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| ??? ?? | T+,N | ||
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| ?? ???? ?? | 26/27/28-33-50/53 | ||
| ????? | 13-28-36-45-60-61 | ||
| ????(UN No.) | UN 2025 6.1/PG 2 | ||
| WGK ?? | 3 | ||
| RTECS ?? | OW0250000 | ||
| ?? ?? | 6.1(a) | ||
| ???? | II |
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Purification Methods
Wash it several times with boiling 50% EtOH and recrystallise it from 1-butanol (0.9g/L of boiling alcohol). The fine needles are insoluble in H2O but slightly soluble in cold alcohols, CHCl3 and soluble in aqueous alkalis. [Chaikin J Am Chem Soc 70 3522 1948.]?????? ?? ?? ? ???
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