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Bismuth subcarbonate

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Title: Bismuth subcarbonate  
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Subject: Bismuth, Carbonates, Bismutite, Dragon's egg, Decoppering
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Bismuth subcarbonate

Bismuth subcarbonate
Other names
bismuth oxycarbonate, bismuthyl carbonate,
Molar mass 509.9685 g/mol
Appearance fine white to pale yellow-white powder
Density 6.86 g/cm3
Boiling point decomposes
NFPA 704
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
 Y  (: Y/N?)

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[1] consists of Bi-O layers and CO3 layers and is related to kettnerite, CaBi(CO3)OF. It is light sensitive.


  • Uses 1
  • Safety 2
  • References 3
  • External links 4


It is highly nanotube arrays that exhibit antibacterial properties.[3] It is also used in fireworks [4] to make Dragon's eggs. It is a constituent of milk of bismuth which was a popular digestive tract panacea in the 1930s[5]


Bismuth subcarbonate may be harmful if swallowed. It may irritate the respiratory and gastrointestinal tract.


  1. ^ Joel D. Grice (2002). "A Solution to the crystal structures of bismutite and beyerite". The Canadian Mineralogist 40 (2): 693–698.  
  2. ^ Flexible, highly radiopaque plastic material catheter - Patent 5300048
  3. ^ Rong Chen, Man Ho So, Jun Yang, Feng Deng, Chi-Ming Che and Hongzhe Sun (2006). "Fabrication of bismuth subcarbonate nanotube arrays from bismuth citrate". Chem. Commun. (21): 2265–2267.  
  4. ^ How To Make Cheaper Crackling Firework Stars (Dragon Eggs) With Bismuth Subcarbonate
  5. ^ Park & Davis Co catalog entry for milk of bismuth

External links

  • Source of common name; milk of bismuth
  • MSDS
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