溴化氢

Tianrun company's existing 120 employees, of whom 15 were engineers, 3 senior engineers who enjoy special government allowances of experts one person, the company brominated long-term commitment to new product research and development, with a full range of laboratory facilities, laboratory room, to carry out most of bromine series products, small-scale test, pilot and laboratory experiments, subjects are as follows: high-quality three-bromo-phenol in the test, hydrogen bromide by-product utilization in the test, 1,000 tons of bromine dodecane-generation pilot project.

天润公司现有职工120余人，其中工程技术人员15人，高工3人，享受省政府特殊津贴专家1人，公司长期致力于溴系新产品的科研开发，拥有设施齐全的实验室、化验室，能够进行大部分溴系列产品的小试、中试实验及化验，现正进行的课题为：高品质三溴苯酚的中试，副产溴化氢的综合利用中试，1000吨溴代十二烷项目中试。

This new methods can shun corrosiveness of liquid bromine or gas hydrogen bromide released during bromating reaction to the equipments and eliminate harmfulness to the operating worker and environment.

研究以溴化钠/溴酸钠完全代替传统的溴素作为溴代试剂合成了四溴双酚A，避免了使用溴素和因溴素作为溴代试剂时产生的溴化氢对设备、操作人员以及环境的危害。

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。

Including high-purity synthetic hydrobromide, hydrogen bromide acetic acid solution, hydrogen bromide acetone \ dichloromethane solution, sodium bromide, calcium, ammonium and other inorganic bromide, Bromochloromethane second bromomethane, 1 - bromo --3 - chloropropane organic bromide.

包括高纯度合成氢溴酸、溴化氢醋酸溶液、溴化氢丙酮\二氯甲烷溶液、溴化钠、钙、铵等无机溴化物，溴氯甲烷、二溴甲烷、1-溴-3-氯丙烷等有机溴化物。

One synthetic strategy started fromγ-butyrolactone 38, from which a cyclohexadiene intermediate 30 was prepared in an overall yield of 44% in a 7-step procedure after y-butyrolactone underwent a-bromination, dehydrobromination, Diels-Alder reaction, aminolysis, benzylation, bromination and dehydrobromination, with the key step being the Diels-Alder reaction under harsh condition.

其中一个路线从γ-丁内酯38开始，连续经过α-溴化、脱溴化氢、Diels-Alder反应、胺解、苄基化、溴化和脱溴化氢共7步反应，制备了一个环己二烯衍生物30，总产率44％，关键步骤是高温高压下Diels-Alder反应。

The monomer ofbromostyrene was synthesized fromβ-bromobenzene by eliminating hydrogenbromide under sodium hydrate.

溴乙基溴代苯在氢氧化钠的作用下，发生溴化氢脱除反应，得到溴代苯乙烯单体。

A method for the determination of Acetic acid and Hydrobromic acid in air and environmental sample by ion-chromatography is described.

用同一吸收液采集、离子色谱法测定空气中的乙酸和溴化氢，采样体积为60L时，乙酸和溴化氢的检出限分别为0.03mg/m3和0.11mg/m3，相对标准偏差分别为1.9%和1.7%，实际样品的加标回收率分别为90.1%~102%和

Bromoundecanoic acid was synthesized with 10-undecanoic acid and hydrobromic acid as raw materials.

以10-十一烯酸和溴化氢为原料合成11-溴代十一酸，考察了引发剂、溶剂、反应温度、后处理方法、熟化时间等因素对反应和产品的影响。

Bromoundecanoic acid was synthesized with 10-undecanoic acid and hydrobromic acid as raw materials. The effects of initiating agent, solvent, reaction temperature, the ways of disposal, ripening time etc. on the reaction and product were investigated.

以10-十一烯酸和溴化氢为原料合成11-溴代十一酸，考察了引发剂、溶剂、反应温度、后处理方法、熟化时间等因素对反应和产品的影响。

Tetrachloroterephthalic acid was prepared by chlorinating terephthalic acid, oleumsolvent and iodine catalyst. Tetrachloroterephthalic acid was acylated by sulphurous oxychloride in the presence of DMF to form tetrachloroterephthaloyl chloride. The acyl chloride product was fluorinated by potassium fluoride and esterified by methanol to synthesize dimethyl tetrafluoroterephthalate. The ester was reduced with potassium borohydride and lithium chloride to give tetrafluoroterephthalyl alcohol. The above product was bromated in the hydrobromic acid to obtain 4-bromomethyl-2,3,5,6-tetrafluoro-benzene methanol. 4-Methyl-2,3,5,-6-tetrafluorobenzene ethanol was obtained by reducing the bromide with magnesium. In the exist of DCC and DMAP, tefluthrin was got by the condensation reaction between 4-methyl-2,3,5,6-tetrafluoro-benzene methanol and-(1RS,3RS)- 3-(2- chloro-3,3,3-trifluoro-1-propenyl)-2,2-dimethyl cycolpropanecar-boxylate acid.

对苯二甲酸与氯气在碘存在下以发烟硫酸为溶剂进行氯化制备四氯对苯二甲酸；再以DMF为催化剂与二氯亚砜反应生成四氯对苯二甲酰氯；以氟化钾为氟化剂，环丁砜为溶剂置换氟化，再与甲醇酯化得到四氟对苯二甲酸甲酯；以KBH4-LiCl为还原剂二甲醚为溶剂反应制得四氟对苯二甲基苄醇；以氯苯为溶剂在溴化氢溶液中溴化得到溴化产物；在乙醇溶液中经镁粉还原得到4-甲基-2，3，5，6-四氟苄醇；甲基苄醇与功夫酸在催化剂二环己基碳二亚胺和4-二甲氨基吡啶作用下缩合得到七氟菊酯，总收率达43.6%。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。