Science Fair Project Encyclopedia
Allantoin
| Allantoin | |
| Chemical name (2,5-Dioxo-4-imidazolidinyl) urea | |
| General | |
|---|---|
| Chemical formula | C4H6N4O3 |
| Molecular weight | 158.1164 g/mol |
| Appearance | ? |
| CAS number | 97-59-6 |
| MSDS | Allantoin MSDS |
| SMILES | O=C1C(NC(=O)N1)NC(=O)N |
| Other names | |
| |
| Physical properties | |
| Density and phase at STP | ? g/cm3 (?) |
| Solubility | ? in ? |
| Specific gravity | ? |
| Crystal structure | ? |
| pH (10% solution with water) | ? |
| Acidity constant (pKa) | ? |
| Thermal decomposition | ? °C (? K) |
| Phase behavior | |
| Melting point | 239 °C |
| Boiling point | ? °C (? K) |
| Triple point | ? K (? °C) ? bar |
| Critical point | ? K (? °C) ? bar |
| Heat of fusion (ΔfusH) | ? kJ/mol |
| Entropy of fusion (ΔfusS) | ? J/mol·K |
| Heat of vaporization (ΔvapH) | ? kJ/mol |
Allantoin is a by-product of uric acid used as an anti-irritant in cosmetic products. Its chemical formula is C4H6N4O3.
Synonyms
- ureidohydantoin
- glyoxyldiureide
- hemocane
- (2,5-dioxo-4-imidazolidinyl)-urea
- 5-ureidohydantoin
10-26-2009 08:16:03
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details