By OSKAR WIDMAN.
The author adds in small portions five parts metanitro-benzaldehyd to nine
parts of phosphorus pentachloride, avoiding a great rise of temperature.
When the reaction is over, the whole is poured into excess of cold water,
quickly washed a few times with cold water, and dissolved in alcohol. After
the first crystallization the compound melts at 65°, and is perfectly pure.
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