查询词典 benzene

Perrier had to destroy 160m bottles in 1990 after the discovery of benzene levels twice as high as those regarded as safe by the World Health Organisation.

Perrier在1990年发现，其瓶装水的苯含量达到世界卫生组织安全标准的两倍，该公司不得不销毁了1.6亿瓶水。

Soluble in acetone, benzene, toluene as organic solvents, soluble in petroleum ether and carbon tetrachloride.

溶于丙酮、苯、甲苯等有机溶剂中，难溶于石油醚和四氯化碳。

Purified by petroleum ether instead of benzene, the results had no obvious difference.

与用苯作为洗脱剂方法测定结果比较，两者无显著性差异。

Methods Less toxic solvents such as cyclohexane, n-hexane, petroleum ether and chloroform were compared with benzene and toluene.

用毒性较小的溶剂环己烷、正己烷、石油醚和三氯甲烷等取代苯或甲苯。

Insol in cold water, petroleum ether, ether, benzene and chloroform.

不溶于石油醚、乙醚、苯和氯仿等非极性溶剂。

Benzene and toluene could be replaced by other less toxic solvents in the pharmacopeia.

建议《中国药典》逐步取消具有一定致癌性和强毒性的苯及甲苯。

Chemical corporations within this region may provide matching chemical products and raw materials such as citric acid, starch sugar, L-lactic acid, nitrochlorobenzene, paranitrophenol sodium salt sodium para-nitro phenolate, pphenylenediamine , sodiumhydroxide, benzene anhydride, carbonic acid propylene grease, polyacrylamide ,2.4- dinitrochlorobenzene, 2.4- dinitrosixchlorin, and sodium cyanide.

区内化工企业可配套提供柠檬酸、淀粉糖、 L —乳酸、硝基氯苯、对硝基酚钠、对苯二胺、烧碱、苯酐、碳酸丙烯脂、聚丙烯酰胺、2.4—二硝基氯化苯、2.4—二硝基6氯、氰化钠等化工产品或原料。

A series of so-called hairy-rod fluorene-alt-benzene based polymers with different substituted groups on phenylene were synthesized through Suzuki route.

通过光谱、电化学和模拟计算等手段研究了苯环上不同性质的侧基取代芴苯聚合物的发光性质、电化学性质和溶剂化效应等，同时研究了侧基性质的变化对这些物理性质的影响规律。

Syntheses of PPVs derivatives with alkoxyl as side-chain by the method of dehalogenating condensation reaction Those PPV derivatives, named poly (2-methoxy-5-alkoxyl) phenylene vinylene,containing alkoxyl on benzene ring, were placed on emphasis in this paper.

一。通过强碱诱导的去卤缩合法合成支链含不同烷氧基的PPV衍生物本文首先重点研究了支链中含不同链长烷氧取代基的PPV衍生物：聚(2-甲氧基-5-烷氧基)对苯乙炔。

Several trivalent (boron, aluminium, iron, arsenic and antimony) and tetravalent metal/non-metal derivatives of N-(2-methyl) phenylglycine have been prepared by the interaction of their corresponding isopropoxide with the latter in 1:1 and 1:2 molar ratios in benzene medium.

用N-(2-甲基)苯基甘氨酸合成了几种及四价金属/非金属衍生物。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。