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

用冰点法,在溶液中对纯的质进行了分子量测定。

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

中重结晶的品为浅黄色针状晶体,商品为浅黄色或土黄色。

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

甲醛、、氨气和放射性污染超标已经严重影响了人们的健康。

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

合成过程中的溶剂及分离等问题进行了讨论。

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30. Benzene hexachloride is commonly called BHC.

六氯化通常称为BHC。

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Benzene hexachloride is commonly called BHC .

六氯化通常称为bhc。

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Separate the benzene layer with a separatory funnel.

用分液漏斗分出苯层。

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

反应中,除生成笨硫酚等取生成

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It was found that the compounds are adsorbed on the Ag surface through the carboxyl oxygen atoms, the benzene adopts acclivitous conformation, others lie low on the Ag surface.

在银溶胶表面上,羧基氧原子与银形成化学建,苯环是稍微倾斜地吸附在银胶面上,其它部分则平躺吸附于银溶胶表面。

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But for benzene, when treated with SDM-A there was a turning point in its adsorption isotherm, which corresponding to the dividing point between monomolecular and multimolecular layer adsorption.

在用SDM-A处理的吸附时,出现折线形的吸附等温线,折线的转折点正好是单分子层吸附与多分子层吸附的分界点。

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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、环己烯和组成的三元体系进行了萃取精馏。

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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.

文章主要研究了苯酐-尿素法合成酞菁钴、经提纯并对其进行红、紫光谱测定、合成及表征结果表明,红光谱表征推测结构可靠,紫光谱分析表明有特征吸收峰之处。

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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表面形成稳定吸附且部分替换十六烷基对苯磺酸钠。

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

本文报告了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。

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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。

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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,紫吸收增强,基线波动严重。

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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,研究了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。

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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

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

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。

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

研究了水中和苯酚在系列有机膨润土上的共同吸附作用。

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空中英语教室:中级版(2024年)

That same year, Faraday also discovered the petroleum-based chemical benzene, which is used in the manufacture of plastics as well as other products.

同年, 法拉第还发现石油基化学品,该物质被广泛应用于塑料制造其他产品中。

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Asap SCIENCE 精选

In other words, your gas stove is potentially releasing just as much benzene as a cigarette, making them akin to secondhand smoke.

换句话说,你的燃气在关闭时可能释放的与香烟相当,使得它们像二手烟一样。

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TED演讲(音频版) 2014年4月合集

Well, I decided to be neighbors to a place called Rubbertown. They manufacture plastics. They use large quantities chloroprene and benzene.

嗯,我决定在邻近一个叫Rubbertown的地方落脚。他们生产塑胶制品,使用大的氯丁二烯还有

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Scishow 精选系列

The plants were put into sealed containers, and the air pumped full of chemicals including benzene and formaldehyde.

这些植物被放进密封容器中,气体中充满化学物质,如苯和甲醛。

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Asap SCIENCE 精选

Because even when your gas stove isn't running, research has shown that they can still emit toxic compounds like benzene, which is a carcinogen, and trace quantities of 21 other chemicals considered hazardous.

因为研究表明,即使你的煤气不点燃,它们仍然会释放出有毒化合物,如致癌物质,以的其他 21 被认为有害的化学物质。

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Scishow 精选系列

The study found the majority of the plants included in the experiment removed much of the benzene and formaldehyde from the containers.

该研究发现实验中的大部分植物清除容器内的大和甲醛。

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Asap SCIENCE 精选

So the latest research has found that simply having a gas stove in your home that's off can leave levels of benzene as high as if you had a smoker in your home.

最新的研究发现,只要家中的煤气处于关闭状态,的含就会和家中的吸烟炉一样高。

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Scishow 精选系列

Sodium benzoate, for example, has been found to react with ascorbic acid — aka Vitamin C — to produce benzene, a hydrocarbon that's known to cause cancer.

例如,研究发现苯甲酸钠与抗坏血酸——也就是维生素 C——反应产生,而苯是一已知会导致癌症的碳氢化合物。

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Huberman Lab

And then I'll remember that this was something that came to me in a dream the night before, none of which is significant as the benzene ring or the periodic table or the kind of works that Rick has produced.

然后我会想起这是前一天晚上梦到的东西,这与苯环或周期表或里克创作的那作品相比都不算什么。

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PBS人体科学

Instead of having more hydrogen atoms than carbon atoms, like most hydrocarbons, benzene has the same number of hydrogen and carbon atoms: 6 and 6.  What strange molecular structure could let these atoms fit together?

不像大多数碳氢化合物那样拥有比碳原子更多的氢原子,而是具有相同数的氢原子和碳原子:6 和 6。什么奇怪的分子结构可以让这些原子结合在一起?

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经济学人 Science and technology

The gene they picked was forsytochrome P450 2E1 a mammalian enzyme that oxidizes a wide range of volatile organic compounds, including benzene, chloroform trichloroethylene and carbon tetrachloride With the help of a bacterium.

他们选择的基因是哺乳动物的一能够氧化多挥发性有机化合物的酶——细胞色素P450 2E1,包括、氯仿、三氯乙烯和四氯化碳。 在一细菌的帮助下。

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纽约杂志(视频版)

In L.A. County, over half a million people live within a half-mile of an active oil well, which spews dangerous chemicals like benzene into the air.

在洛杉矶县,超过 50 万人居住在一口活跃的油井半英里范围内,这些油井将等危险化学物质排放到空气中。

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SciShow 合集

That was unexpected, because D. aromatica is good at breaking down compounds like benzene and toluene, which are often used in chemical solvents.

这真是出乎意料,因为脱氯芳香族细菌擅长分解苯和甲苯之类的合物, 这些化合物常用于化学溶剂。

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TED演讲(音频版) 2023年11月合集

Recent studies indicate that gas ovens, gas heating systems in our home leak benzene, they leak methane, they leak nitrogen dioxide.

近期研究表明,家中的燃气烤箱和燃气供暖系统会泄漏苯、烷和二氧化氮。

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Knowable

The small molecules that X-ray crystallographers had worked on first, things like benzene and sugar rings, contained fewer than 50 atoms.

X射线晶体学家最初研究的小分子,如苯和糖环,所含原子数少于50个。

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Real Life Ghost Stories

I was up on time and well into my studies by 4am, revising an organic chemistry chapter on benzene derivatives.

我凌晨四点还在熬夜学习,已经深入钻研有机化学中苯的衍生物这一章。

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诉讼双雄 第1季

It's got elevated levels of dibutoxyethanol, methane, and benzene.

亚乙基二醇二丁基 甲烷和的含,严重超标。

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Crash Course 综合篇

And there's anthracene, with three benzenes, which is probably the dye that's making your blue jeans blue.

还有蒽,含有三个, 这可能是让你的蓝色牛仔裤变蓝的染料。

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Crash Course 综合篇

The simplest aromatic hydrocarbon (and one of the most common) is benzene (C6H6).

最简单的芳烃(也是最常见的一)是 (C6H6)。

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PBS人体科学

August Kekule's dream discovery of benzene's molecular shape is one of history's most famous dreams.

奥古斯特·凯库勒 (August Kekule) 梦想发现苯的分子形状是历史上最著名的梦想之一。

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