Pasta Methylis Salicylatis Composita, B.P.C. Compound Methyl Salicylate Paste.
|Methyl Salicylate, by weight||50.00|||||8 ounces|
|Menthol||10.00|||||1 oz. 262 ½ gr.|
|Stearic Acid||10.00|||||1 oz. 262 ½ gr.|
|Sodium Carbonate||1.20|||||54 grains|
|Distilled Water, a sufficient quantity|
Melt the stearic acid on a water-bath, add the sodium carbonate dissolved in the glycerin and 4 (300 minims) of hot distilled water, stir until effervescence ceases, heat until a clear liquid is obtained, and make up the weight to 40 (6 ounces 175 grains) with warm distilled water; pour the mixture into a wide-mouthed bottle containing the methyl salicylate, in which the menthol has been dissolved, shake until a creamy product is obtained and transfer to collapsible tubes.