19 mob. phases table

Figure 19 : Mobile phase table according to H. Halpaap -
E. MERCK In addition to the data in figure 19 here are the
“Halpaap polarity numbers” ordering the elution strength on silica layers . The “kappa value” describes the speed of phase penetration into a 0.2 mm thick layer  (unit = square mm per second). The Halpaap numbers have been used in figure 19 .

   HPN    Kappa   mobile phase

    1       11.5      heptane 
    2       14.0      hexane 
    3       14.0      pentane   1
    4         6.5      cyclo hexane
    5       17.5      carbon disulfide
    6         7.0      carbon tetrachloride
    7       10.5      trichloroethylene 
    8         8.0      xylene
    9       11.0      toluene 
   10      10.5      benzene 
   11      11.5      chloroform
   12      13.0      dichloromethane 
   13      13.0      di iso propyl ether
   14        1.0      tert. butanol 
   15      15.5      diethyl ether
   16        1.5      Isobutyl Alcohol
   17       15.5     acetonitrile
   18         9.0      iso butyl methyl ketone
   19         2.5      propan-2-ol
   20       12.0      acetic acid ethyl ester
   21         3.0      propan-1-ol
   22       14.0      ethyl methyl ketone
   23       16.0      acetone
   24         4.0      ethanol
   25         6.5      dioxane
   26        12.5     tetrahydrofurane
   27         7.0      methanol
   28         8.0      pyridine