Hence the addition 60 g lÿ1 urea to a dye liquor
of Remazol Red F-3B (3.7510ÿ4 M, 0.31 g lÿ1)
will have little or no disaggregating eect. How-
ever the addition of 60 g lÿ1 urea to a dye liquor of
Procion Red MX-5B (6.510ÿ4 M, 0.37 g lÿ1)
will have a more significant effect.