Sliced soap

Use about equal parts of soap and oil. If bar soap is used, slice it into small chips. If both gasoline and fuel oil are available, use both in equal parts. 

The greasy tails can dissolve in each other, forming a spherical structure called a micelle. This is how soaps work in washing your hands or doing dishes. Figure 7.31 shows a two-dimensional slice out of a micelle. Formation of a micelle creates a nonpolar microenvironment in the water. So, when you are scrubbing... 

Soap Poultice. Dissolve 1 ounce scraped or sliced white soap in 4 pint boiling water, and mix with sufficient bread to make a poultice. This is good for scalds and bums. 

Sffachine for Slicing the Soap. — Previous to re-meltiner the soap, which is in the fonn of bars about... 

To prepare transparent Boap, either tallow, almond, or soft soaps may be nsed, but in either case the soap must he rendered perfectly free from water. The soap is first cut into thin slices or shavings, and these are then dried over a water-hath, or by hot air. Equal parts by weight of the dried soap and rectified spirit are put into a still, heated by a water-bath. Only moderate heat is applied, otherwise the spirit would pass over without dissolving the soap. It is sometimes the practice to powder the soap in a mortar after drying before treating it with the spirit, by which it becomes more readily dissolved. If it is desired to colour the soap, any colouring matter soluble in alcohol may be employed, and it is best to colour the spirit before adding it to the soap. 

Turpentiae Soap, or Starkey s Soap, is prepared as follows — Take of Venice turpentine, oil of turpentine, and carbonate of potash, of each equal parts place these in a mortar (previously warmed), and triturate them together, adding a little water, un a homogeneous mass is formed put it into a paper mould, and after a few days cut the soap into slices, and keep them in a well-stoppered bottle. 

It is of the greatest importance to the soap-maker that he should he able to estimate the exact proportions of fattj matter, alkali, and water in each boil of soap when finished and ready for sale, in order that he may determine the cost of manufacture and estimate his profit. A simple method of assaying a sample of soap is the following Soap Assay.—L To estimate Hie percentage of wot take a fair sample, say from a recently cut bar of soap, and weifh 100 nrains. Cut this into thin slices or... 

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