Bismuth Subcarbonate

分子式Molecular formula: (BiO)2CO3·1/2H2O

分子量Molecular weight:518.976

形状
：碱式碳酸铋为无味无臭的白色粉末

。相对密度6.86
，在308℃分解成二氧化碳和氧化铋


。遇光慢慢分解变质
。不溶于水
、乙醇




，易溶于无机酸（硝酸、盐酸）和浓醋酸
。也溶于氯化铵溶液中

，微溶于碱金属碳酸盐溶液
。

用途：用于医药工业作收敛剂、X射线诊断遮光剂
，可治疗胃及十二指肠溃疡
、细菌性赤痢
、阿米巴痢疾
，急性粘膜渗透性胃炎、肠炎和腹泻



、皮肤病，湿疹，汗疹

，火伤外用药。

Description:Bismuthsubcarbonate is the the white powder,no smell or taste.Its relativedensity is 6.86,decomposes carbon dioxide bismuth oxide at thetemperature 308℃.Graduallydecomposes and degenerate under the light.Undissolved in water orethanol,easily dissolves in inorganic acid(nitric acid,hydrochloricacid),acetic acid and ammonium chloride solution,slightly dissolves inalkali metal carbonate solution.

Usage:Asastringent and X-ray diagnosis opacifier in medical industry,also cantreat the gastric and duodenal ulcer,bacteria red dysentery,amoebicdysentery,acute mucosa permeable gastritis,enteritis,diarrhea,skindisease,eczema and crystal rash as well external remedy of fire wound.

质量标准 Quality standard:USP27/中国药典2005年版CP2005