溴乙烷

In this paper,the advantages of a new type of bromine flame retardant decabromodiphenylethane are introduced.

介绍了新型高效溴系阻燃剂十溴二苯乙烷的突出优点，介绍了我国十溴二苯乙烷的生产方法和现状，讨论了国内十溴二苯乙烷的研究及应用研究情况，展望了十溴二苯乙烷的发展前景。

Methods: The twelve volatile halogenated hydrocarbons (1, 1-dichloroethene, dicloromethane, trans-1, 2-dichloroethene, cis-1, 2-dichloroethene, chloroform-1, 1, 1-trichloroethane-1, 2-dichloroethane, tetrachloromethane, bromodichloromethane, dibromochloromethane, tetrachloroentene and bromoform) in drinking water were determined by headspace capillary gas chromatography.

采用顶空毛细管柱气相色谱法测定饮用水中1，1-二氯乙烯、二氯甲烷、反－1，2-二氯乙烯、顺－1，2-二氯乙烯、三氯甲烷、1，1，1-三氯乙烷、1，2-二氯乙烷、四氯化碳、一溴二氯甲烷、二溴一氯甲烷、四氯乙烯及三溴甲烷等12种挥发性卤代有机物。

Is now an annual production capacity of calcium chloride, bromide, DecaBDE, DBDPE three bromine phenol, Tetrabromobisphenol A, octabromodiphenyl ether, benzyl bromide, diphenyl ether, dibenzo ethane and other chemicals, 5,000 tons of bromine, hydrogen bromide by-product 5000 tons, the product export to Europe and Southeast Asia market, the company owns self import and export rights, and have passed the ISO9001: 2000 certification, is the most full-bromine chemical species, product quality, one of the best high-tech enterprises.

现已形成年产氯化钙，溴素，十溴二苯醚、十溴二苯乙烷、三溴苯酚、四溴双酚A、八溴醚、溴化苄、二苯醚，二苯乙烷等各类溴化学品5000吨，副产溴化氢5000吨，产品出口欧洲和东南亚市场，公司拥有自营进出口权，并已通过ISO9001：2000认证，是国内溴化学品种最全、产品质量最好的高新技术企业之一。

The effects of different PTC,reacting time,temperature,the concentration of potassium hydroxide and the bromoethane amout on the reaction were studied.

考察了不同相转移催化剂、反应时间、反应温度、氢氧化钾浓度、溴乙烷用量诸因素对2－甲基吲哚进行N－烷基化反应的影响。

This investigation focuses on pigment phthalocynine green G modified with octadcylamine, which is suspended in tetrachloroethylene and 1,2-dibromoethane using span-80 and CH-6 hyperdispersants as emulsifiers.

采用正交设计方法，以十八胺改性酞菁绿G形成电泳颗粒，以四氯乙烯和1，2-二溴乙烷的复配液为分散介质，Span-80和CH-6超分散剂为稳定剂，制备了分散性和稳定性良好的电泳显示液。

Professional sales companies operating bromide products: sodium bromide, sodium bromide, potassium bromide, potassium bromate, Tetrabromobisphenol A, Deca-BDE, ten PBDEs, DBDPE, hexabromodiphenyl Central dodecane, dibromo neopentyl glycol, neopentyl bromide three alcohols, three bromine phenol, octabromodiphenyl ether, brominated polystyrene, bromide, calcium bromide, dibromo succinic acid, dibromo-D ene glycol, bromide surfactants series: Dodecyl trimethyl ammonium bromide, tetradecyl trimethyl ammonium bromide, cetyltrimethyl ammonium bromide, octadecyl trimethyl ammonium bromide dodecyl trimethyl ammonium chloride, tetradecyl trimethyl ammonium chloride, cetyl trimethyl ammonium chloride, octadecyl trimethyl ammonium chloride, tetrabutyl ammonium bromide wholesale sales: dimethylolpropionic acid, DL-malic acid, isophthalic acid PIA, glycolic acid, adipic acid.

公司专业经营销售溴化物系列产品：溴化钠、溴酸钠、溴化钾、溴酸钾、四溴双酚A、十溴二苯醚、十溴联苯醚、十溴二苯乙烷、六溴环十二烷、二溴新戊二醇、三溴新戊醇、三溴苯酚、八溴醚、溴化聚苯乙烯、溴化铵、溴化钙、二溴丁二酸、二溴丁烯二醇、溴化表面活性剂系列：十二烷基三甲基溴化铵、十四烷基三甲基溴化铵、十六烷基三甲基溴化铵、十八烷基三甲基溴化铵、十二烷基三甲基氯化铵、十四烷基三甲基氯化铵、十六烷基三甲基氯化铵、十八烷基三甲基氯化铵、四丁基溴化铵批发销售：二羟甲基丙酸、DL-苹果酸、间苯二甲酸 PIA、羟基乙酸、己二酸。

His paper deals with the purification of tetrabromoethane by continuous countercurrent scrub-bing with annular centrfugal extractor.

研究了离心萃取器的转速和重相堰直径在四溴乙烷一水体系中对洗涤效果的影响，并得到了优化参数。

In this study, new benzo[l,2,3]thiadiazole derivatives were designed according to relationship of structure and efficacy. The 9 novel compounds were synsthesized with following reactions. The chlorine atom in 2-chloro-3,5-dinitro-benzoic acid as beginning raw material was substituted by 2-methylpropane-2-thiol, esterified then with bromoethane, reduced by iron powder and cyclized to obtain ethyl benzo[l,2,3]thiadiazole-7 after diazonation reation.

本论文根据苯并噻二唑诱导剂的构效关系设计了新的苯并噻二唑的结构，并合成了9个未见文献报道的化合物，合成步骤如下：采用2-氯-3，5-二硝基苯甲酸为起始原料，苯环上的氯原子被叔丁基硫醇置换，羧酸由溴乙烷酯化，硝基由铁粉还原，随后经重氮化关环生成苯并[1，2，3]噻二唑-7-羧酸乙酯。

A new process for catalytic synthesis of decabromodiphenylethane was developed by brominating diphenylethane with bromine chloride and bromine solution to decrease bromine consumption and simplify post-treatment process.

当氯化溴/二苯乙烷摩尔比为10，溴/二苯乙烷摩尔比为15，反应时间为5h时得到十溴二苯乙烷的收率98.4%，产品平均溴代数9.8，产品中溴含量81.0%，产品中氯含量0.9%。

So, in the present study, we have investigated the photodissociation of these alkyl bromides at their A-band using resonance-enhanced multiphoton ionization scheme, ion velocity map imaging technique, expecting to get a variety of information.

同时，采用单色双光子质量分辨的零动能光谱技术得到了溴乙烷的高分辨的离子振动光谱，并分析了离子振动光谱与解离中间态的关系。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。