| Chemical Properties | Back Directory | [Melting point ]
38°; mp 40-41° (Morley); mp 24-25° | [Boiling point ]
bp0.35 114° | [density ]
1.1509 (rough estimate) | [refractive index ]
1.6231 (estimate) | [pka]
2.37(at 20℃) |
| Hazard Information | Back Directory | [Definition]
ChEBI: An azaarene that is the 1,2-diaza analogue of naphthalene. The parent of the class of cinnolines. | [Purification Methods]
It is distilled at high vacuum, then recrystallised from pet ether. Keep it under N2 in sealed tubes in the dark at 0o. The hydrochloride [5949-24-6] M 166.6 crystallises from EtOH/Et2O and has m 156-158o (yellow monohydrate), and dehydrates on sublimation at 110-115o/3mm. The picrate has m 196-196.5o. [Beilstein 23 H 173, 23 III.IV 1217.] |
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Energy Chemical
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A.J Chemicals
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