1.The purified polysaccharides is determined by colourimetry with sulfuric acid phenol as colourimetric reagent.
测得多糖的含量为65。
2.Catalytic synthesis of phenetole by ethylation of phenol with diethyl carbonate(DEC)in fixed bed reactor was investigated.
以二乙酯(DEC)为乙基化试剂,与苯酚在气固相条件下催化合成苯乙醚。
3.The technique for preparing phenol formaldehyde resin from phenolated wood (PWF) and its characters were studied and analyzed.
本文研究了用酚化木材制备酚醛树脂的技术,并对其性能进分析。
4.The primary synthetic methods of 4-hydroxycoumarin was reviewed starting from phenol, 2-acetylsalicylic acid, methyl salicylate, and o-hydroxyacetophenone respectively.
概述了4-羟基香豆素的合成方法,重点介绍了苯酚法,乙酰水杨法,水杨甲酯法,邻羟基苯乙酮法。
5.RESULTS Zhike syrup obviously prolonged the incubation period of coughing and increasel the bronchotracheal secretion of phenol red.
结果止咳露使咳嗽潜伏期延长,使气管酚红排泌量明显增加。
6.The phenols were O-alkylated with 100% conversion and 100% selectivities using phenacyl bromide and benzyl bromide as alkylating reagents.
11.In order to get polyaryloxyphosphazene, polyphosphazene's side chlorines are directly substituted by aryloxy of phenol using triethylamine as the bind acid agent.
然后以三乙胺为缚剂,使高聚氯化磷腈直接与酚类化合物进取代反应,合成了标题高聚物。
12.Coking residuary water contains phenol and cyanogens, which contaminate water source badly. Therefore, the coking residuary water has to be dealt with and discharged.
焦化含酚、氰污水的来源很广,对水源污染严重,焦化污水必须加以处理,合格后才能排放。
13.A new camphol sandaliol was synthetized by selective alkylation of isocamphol and phenol with acidic catalyst, and following hydrogenated in the presence of Raney nickel.
本文用异龙脑与苯酚在性催化剂作用下进选择性烷基化反应,再经催化氢化还原得到龙脑檀香产品。
14.Research and development for fhe production of pyrocatechol and hydroquinone by reaction of phenol with hydrogen peroxide and percarboxylic acid as hydroxylating reagent are introduced.
着重介绍用过氧化氢和过氧化羧作羟基化剂,使苯酚羟基化生成邻苯二酚和对苯二酚的研究开发进展。
15.Compared with that of furane resin bonded sand,the feasibility of phenol resin bonded sand in forming a uniform coating layer in the inside mould surface is studied as well.
16.P - tert - octylphenol (shorten by PTOP), the alkylation product of phenol with diisobutylene(shorten by DIB), has been largely applying in varied fields such as rubbers, oil additives and so on.