Soap of Subacetate of Lead. Syn. Sapo saturni (Bristol Infirmary). Prep. Boil 1 lb. of white soap in 4 pints of rain water; when the soap is dissolved add 1 oz. of camphor pulverised with spirit, and mixed with 2 oz. of liquid subacetate of lead, stir the whole till cold.
Soap, Sul′phuretted. Syn. Sapo sulphuris, Sapo sulphuratus, L. Prep. (Sir H. Marsh.) From white soap, 2 oz.; sublimed sulphur, 1⁄4 oz.; beaten to a smooth paste in a marble mortar with 1 or 2 fl. dr. of rectified spirit strongly coloured with alkanet root, and holding in solution otto of roses, 10 or 12 drops. In itch and various other cutaneous diseases.
Soap, Tar. Syn. Sapo picis liquidæ, Sapo
PICEUS, L. Prep. From tar, 1 part; liquor of potassa and soap (in shavings), of each 2 parts; beat them together until they unite. Stimulant. Used in psoriasis, lepra, &c.
Soap, Tur′pentine. Syn. Starkey’s soap; Sapo terebinthinæ, S. terebinthinatus, L.; Savon térébinthine, Fr. Prep. (P. Cod.) Subcarbonate of potash, oil of turpentine, and Venice turpentine, equal parts; triturate them together, in a warm mortar, with a little water, until they combine; put the product into paper moulds, and in a few days slice it, and preserve it in a well-stopped bottle.
SOAPS (Toilet). Of toilet soaps there are two principal varieties:—
1. (Hard.) The basis of these is, generally, a mixture of suet, 9 parts, and olive oil, 1 part, saponified by caustic soda; the product is variously scented and coloured. They are also made of white tallow, olive, almond, and palm-oil soaps, either alone or combined in various proportions, and scented.
2. (Soft.) The basis of these is a soap made of hog’s lard and potash, variously scented and coloured.
3. Guido Schnitzer, writing to ‘Dingler’s Journal’ (cciii, 129-132),[173] says that the use of sodium silicate (ordinary water-glass) has proved of great value in the manufacture of palm oil and cocoa-nut oil soaps, as it increases their alkalinity, and gives to them greater hardness and durability. It is for these reasons the silicate is much used in the manufacture of toilette soaps.
[173] ‘Journ. of Chem. Soc.,’ new series, vol. x.