Liquor Carmini, B.P.C. Solution of Carmine.
Related entry: Carmine
|Carmine||6.00|||||1 oz. 87 ½ gr.|
|Solution of Ammonia||35.00|||||7 fl. ounces|
|Potassium Citrate||10.00|||||2 ounces|
|Distilled Water||to 100.00|||||to 20 ounces|
Triturate the carmine with the solution of ammonia, add the glycerin, and heat on a water-bath, with constant stirring, until the ammonia is dissipated; then cool, dissolve the potassium curate in the mixture, and add sufficient distilled water to make up to the required volume.
Solution of carmine is a suitable colouring agent for alkaline mixtures, mouth washes, lotions, etc., in the proportion of about 1 per cent.; the red colouring matter is precipitated by acids, so that a yellow colouration is produced when the solution is added to acid liquids.