Heat on a steam bath until saponification is complete. The soap thus formed is dissolved in 300 parts of hot distilled water, and salted out by adding a filtered solution of 25 parts of sodium chloride and 5 parts of crystallized sodium carbonate in 80 parts of water.
Sapo Mollis.—
| Olive oil | 100 parts |
| Solid potassium hydroxide | 21 parts |
| Water | 100 parts |
| Alcohol (90 per cent) | 20 parts |
Boil by means of a steam bath until the oil is saponified, adding, if necessary, a little more spirit to assist the saponification.