Bismuth subcarbonate

Bismuth subcarbonate is white powder,no smell or taste.It's relative density is 6.86,decomposes carbon dioxide and bismuth oxide at the temperature 308degree.Gradually decomposes and degenerate under the light.Undissolved in water or ethanol,easily sissolves in inorganic acid(nitric acid,hydrochloric acid),acetic acid and ammonium chloride solution,slightly dissolves in alkali metal carbonate solution. Bismuth subcarbonate is mainly used for astringent and X-ray diagnosis opacifier in mediacal industry,also can treat the gastric and duodenal ulcer,bacteria red dysentery,amoebic dysentery,acute mucosa permeable gastritis,enteritis,diarrhea,skin disease,eczema and crystal rash as well external remedy of fire wound. Quality standard:USP