フェニルヒドラジン

フェニルヒドラジンは、淡黄色から赤褐色の油状液体で、クロロホルム様の臭気を有する。中程度の揮発性を示し、融点は19.5 ℃、沸点は243 ℃である。芳香族ヒドラジンに分類され、主に汎用性の高い有機化学中間体として用いられる。その主要な工業的用途には、医薬品（例：解熱鎮痛剤）、農薬（特に殺菌剤および植物成長調節剤）、ならびに染料（特にインドール系着色料およびアゾ染料）の合成が含まれる。また、ゴム化学品、写真現像剤、および炭水化物の同定・分析に用いられる分析試薬の製造にも使用される。

In the field of pesticide production, phenylhydrazine can be used for synthesizing the intermediate 1-phenyl-semicarbazide of the organophosphorus pesticides, triazophos as well as the intermediate 1-phenyl-3, 6-hydroxy pyridazine of pyridaphenthione. It is also the intermediates of the novel bactericidal varieties, famoxadone and fenamidone. In addition, hydrazine benzene, as a raw material for organic synthesis, can also be used as the intermediates of dye and pharmaceutical industry as well as being used as an analytical reagent. The product is the intermediate of dye, pharmaceuticals and pesticides. It can be used for the production of Naphthol AS-G, drugs such as antipyrine and so on. Dissolving the phenylhydrazine in 95% ethanol and following by addition of benzaldehyde and reflux for 1 h can obtain the phenylhydrazone. Phenylhydrazone can also be used as the intermediate of organic synthesis. Phenylhydrazine is also used as an analytical reagent. As a weak base, it can be used to precipitate lead, chromium and other trivalent, tetravalent element in the form of hydroxide. It can also be used for photometric determination of aluminum, chromium, copper, molybdenum, titanium, and zirconium. It can also be used for verification of gold, iridium, molybdenum, palladium, platinum, and silver. It can be used as the reducing agent for colorimetric assay of phosphorus acid. It can also react with aldehydes, ketones and sugars to get phenylhydrazone with different melting points according which we will be able to identify these substances.

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