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bismuth subcarbonate
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Bismuth subcarbonate Bi2O2(CO3), sometimes written (BiO)2CO3 is a chemical compound of bismuth containing both oxide and carbonate anions. Bismuth is in the +3 oxidation state. Bismuth subcarbonate occurs naturally as the mineral bismutite. Its structure consists of Bi-O layers and CO3 layers and is related to kettnerite, CaBi(CO3)OF. It is light sensitive.
==Uses==
It is highly radiopaque and for example is used as a filler in radiopaque catheters which can be seen by x-ray.〔(Flexible, highly radiopaque plastic material catheter - Patent 5300048 )〕 In modern medicine, bismuth subcarbonate has been made into nanotube arrays that exhibit antibacterial properties.〔
〕 It is also used in fireworks 〔(How To Make Cheaper Crackling Firework Stars (Dragon Eggs) With Bismuth Subcarbonate )〕 to make Dragon's eggs. It is a constituent of milk of bismuth which was a popular digestive tract panacea in the 1930s〔(Park & Davis Co catalog entry for milk of bismuth )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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