.7 35
    thiophen l 1.6 10
    toluene l 1.3 8
    trichloromethane b 3.7 23
    triethylamine l 2.8 18
    s-trioxane b 7.3 46
    water l 6.7 to 10.0 42 to 62
    water g 6.2 39
    1. Data source: Tables of Physical & Chemical Constants (16th edition 1995). 2.1.4 Hygrometry. Kaye & Laby Online. Version 1.0 (2005) www.kayelaby.npl.co.uk
    2. l = liquid substance, b = substance solved in benzene, g = gaseous substance.

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