总维生素C、还原型维生素C含量的测定采用2，4二-硝基苯肼法。
The content of total vitamin C and reductive ascorbic acid were determined by 2,4-dinitrobenzene hydrazine.
介绍对尿素法水合肼合成工艺、冷冻法水合肼提纯工艺进行的优化，和对丙酮汽提法提纯水合肼进行的尝试。
It is introduced that how the optimization of the hydrazine hydrate synthetic technology by urea method and the hydrazine hydrate purification technology by cooling method has been carried out.
介绍了过氧化氢法生产水合肼过程中中间体酮连氮合成用催化剂的研究进展。
Research progresses of catalysts for synthesizing ketazine intermediate in the production process of hydrazine hydrate by method of hydrogen peroxide are introduced.
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