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- diacetyl hydrazine 二乙酰肼
- An acyl derivative of hydrazine. 酰肼一种由肼衍生而来的酰
- Reaction with hydrazine forms the hydrazidine. 与肼反应时,形成肼定。
- Diacetyl is an important matter affecting the flavor of beer . 双乙酰是影响啤酒风味的重要物质。
- Hydrazine perchlorate and lithium perchlorate form two eutectics. 过氯酸肼和过氯酸锂形成两种低共熔物。
- Byname: Hydrazine monohydrate.Molecular formula: H2N:NH2.H2O. 产品英文名：Hydrazine;hydrate产品别名： 水合联氨 分子式：H2N:NH2.
- The hydrazine sulfate has been prepared by the hydrazine hydrate. 首先用尿素氧化法制备水合肼,然后加入浓硫酸得产物硫酸肼。
- Diacetyl is one of the important indices in beer quality management. 双乙酰是啤酒品质管理的重要指标之一。
- Diacetyl is also an important effect substance on the flavour of beer. 双乙酰也是影响啤酒风味的重要原因之一。
- The material is readily prepared by reaction of formaldehyde and hydrazine. 这种物质很容易由甲醛和肼反应而得到。
- The craft, a spy satellite, was carrying around 450kg of toxic hydrazine fuel. 这颗间谍卫星大约运载着 450 千克有毒联氨燃料。
- The hydrosulfite in beer would cause deviation of the determination of diacetyl content in beer by EBC method. 使用邻苯二胺(EBC法)测定啤酒中双乙酰含量时,啤酒中存在的亚硫酸氢盐会影响测定结果的准确性。
- We study the affection for the EBC method determination of diacetyl in beer of all kinds of coefficiant of variation and obtain valuable results. 研究各种操作条件对EBC分析法测定啤酒中双乙酰的影响，得到了较有价值的结果。
- Diacetyl(DA) is one of the most common off-flavors in beer fermentation, affects the quality of beer. 双乙酰(diacetyl)是啤酒发酵中的不良风味物质,产生令人不愉快的反应,可以缩短啤酒熟化周期,提高生产效率,对啤酒工业来说极有经济价值。
- Ethyl nitrite and 2-butanone are condensed to give diacetyl monooxime,which canbe hydrolysed to form diacetyl. 本文用亚硝酸乙酯与2-丁酮缩合制备双乙酰-肟。
- Recently the reactivity of nitric esters in the presence of hydrazine has been investigated. 人们近来研究了有肼存在时硝酸酯的反应性。
- Main fermentation time including diacetyl reduction lasts 3-5 days and storage time 1-3 weeks. 主发酵时间3-5天（包括双乙酰还原），后熟时间1-3周。
- It was found that an increase in the stability of the combustor was obtained simply by gelling the hydrazine. 发现简单地通过肼胶化的方法可使燃烧室的稳定性提高。
- A rapid and reliable analytical method for the detection of diacetyl and other vicinal Diketones in beer was described. 该文介绍了一种快捷、可靠的测定啤酒中双乙酰含量的分析法。
- In this paper, the progress of study on the formation mechanism and metabolic control of diacetyl was reviewed briefly. 本文简要综述了啤酒生产中双乙酰的形成机制和代谢调控研究进展。
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