查询词典 acetylene acid

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。

METHODS 3-methoxy-7α-methylestra-1,3,5(10)-trien-17β-ol was reducted with lithium and ammonia,then the intermediate was hydrolyzed in oxalic acid and reacted with malonic acid to get 3,3-dimethoxo-7α-methylestra-5(10)-en-17-ol(compound 4),which was oxidated by pyridium bichromate ,reacted with acetylene,and hydrolyzed in oxalic acid again to get the product tibolone.

方法以3-甲氧基-7α-甲基雌甾-1，3，5(10)-三烯-17β-羟基为起始原料经锂胺还原、草酸水解、缩酮化得3，3-二甲氧基-7α-甲基雌甾-5(10)-烯-17β-羟基(化合物4)，然后用温和的氧化剂重铬酸吡啶盐氧化、炔化、再水解得目的产物。

Currently 14 existing products, according to campaign is divided into four categories: one category is phosphorus chemical series, to yellow phosphorus, phosphoric acid, sodium tripolyphosphate-based, phosphoric acid, sodium tripolyphosphate of the 50,000 tons / Year; second category is the chlor-alkali series, caustic soda, hydrochloric acid, liquid chlorine, hydrazine hydrate, polyethylene butyral mainly three types of products is manganese, manganese powder, manganese ingots, mainly Electrolytic Manganese, One Electrolytic Manganese annual production capacity of 10,000 tons, manganese ingot processing capacity 15,000 tons / year; four other products, including oxygen, acetylene, such as selenium dioxide.

目前现有产品14个，按系列分为四大类：一类是磷化工系列，以黄磷、磷酸、三聚磷酸钠为主，其中磷酸、三聚磷酸钠各5万吨／年；二类是氯碱系列，以烧碱、盐酸、液氯、水合肼、聚乙烯缩丁醛为主；三类是锰产品系列，以锰粉、锰锭、电解锰为主，其中电解锰年生产能力为1万吨，锰锭加工能力1.5万吨／年；四类是其他产品包括氧气、乙炔、二氧化硒等。

His friend, who owned a factory that manufactured acetic acid and acetylene , introduced him to a dance band.

他的朋友，一个拥有生产醋酸和乙炔工厂的人，介绍他去了一家乐队。

China mainly natural gas used in the production of nitrogen, followed by the production of methanol, formaldehyde, acetylene, methylene chloride, carbon tetrachloride, carbon disulfide, nitromethane, hydrocyanic acid and extraction of helium and carbon black. Since the 70s, has built more than natural gas and oil field associated gas as raw materials for large-scale ammonia plant, as well as a number of small and medium-sized ammonia plant, so that the national structure of the synthetic ammonia production of raw materials, natural gas share of about 30%; also be built at the same time A system of acetylene gas plant to manufacture Vinylon and vinyl acetate, acetylene gas used in the production of methanol.

中国天然气主要用于生产氮肥，其次是生产甲醇、甲醛、乙炔、二氯甲烷、四氯化碳、二硫化碳、硝基甲烷、氢氰酸和炭黑以及提取氦气。70年代以来，已兴建多座天然气和油田伴生气为原料的大型合成氨厂，以及一批中、小型合成氨厂，使全国合成氨生产原料结构中，天然气所占的比例约达到30％；同时还兴建了天然气制乙炔工厂，以制造维尼纶和醋酸乙烯酯，乙炔尾气用于生产甲醇。

During the second transition about 231°C, a structural change took place, which corresponding to decomposition of silver behenate. The major thermal decomposition products are silver nanoparticles and behenic acid. The gas products from thermal decomposition of silver behenate were detected by MS. Carbon dioxide was first emerged, subsequently water, hydrogen, acetylene and some small molecule alkenes appeared.

