Bismuth subcarbonate

Bismuth subcarbonate
Names
Other names
bismuth oxycarbonate, bismuthyl carbonate,
bismutite
Identifiers
5892-10-4 YesY
PubChem 16683095
Properties
(BiO)2(CO3)
Molar mass 509.9685 g/mol
Appearance fine white to pale yellow-white powder
Density 6.86 g/cm3
Boiling point decomposes
insoluble
Hazards
NFPA 704
Flammability code 0: Will not burn. E.g., water Health code 1: Exposure would cause irritation but only minor residual injury. E.g., turpentine Reactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g., liquid nitrogen Special hazards (white): no codeNFPA 704 four-colored diamond
0
1
0
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Bismuth subcarbonate (BiO)2CO3, sometimes written Bi2O2(CO3) 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

It is highly radiopaque and for example is used as a filler in radiopaque catheters which can be seen by x-ray.[2] In modern medicine, bismuth subcarbonate has been made into 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]

Safety

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

References

  1. ↑ Joel D. Grice (2002). "A Solution to the crystal structures of bismutite and beyerite". The Canadian Mineralogist 40 (2): 693–698. doi:10.2113/gscanmin.40.2.693.
  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. doi:10.1039/b601764a. PMID 16718324.
  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

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