THE COLLOID-CHEMISTRY OF SOAP MANUFACTURE 177 



the properties of the soap formed to act as the colloid hydrate 

 for the emulsification of the fat. For proper emulsificatioii there 



is necessary not only an optimum r<iHTMtr:iii<n <>f tho. soap 

 used, but also a suitable kind of soap. 



For soap manufacture by the cold process the soaps of tin- 



