5,5-Dimethylhydantoin
Synonym(s):4,4-Dimethyl-2,5-dioxoimidazolidine;DMH;Fennosurf 300
- CAS NO.：77-71-4
- Empirical Formula: C5H8N2O2
- Molecular Weight: 128.13
- MDL number: MFCD00005266
- EINECS: 201-051-3
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-12-18 14:08:52
What is 5,5-Dimethylhydantoin?
Chemical properties
white to off-white crystals or crystalline powder
The Uses of 5,5-Dimethylhydantoin
5,5-Dimethylhydantoin is part of a group of hydantoin compounds that are being evaluated for their anticonvulsant and central nervous system antitumour properties.
Definition
ChEBI: 5,5-Dimethylhydantoin is an imidazolidine-2,4-dione.
Purification Methods
Crystallise the hydantoin from EtOH and sublime it in vacuo. [Beilstein 24 III/IV 1097.]
Properties of 5,5-Dimethylhydantoin
| Melting point: | 174-177 °C (lit.) |
| Boiling point: | 237.54°C (rough estimate) |
| Density | 1.2864 (rough estimate) |
| refractive index | 1.4730 (estimate) |
| Flash point: | 193°C |
| storage temp. | Sealed in dry,Room Temperature |
| solubility | H2O: 0.1 g/mL hot, clear |
| pka | pKa 8.1 (Uncertain) |
| form | Crystalline Powder or Crystals |
| color | White to off-white |
| Water Solubility | soluble |
| BRN | 2827 |
| CAS DataBase Reference | 77-71-4(CAS DataBase Reference) |
| NIST Chemistry Reference | 2,4-Imidazolidinedione, 5,5-dimethyl-(77-71-4) |
| EPA Substance Registry System | 5,5-Dimethylhydantoin (77-71-4) |
Safety information for 5,5-Dimethylhydantoin
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H302:Acute toxicity,oral H317:Sensitisation, Skin |
| Precautionary Statement Codes |
P280:Wear protective gloves/protective clothing/eye protection/face protection. |
Computed Descriptors for 5,5-Dimethylhydantoin
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