Iodal
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| Names | |
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| IUPAC name
triiodoethanal
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| Other names
triiodoacetaldehyde
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| Identifiers | |
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CompTox Dashboard (EPA)
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| Properties | |
| C2HI3O | |
| Molar mass | 421.742 g·mol−1 |
| Appearance | pale yellow liquid or solid |
| reacts to form a soluble hydrate | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Iodal, or triiodoacetaldehyde, is a halogenated derivative of acetaldehyde with the chemical formula I3CCHO, it is analogous to chloral and bromal. It is described as a pale yellow liquid with a pungent odour by Leopold Gmelin. It is decomposed to iodoform by potash.[1] Iodal was discovered and named in 1837.[2]
Iodal is synthesised from ethanol and iodine with concentrated nitric acid as the catalyst.[1] Its hydrate was described as water-soluble, white silky crystals.[3] Like most iodine compounds, Iodal is unstable under sunlight and gives off iodine over time.
References
[edit]- ^ a b Iodal, Gmelin, L. (1855). Hand-book of Chemistry: Organic chemistry. UK: Cavendish Society. pages 186-187
- ^ "Iodal" in Intelligence and Miscellaneous Articles, London and Edinburgh Philosophical Magazine and Journal of Science (1837)
- ^ Iodal in Chemical Notices from Foreign Sources, The Chemical News: With which is Incorporated the Chemical Gazette: a Journal of Practical Chemistry in All Its Applications to Pharmacy, Arts, and Manufactures. (1862). UK: C. Mitchell and Company.
