SAPONIFIED CRESOL SOLUTIONS. 



soap \ ; and No. 15, rosin soap f , fish-oil soap \. Just enough sodium 

 hydroxid was used to saponify the rosin and oil. All these saponified 

 cresol solutions were made with the same sample of cresol. 



No. 



Phenol co- 

 efficient. 



10 

 11 

 12 

 13 

 14 

 15 



2.6 

 2.1 

 1.9 

 2.2 

 2.6 

 2.6 



SUMMARY 



Saponified cresol solutions have been made by using soap mixtures 

 composed largely of rosin soap. These saponified cresol solutions 

 have at least as great a disinfecting power as saponified cresol solutions 

 made with linseed-oil soap, and are much cheaper. When diluted 

 with water to a 3 per cent solution the saponified cresol solutions re- 

 main clear for varying periods, depending upon the amount of rosin 

 soap present. 



Clouding in cresol-rosin-soap solutions is due to precipitation of 

 rosin. 



Saponified cresol solutions containing soaps made from several 

 different vegetable oils and fish oil did not vary greatly in disin- 

 fecting power. 



Saponified cresol solutions containing rosin soap appear to have a 

 somewhat higher disinfecting power than those containing only vege- 

 table oil or fish oil. 



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