The useful Bismuth subcarbonate

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Bismuth subcarbonate is used as filler in radiopaque catheters seen by x-ray and used in fireworks to make Dragon's eggs. In modern medicine, it has been made into nanotube arrays that exhibit antibacterial properties. In the 1930s, it is a constituent of milk of bismuth which was a popular snake oil. It is highly radiopaque and for example is used as filler in radiopaque catheters which can be seen by x-ray. In modern medicine, bismuth subcarbonate has been made into nanotube arrays that exhibit antibacterial properties. It is also used in fireworks to make Dragon's eggs. It is a constituent of milk of bismuth which was a popular snake oil in the 1930s. Bismuth subcarbonate may be harmful if swallowed. It may irritate the respiratory and gastrointestinal tract. At Ph8.5 ~ 9.0, temperature 50 ~ 55°C,and reaction time 40 min, the reaction liquid will get to be Basic bismuth carbonate, and then by washing, centrifugal separation, drying, grinding, obtained Bismuth subcarbonate.