SAPONIFIED CRESOL SOLUTIONS. 
Soy-bean- 
oil soap. 
Rosin 
soap. 
Remarks. 
Per cent. 
10 
20 
25 
30 
40 
50 
60 
70 
80 
90 
Per cent. 
90 
80 
75 
70 
60 
50 
40 
30 
20 
10 
Shows faint clouding after 1J hours. 
Shows faint clouding after 2J hours. 
Clear after 5 hours; faint cloud at 24 
hours. 
Clear at 24 hours (sometimes faintly 
cloudy). 
Faint cloud after 48 hours. 
Clear at 7 days. 
Clear after 7 days. 
Do. 
Do. 
Do. 
OBSERVATIONS ON SPEED OF DILUTION 
All dilute clear and more quickly than the saponified cresol solu- 
tion prepared from soy-bean oil only; those containing the larger 
proportion of soy-bean oil to rosin more nearly approach straight 
soy-bean oil in speed of dilution. None separate or solidify when 
held at 32° F. All are more viscous than the straight soy-bean oil 
preparation. Amounts of sodium hydroxid up to 20 per cent in excess 
of that theoretically required in similar preparations retard the speed 
of dilution and only to a slight extent the clouding. 
Three per cent dilutions were made, using tap water instead of 
distilled water. The saponified cresol solution made with straight 
soy-bean-oil soap clouded immediately. The soy-bean oil 10 per 
cent, rosin 90 per cent, clouded after about one-half hour. The 
soy-bean oil 30 per cent, rosin 70 per cent, was clear at 5 hours but 
cloudy at 24 hours. Amounts of sodium hydroxid up to 20 per cent 
in excess of that theoretically required in preparations like these 
had little effect on their tendency to cloud. 
A saponified cresol solution made by mixing a saponified cresol 
solution containing linseed-oil soap and the solution containing the 
rosin soap so as to contain a soap equivalent to linseed oil 25 per cent, 
rosin 75 per cent, behaves very much like that made with soy-bean 
oil 25 per cent, rosin 75 per cent. 
A saponified cresol solution made Dy mixing a solution containing 
fish-oil (menhaden) soap and the solution containing the rosin soap 
so as to contain a soap equivalent to linseed oil 25 per cent, rosin 75 
per cent, behaves very much like that made with soy-bean oil 25 
per cent, rosin 75 per cent. 
A saponified cresol solution containing 7 per cent by weight of soy- 
bean oil as soap and 25 per cent by weight of rosin (containing 90 
per cent rosin acid) as soap will closely approximate a saponified 
cresol solution made by using a mixture of 25 per cent soy-bean-oil 
soap and 75 per cent rosin soap. The figures are convenient to use 
and a preparation made with this proportion of oil to rosin should be 
just as easy to manufacture as the saponified cresol solutions atpres- 
