In benzene, re-crystallization products to buff aciculae, commodity to pale yellow.

在苯中重结晶的产品为浅黄色针状晶体，商品为浅黄色或土黄色。

Molecular weight determinations on the purified material were conducted in benzene solutions by cryoscopic method.

用冰点法，在苯溶液中对纯的物质分子量测定。

Separate the benzene layer with a separatory funnel.

用分液漏斗分出苯层。

Benzene hexachloride is commonly called BHC .

六氯化苯通常称为bhc。

30. Benzene hexachloride is commonly called BHC.

六氯化苯通常称为BHC。

The free radical polymerization of VOZO in benzene solution results poly 2 vinyl 2 oxazoline(PVOZO).

对合成过程中的溶剂及分离等问题讨论。

In this reaction,besides substitution products thiophenol etc,the reduction product benzene is formed.

反应中，除生成笨硫酚等取代产物外，还生成还原产物苯。

Formaldehyde, benzene, ammonia and radioactive pollution' superscale have seriously affected people's health.

甲醛、苯、氨气和放射性污染超标经严重影响人们的健康。

Dichlorofluorobenzene is prepared by diazotizating of 2,4-dichloro aniline and substituting of 2,4-dichloro diazo benzene with fluorinion.

在此概述由2,4-二氯苯胺经过重氮化、置换制得2,4-二氯氟苯的生产新工艺,产品纯度达到99。

OBJECTIVE To establish a method for detecting benzene series from macro-reticular resin in Peristrophe roxburghiana extraction.

目的检测红丝线提取物中大孔树脂残留物的量。

The common absorption function of benzene and phynol in water on the series of organic soil is studied.

研究水中苯和苯酚在系列有机膨润土上的共作用。

Methyl 1 phenyl Propanone was synthesized with benzene and iso butyryl chloride by using anhydrous aluminium trichloride as catalyst.

由苯与异丁酰氯在无水三氯化铝作催化剂的条件下制备苯基异丙基酮。

A strain may be defined as an organic compound containing a benzene ring plus a chromophore and auxochrome group.

染料定义为含有苯环与呈色官能基与辅助成色官能基的化合物。

The transalkylation of polyethylbenzene, mainly diethylbenzene and triethylbenzene, with benzene catalyzed by tungstophosphoric acid has been studied in stirred autoclave.

采用搅拌高压釜,以磷钨酸为催化剂,研究苯与多乙苯的烷基转移反应,多乙苯主要是二乙苯和三乙苯。

The benzene ring and alkene structural group are much more stable than structural group of sulfoacid for the carbonifying process of polystyrene.

在碳化过程中，聚苯乙烯阳离子交换树脂的苯环结构和烯烃基团比磺酸基团稳定。

The enantioselectivity of N-dodecanoyl-L-proline-3,5-dimethyl-anilide is also good, but the basic line fluctuates strongly due to containing benzene ring in its molecular structure.

虽然用N-十二酰基-L-脯氨酸-3,5-二甲基苯胺作添加剂，手性选择性也较好，但由于含有苯环，紫外收增强，基线波动严重。

It was shown that the energy of interaction between the polyoxyethylene and the noncrystalline SiO2 surface was below than hexadecyl accumbent benzene sulfonate.

据此分析，聚氧化乙烯能在非晶质SiO2表面形成稳定且部分替换十六烷基对苯磺酸钠。

This paper has studied the phthalocyanin complex of Cobalt synthesized by benzene bitter wine-urea law,and after depuration,an infrared, ultra-violet spectrograph determination is carried.

文章主要研究苯酐-尿素法合成酞菁钴、经提纯并对其红外、紫外光谱测定、合成及表征结果表明,红外光谱表征推测结构可靠,紫外光谱分析表明有特征收峰之处。

A survey of the health condition of 308 cases of workers exposed to benzene, toluene, xylol and mixed derivatives of benzene is presented.

本文报告308例苯、甲苯、二甲苯及混合苯作业工人的健康状况调查结果。

The separation of three-component system of cyclohexane,cyclo-hexene and benzene by extract rectification with a mixed solvent,comprising hexyl dicyanide and dimethyl acetylamine has been studied.

选用己二腈-二甲基乙酰胺组成的混合溶剂，对环己烷、环己烯和苯组成的三元体系萃取精馏。