专利号:EP-0148126-A2 优先权日:1983-12-23 标题:Process for the isolation of pure 1-nitroanthraquinone from nitro-anthraquinone mixtures 发明人:SOMLO TIBOR DR 权利人:CIBA GEIGY AG 摘要:A process for the isolation of pure 1-nitroanthraquinone from nitroanthraquinone mixtures is described. The crude 1-nitroanthraquinone is then suspended in a polar aprotic solvent, the water content of which is at most 20% by weight, and the suspension is treated with an alkali metal hydroxide with thorough mixing at a temperature of from -10 ° C. to + 60 ° C. The by-products go into solution and the pure 1-nitroanthraquinone is filtered off. 1-nitroanthraquinone is an important intermediate for dye synthesis and is used, for example, to manufacture vat dyes.
摘要:Schafer, E. W., Jr., W. A. Bowles Jr., and J. Hurlbut. 1983. The acute oral toxicity and repellency and hazard potential of 998 chemicals to one or more species of wild and domestic birds. Archives of Environmental Contamination and Toxicology 12:355-382. https://www.aphis.usda.gov/ws/nwrc/chem-effects-db/Q_schafer832.pdf