Bismuth subcarbonate
| Bismuth subcarbonate | ||
|---|---|---|
| Other names bismuth oxycarbonate, bismuthyl carbonate, | ||
| Identifiers | ||
| CAS number | 5892-10-4 | |
| PubChem | 16683095 | |
| Properties | ||
| Molecular formula | Bi2O2(CO3) | |
| Molar mass | 509.9685 g/mol | |
| Appearance | fine white to pale yellow-white powder | |
| Density | 6.86 g/cm3 | |
| Boiling point | decomposes | |
| Solubility in water | insoluble | |
| Hazards | ||
| NFPA 704 |
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 (verify) (what is: / ?)Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa) | ||
| Infobox references | ||
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
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
- ↑ 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.
- ↑ Flexible, highly radiopaque plastic material catheter - Patent 5300048
- ↑ 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.
- ↑ How To Make Cheaper Crackling Firework Stars (Dragon Eggs) With Bismuth Subcarbonate
- ↑ Park & Davis Co catalog entry for milk of bismuth
External links
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