| Identification | Back Directory | [Name]
1H-Imidazole-2-carboxylic acid, 4,5-dichloro- | [CAS]
64736-53-4 | [Synonyms]
4,5-Dichloro-1h-imidazole-2-carboxylic acid
1H-Imidazole-2-carboxylic acid, 4,5-dichloro- | [Molecular Formula]
C4H2Cl2N2O2 | [MOL File]
64736-53-4.mol | [Molecular Weight]
180.98 |
| Chemical Properties | Back Directory | [Melting point ]
159-160 °C (decomp) | [Boiling point ]
463.0±48.0 °C(Predicted) | [density ]
1.857±0.06 g/cm3(Predicted) | [pka]
3.28±0.10(Predicted) |
| Hazard Information | Back Directory | [Preparation]
A mixture of 137 g (1 mol) of 4,5-dichloroimidazole, 414 g (3 mol) of K2CO3 and 1,000 ml of carbon dioxide was stirred in an autoclave at 200° C. under autogenous pressure for 10 hours. The solid output was pulverized, suspended in 2 1 of water and brought to pH 3-4 with concentrated hydrochloric acid while being cooled with ice. The resulting precipitate was filtered off and recrystallized from water to give 136 g (75%) of 4,5-dichloroimidazole-2-carboxylic acid; mp. 240° C. (dec.).
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