The extent to which a soap is hydrolysed depends upon the acid and on the concentration of the solution; it is also affected by the presence of metallic salts, e.g.
This, when cast into forms and allowed to harden and dry slowly, comes out as transparent soap. A class of transparent soap may also be made by the cold process, with the use of coco-nut oil, castor oil and sugar.
Marseilles has long been recognized as the most important centre of the soap trade, a position that city originally achieved through its ready command of the supplies of olive oil.
The industries include the manufacture of tobacco, cigars, machinery, vinegar, soap and bricks, and there is a considerable trade by water in agricultural produce.
Previous to Chevreul's researches on the fats (1811-1823) it was believed that soap consisted simply of a binary compound of fat and alkali.
The governors were directed to regulate religious instruction in secular schools, to prevent horse-stealing, to control subscriptions collected for the holy places in Palestine, to regulate the advertisements of medicines and the printing on cigarette papers, to examine the quality of quinine soap and overlook the cosmetics and other toilet articles - such as soap, starch, brillantine, tooth-brushes and insect-powder - provided by chemists.
There is no separation of underlyes in potash soap, consequently the product contains the whole constituents of the oils used, as the operation of salting out is quite impracticable owing to the double decomposition which results from the action of salt, producing thereby a hard principally soda soap with formation of potassium chloride.
There are also potteries, paper, soap and shoe factories, flour mills and breweries, and the many mineral springs.
Brewing, saw-milling, boat-building, and the manufacture of biscuits, soap and submarine cables are also carried on.
A warm embrace caught her mid-fall over the cliff, and the scent of soap and man penetrated her bewildered senses.