甲醛

The oxidation of p-nitrotoluene-2-sulfonic acid to prepare 4, 4'-dinitrostilbene-2, 2'-disulfonic acid was monitored, and the mechanism for the formation of by-products 4-nitrobenzaldehyde-2-sulfonic acid and 4-nitro-2-sulfobenzonic acid was suggested.

跟踪了对硝基甲苯邻磺酸制备4，4'-二硝基二苯乙烯－2，2'-二磺酸的过程，推测了4-硝基苯甲醛2-磺酸钠与4-硝基苯甲酸2-磺酸钠杂质的生成机理。

Recently, study on ion-selective electrodes with anti-Hofmeister selectivity pattern is an important and interesting project in the fields of electrochemistry and electroanalytical chemistry.

研究发现，以呋喃甲醛甘氨酸合铜为载体的电极对水杨酸根离子有高的选择性并呈现出反Hofmeister选择序列行为。

An optimum condition for analysis of p-fluorobenzaldehyde sample using electrosynthesis was investigated by method of hydroxyamine hydrochloride .

制定了盐酸羟胺法测定电合成芳醛的条件，并用该方法测定了电合成对氟苯甲醛样品，方法的回收率为99.97%～100.4%，相对标准偏差为0.084%～0.42%，测定结果和气相色谱分析结果基本一致。

The method is simple and rapid, and it has been applied to the determination of benzaldehyde and benzoic acid in electrosynthetic samples with satisfactory results. The recovery was between 91.9% to 106.5% and 95.8% to 99.2% respectively, and the relative standard deviation was less than 0.15% and 0.92%, respectively.

本法简便、快速，应用干多个电合成产品中苯甲醛和苯甲酸含量的测定，均获得比较满意的结果，其加标回收率分别在91.9%-106.5%和95.8%-99.2%之间，相对标准偏差分别小于0.15%和0.92%。

The effects of formaldehyde on estrous cycle and ovary of female mice［J］.

甲醛对雌性小鼠动情周期及卵巢的影响［J］。

The results show that among the acetoacetonate complexes,Co_3 has the best catalytic activity.The optimum reaction conditions were as follows:0.764 mmol of Co_3,mole fraction of ethanal 10%based on the substrate,room temperature,oxygen pressure 2 MPa,reaction time 11h and solvent acetonitrile.Under these conditions,13.3%p-chlorobenzaldehyde was obtained with 15.3%conversion and 87.2%selectivity.The oxidation can also be carried out without solvent with 8.1%conversion,89.1%selectivity and 7.2%yield respectively.

在金属配合物中Co_3的催化性能最好，在其用量为0.764 mmol、乙醛用量为反应物物质的量的10%、氧气压力为2MPa时，以乙腈为反应介质，室温下反应11h，反应的转化率和选择性可达15.3%，87.2%，对氯苯甲醛收率可达13.3%；反应也可在无溶剂时进行，此时反应的转化率、选择性及醛的收率分别为：8.1%，89.1%，7.2%。

Other materials,such as sulfuric acid, caustic soda and ethanediol, can be purchased form the factory nearby.

聚甲醛生产中其他原料如硫酸、烧碱和乙二醇可在周边生产厂家采购。

Catalytic synthesis of ketal by urushiol-formaldehyde neodymium polymer from cyclohexanone and ethanediol was studied.

以环己酮和乙二醇为原料，漆酚缩甲醛钕聚合物为催化剂合成了环己酮乙二醇缩酮。

The promotion action of ionic liquid as an accelerant in synthesizing benzaldehyde ethanediol acetal and benzaldehyde propanediol acetal was studied.

摘要以离子液体为促进剂，强酸性聚苯乙烯732催化了苯甲醛与两种二元醉的缩醛反应。

But, heat transfer fluids can also be used for cooling strongly exothermal processes, such as occur in the synthesis of ethylene oxide, aniline or formaldehyde.

同时，该导热油也能给需要冷却的工艺路线迅速导出热量，例如应用于EO/苯胺/甲醛等的合成。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。