Plaster of Soap (Camphorated). (P. Cod.) Syn. Emplastrum saponis camphoratum. Soap plaster, 10 oz.; camphor, 48 gr.
Plaster of Soap (Compound). Syn. Emplastrum saponis compositum, E. adhærens, L. Prep. (Ph. D. 1826.) Resin plaster, 3 oz.; soap plaster, 2 oz.; melted together.
Obs. Less emollient, but more stimulant, than the simple plaster. The ‘EMPLASTRUM È MINIO CUM SAPONE’—Ph. E. 1744 was made by melting 1 part of soap with 5 parts of minium plaster. Neither of the above must be put into water. See Plaster of Resin, Ph. D.
Plaster of Soap-ce′rate. Syn. Emplastrum cerati saponis (B. P.). Prep. 1. From soap cerate, heated by means of a water bath until all the moisture is evaporated. Sometimes 2 or 3 dr. each of powdered mastic and gum ammoniacum are added for each pound of
cerate. The product is generally spread whilst still warm. Said to be suppurative, resolvent, cooling, and desiccative. See Cerate (soap).
2. (B. P.) Hard soap, 10; beeswax, 121⁄2; oxide of lead (in powder), 15; olive oil, 20; vinegar, 160; boil the vinegar with the oxide over a slow fire, or by a steam bath, constantly stirring them until they unite; then add the soap and boil again in a similar manner until all the moisture is evaporated; lastly, mix with the wax previously dissolved in the oil, and continue the process till the product takes the consistence of a plaster.
Plaster of Squill, Compound. Syn. Emplastrum scillæ compositum. Prep. Galbanum, 1⁄2 oz.; soap, 1⁄2 oz.; litharge plaster, 2 oz.; melt together, and add opium, 1 dr.; ammoniacum, 1⁄2 oz.; vinegar of squills, 3 oz., mixed together; keep them over the fire constantly stirred till they are incorporated.
Plaster, St Andrew’s. Prep. From yellow resin, 8 oz.; gum elemi, 2 oz.; Bordeaux turpentine and oil of the bay-laurel, of each 1 oz.; melted together by a gentle heat. A stimulant, resolvent, and adhesive plaster, once supposed to possess extraordinary virtues.
Plaster, Stick′ing. See Plaster, Court, Plaster of Resin, &c.
Plaster, Stom′ach. See Plaster, Aromatic, &c.