2. Orpiment is also called Kunlun yellow and arsenic yellow. The mineral name is also the same as that of orpiment, and its composition is As2S3. Its color is lighter than realgar, brittle. Orpiment and realgar often coexist together, and their properties are similar to realgar, and they are often used as the main ingredient of detoxification and insecticidal. It will also become arsenic after oxidation. There is also sulfur, also called sulfur, and so on. The mineral name is natural sulfur. Light yellow, very brittle, low ignition point, burning into SO2, giving off an unpleasant smell. Its taste is sour, warm, can warm the intestines and defecate, kill insects and stop itching, but also can tonify fire and help Yang. When sulfur contacts with the secretion of skin, it can form alkali sulfide, which can soften the epidermis and kill parasites. The efficacy of sulfur for external use should be related to this.
This is obviously a highly toxic drug, but these are all solid. Since the snake did not contact it, it was expelled. Why?
A: realgar is a kind of stomach poison, and snakes are very sensitive to it; but after adding alcohol, realgar can drive away snakes more effectively, because ethanol can be used as a diluent to enhance the volatilization of realgar. Therefore, realgar is usually used in wine in the mountain area, and it is also taken in the legend of the new white lady. However, it is not completely harmful. Taking medicine can cause three kinds of poison. On the contrary, I can also say that realgar and cinnabar are often used in combination to treat diseases and save many lives.