Direct oxidation of toluene is a simple and cheap production technology of benzaldehyde.

The phenytoin sodium is prepared by means of condensation, oxidation and ringclosure condensation from benzaldehyde.

以苯甲醛为原料,通过缩合 、 氧化、关环缩合等多步合成苯妥英钠.

Benzaldehyde was prepared by basic hydrolysis of cassia leaf oil using phase transfer catalyst.

在相转移催化条件下,从桂叶油出发通过碱性水解制备天然苯甲醛.

Pitch resin was synthesized from benzaldehyde and heavy oil residue.

利用纯芳烃原料和重质渣油研制的沥青树脂具有优良的耐热性.

Natural benzaldehyde is prepared by hydrolysis cassia leaf oil.

从桂叶油出发,通过碱性水解制备天然苯甲醛.

Based on the reactions , this paper reports research for synthesizing benzaldehyde.

简要介绍以此类方法对合成苯甲醛的研究.

The intrinsic viscosities reported were determined in benzene at 25 ℃.

特性粘数是在苯中于25℃测定的.

Aicohol mutipurpose glycollic hexanl mutipurpose benzene , toluene and xylene.

醇类众用乙醇、异丙醇,苯类众用甲苯、二甲苯.

This can supply fundamental data for the industrial simulation of benzene alkylation.

可以为苯烷基化反应的工业模拟提供重要的基础数据.

The dispersant are alcohol, ether, alcohol-benzene component solvent or non-proton polar solvent.

分散剂为醇 、 醚 、 醇 - 苯混合溶剂或 非 质子极性溶剂.

Crude benzene is byproduct in the production of coke.

粗苯是焦炭生产的副产品.

Numerous constituents are toxins such as ammonia, benzene, and nicotine.

其中许多都是有害物质,如氨, 苯和尼古丁.

There are two method to measure the weight ratio of crude benzene.

测定粗苯重量比,有色谱法和蒸馏法两种方法,其中蒸馏法为仲裁方法.

The application of catalytic distillation reactor in benzene alkylation process is presented.

同时介绍了催化蒸馏反应器在苯烷基化工艺中的应用.

Environmental catalytic material of iron nitride nanoparticle was synthesized by Benzene-thermal method.

采用苯热法合成环境催化材料纳米氮化铁.

In benzene or ethyl acetate solution rates increase linearly with methyl methacrylate concentration.

在苯或乙酸乙酯溶液中其衰减速度随甲基丙烯酸甲脂浓度呈直线地增大.

Ferric Chloride alone gives polymer with benzene.

三氧化铁可单独催化苯的聚合.

Resonance theory says that benzene can be represented by two contributors.

共振论认为苯能用两个参与体表示.

The benzene ring is also seen in other compounds.

苯环在其他化合物中也可以看见.

The benzene vaporized and formed a huge cloud of gas.

苯蒸发了，形成了一大团气体。

Pay attention to fire prevention when recirculating and eluting with petroleum benzin.

用石油醚回流洗脱时应注意防火.