4 4 nitrophenylazo catechol 2 5 5 10 11 0 0 0tetrabromocatechol 150 5 10 10 2 0 0lauryl gallate 150 5 10 11 0 600 600 lauryl gallate 2 5 5 10 10 2 10 7 0 0octyl gallate 150 5 10 10 5 600 250octyl gallate 2 5 5 10 10 8 600 300 methyl gallate 150 5 10 11 0 0 532 3 4 trihydroxybenzophenone 150 5 10 11 0 0 532 3 4 trihydroxybenzophenone 2 5 5 10 10 2 600 44 chlorocatechol 5 10 2 5 6 9 0 methyl 3 4 5 trihydroxy benzoate 150 5 10 10 4 0 0ethyl 3 4 dihydroxy benzoate 2 5 5 10 10 0 0 04 4 nitrophenylazo resorcinol 150 5 10 9 7 0 0 4 nitrophenylazo benzenetriol 150 5 10 10 2 0 0r isoproterenol hcl 150 5 10 10 9 0 0__________________________________________________________________________ missing values indicate samples were not tested three hydroxamic ha acid materials were synthesized in the laboratory as described earlier for sizing screening tests these compounds were n methylstearoyl ha stearoyl ha and oleyl ha they were tested similarly to the catechols described in the previous example results are reported in table 4 all of the materials proved to be effective sizes although results were quite variable this appears to be an indication of lack of optimization of the system rather than an inherent.