Mistura Magnesii Hydroxidi, B.P.C. Magnesium Hydroxide Mixture.
Synonyms.—Cremor Magnesiae; Cream of Magnesia; Lac Magnesiae; Emulsio Magnesiae; Emulsion of Magnesia.
|Magnesium Sulphate||18.00|||||3 oz. 262 ½ gr.|
|Solution of Potassium Hydroxide||132.75|||||26 fl. oz. 264 min.|
|Light Magnesia||1.00|||||87 ½ grains|
|Water, a sufficient quantity.|
|Distilled Water||to 100.00|||||to 20 fl. ounces|
Dissolve the magnesium sulphate in 200 (40 fluid ounces) of water, add in a thin stream the solution of potassium hydroxide previously diluted with 100 (20 fluid ounces) of water, and allow the precipitate to settle; pour off the clear liquid, wash the precipitate with distilled water until the washings are free from saline taste, then transfer the precipitate to a "chamois skin" strainer, allow it to drain without pressing, add the light magnesia, mix, and diffuse the mixture in sufficient distilled water to produce the required volume. The product will contain the equivalent of about 24 grains of magnesium hydroxide in each fluid ounce.
Dose.—4 to 15 mils (1 to 4 fluid drachms).