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硫酸化

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In the first step KHSO4 is formed from KCl by acidulation using sulphuric acid.

从氯化钾中获取硫酸钾的第一步是通过使用硫酸进行酸化处理。

Ce2(SO4)3 was used as an inexpensive and effective catalyst for the Friedel-Crafts alkylation of aromatic compounds with benzyl alcohol s, allyl alcohols and benzyl chlorides.

硫酸亚铈作为一种便宜的和有效的催化剂催化芳香化合物与苄基醇、烯丙醇类化合物和苄基氯的傅-克烷基化反应。

Ce2(SO4)3 was used as an inexpensive and effective catalyst for the Friedel-Crafts alkylation of aromatic compounds with benzyl alcohols, allyl alcohol s and benzyl chlorides.

硫酸亚铈作为一种便宜的和有效的催化剂催化芳香化合物与苄基醇、烯丙醇类化合物和苄基氯的傅-克烷基化反应。

The two companies are integrated enterprises specialized in the production of spice, API, leather, building chemical products, and rubber. We have rich production experience, advanced production equipment, considerable technological force to produce products of top class quality. Our production and business concept is "service and credit first". We have invested 25 million RMB yuan in our companies and have totally 108 employees, 25% of whom are medium-level and senior technicians. We produce series products of Purple Mink brand including the spice: Raspberry ketone, Piperonal, Anisaldehyde, 99% isosafrole, 99% safrole; APIs: Diphenylmethanol, 4-Octyloxyphenol, 2,3-Dihydrofuran; leather chemical products: XD Alkaline chromium sulphate, XD Liming agent; building materials: productivity of 15000 tons of naphthalene series high-efficient high-concentration water reducing agent and 8000 tons of environment-friendly aliphatic water reducing agent; rubber chemical products: F101 Composite resin rubber sulfidizer. The annual sales amount is 80 million RMB.

本公司生产产品涉及香料、医药原料、皮革化工、建材化工、橡胶化工综合性化工企业,具有生产经验丰富、生产设备先进、技术力量雄厚、产品质量一流,服务、信誉第一的生产经营理念,资本投入2500万元,公司员工108人,各类中、高级技术人材占总人数的25%,生产的"紫貂"牌系列产品主要有香料类:覆盆子酮、洋茉莉醛、天然大茴香醛、99%异黄樟素、99%黄樟素,医药原料类:二苯甲醇、4-辛氧基苯酚、2,3-二氢呋喃,皮化类:XD碱式硫酸铬、XD浸灰助剂,建材化工类:萘系列高效、高浓减水剂15000吨、绿色环保型脂肪族减水剂8000吨的母体生产力,橡胶化工类:F101复合树脂橡胶硫化剂系列产品。

Objective:To observe the effect of aerosol inhalation of β 2 receptor stimulant combined with anticholinergic in treating asthma attack.

目的 :观察β2 受体激动剂硫酸特布他林和抗胆碱能药物溴化异丙托品联合雾化吸入治疗哮喘急性发作的作用。

To restore the ability of chromium can be dissolved in sulfuric acid, hydrochloric acid and High-FE acid and release hydrogen, but also of pure chromium with aqua regia does not work, when there is the presence of halogen ions in the acid can not be long-term stability, high temperature with alkali, hydrogen sulfide, sulfur steam, phosphorus, ammonia, such as carbon monoxide and water vapor reaction of the corresponding compounds, in the high temperature reaction of silicon into the silicide also chromium, chromium alloys with many metals generate a wide range of industrial applications, such as chromium-manganese stainless steel is used extensively for chemical plants.

铬的还原能力强,能溶于硫酸、盐酸和高FE氯酸而放出氢气,但纯铬连王水也不起作用,当有卤素离子存在时,在酸中不能长期稳定,高温时能与强碱、硫化氢、硫蒸汽、磷、氨、一氧化碳和水蒸汽等反应生成对应的化合物,在高温下还能与硅反应成硅化铬,铬能与许多金属生成合金广泛在工业上应用,如铬锰不锈钢大量用于化工设备。

Results Under normal production conditions, concentration of sulfuric acid, hydrochloric acid, arsenic hydrogen and sodium hydroxide which could cause occupational hazardous accidents met the occupational exposure limits.

结果 在正常的生产条件下引起职业病危害事故的硫酸、盐酸、砷化氢和氢氧化钠的浓度符合职业接触限值。

For example, acetylene generated by the carbide process contains arsenical and sulphur compounds, and other impurities, which must be removed by scrubbingwith concentrated sulphuric acid before it is sufficiently pure for reaction with hydrochloric acid (此处有误,应为hydrochloride氯化氢) to produce dichloroethane.

例如,由碳化钙发生的乙炔气含有砷和硫的化合物以及其他的杂质,必须在乙炔有足够的纯度与氯化氢反应制造二氯乙烷之前,用浓硫酸洗去这些杂质。

Determination of Theobromine and Caffeine in Cocoa Powder and Cacao Shell Tincture by High Performance Liquid Chromatography

性质:N-卤代胺在浓硫酸中加热,消除一分子卤化氢,环化成吡咯烷衍生物。

CdS nanoarods have been synthesized by using Cetyltrimethyl Ammonium Bromide as the soft template under γ-irradiation through the reaction of cadmium sulphide (CdSO4·8/3H2O) and thiacetamide in acidic condition for pH value of 3. The physical and chemical properties and the structure of CdS nanorods were characterized by XRD, UV-Vis, SAED, TEM and PL.

在pH=3的酸性条件下,以硫酸镉和硫代乙酰胺为反应前驱体,采用十六烷基三甲基溴化铵自组装形成的管状胶束为模板,通过γ射线辐照法成功合成了CdS纳米棒,并通过XRD、UV-Vis、SAED、TEM和PL等技术对反应中间产物及最终产物进行了表征。

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They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性,但我大喊,并在他们的方向扔石头让他们过的线索,远离我,以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。

Store this product in a sealed, lightproof, dry and cool place.

密封,遮光,置阴凉干燥处。