Botanical name:
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 |
| Glycerin | 35.00 | | | 7 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.
