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3-Nitrobenzoic acid : ウィキペディア英語版 | 3-Nitrobenzoic acid
|Section2= |Section3= |Section8= }} 3-Nitrobenzoic acid is an organic compound with the formula C6H4(NO2)CO2H. It is a precursor to 3-aminobenzoic acid, which is used to prepare some dyes.〔Takao Maki, Kazuo Takeda "Benzoic Acid and Derivatives" in Ullmann's Encyclopedia of Industrial Chemistry 2002, Wiley-VCH, Weinheim. .〕 ==Preparation and properties== It is prepared by nitration of benzoic acid, together with significant amounts of 2-nitrobenzoic acid. With a p''K''a of 3.47,〔 3-nitrobenzoic acid is about 10x more acidic than benzoic acid.
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