采用MS对山嵛酸银在整个热分解过程中所释放出的气体产物的跟踪检测发现，首先是二氧化碳气体的放出，接着是氢气和水，随着温度的进一步升高，又伴随着乙炔和一些小分子的烯烃产生，当温度进一步升高到500℃左右时，被山嵛酸钝化的银纳米粒子逐渐失去了有机分子，最终的热分解产物为金属银。

Caustic soda,hydrochloric acid,liquid chlorine,PVC resin,sulfuric acid,chlorosulfonic acid,calcium carbon,sulfanilamide,sulfadimidime,dissolved acetylene,oxygen and hypochloric sodium.

烧碱，盐酸，液氯，聚氯乙烯，硫酸，氯磺酸，电石，磺胺，磺胺脒，溶解乙炔，氧气，次氯酸钠。

Chemical Products, Chemicals: inorganic acid, sodium compounds, potassium compounds, calcium compounds, barium compounds, manganese compounds, chromium compounds, nickel compounds, zinc compounds, magnesium compounds, aluminum compounds, single-element chemical products, even items of the five machines Chemical products, paraffin, waxes other chemicals, coke, oil and chemicals, alcohol, aldehyde chemicals, acetate chemicals, ketones, ethers, phenols chemicals, alkanes, alkenes, acetylene chemicals, amine chemicals, aromatic chemicals, Miscellaneous organic chemicals, acid chemicals, other chemicals, dyes and intermediates, pigment materials, plastic materials, agricultural chemicals: fertilizers, pesticides, growth agents, plastic sheeting, etc., equipment, pyrophoric alloys, articles of combustible materials , chemical reagents, rubber, imports, machinery and equipment, machinery and equipment, apparatus; photographic equipment; printing equipment; general machinery; textile equipment; Machine Components; a variety of equipment, Shanghai, Zhejiang, Guangdong, Jiangsu high-quality, low-carbon The new satellites technology goods manufacturers, exporters, wholesalers, traders, USA, United States importers, wholesalers, retailers, investors, designers, planners, please contact our office, George Chen, Mobile :+

化工产品类，化工原料：无机酸，钠化合物，钾化合物，钙化合物，钡化合物，锰化合物，铬化合物，镍化合物，锌化合物，镁化合物，铝化合物，单元素化工品，什项五机化工品，石蜡、蜡类其他化工品，焦、油化工品，醇、醛化工品，酯化工品，酮、醚、酚化工品，烷、烯、炔化工品，胺化工品，芳烃化工品，什项有机化工品，羧酸化工品，其它化工原料，染料及中间体，颜料原料，塑料原料，农用化工品：化肥，农药，生长剂，农膜等，器材，引火合金，易燃材料制品，化学试剂，橡胶，进口，机械设备，机械及设备，仪器；摄影器材；印刷器材；通用机械；纺织器材；机械基础件；各种成套设备，中国上海，浙江，广东，江苏优质，低碳，新颗科技商品生产商，出口商，批发商，贸易商，美国，美利坚合众国进口商，批发商，零售商，投资商，设计师，规划师们，请与我处联系，George Chen，Mobile：+

Including high temperature for the pyrolysis of natural gas to produce carbon black and acetylene; steam reforming of natural gas or partial oxidation of natural gas, synthetic gas can be obtained; natural gas through chlorination, sulfide, nitrification, ammoniated oxide, oxidation can be obtained A N all kinds of derivatives; in the wet gas ethane, propane, butane and natural gas liquid condensate, and so on, the steam cracker or pyrolysis to produce ethylene, propylene and butadiene; dehydrogenation of butane oxidation or produce small Diene or acetic acid, methyl ethyl ketone, and maleic anhydride, and so on.

包括在高温下进行的天然气热裂解，主要生产乙炔和炭黑；天然气蒸汽转化或天然气的部分氧化，可制得合成气；天然气经过氯化、硫化、硝化、氨化氧化、氧化可制得甲烷的各种衍生物；湿性天然气中的乙烷、丙烷、丁烷和天然气凝析液等，经蒸汽裂解或热裂解可生产乙烯、丙烯和丁二烯；丁烷脱氢或氧化可生产丁二烯或醋酸、甲基乙基酮、顺丁烯二酸酐等。

Compared with the present process for the synthesis of acrylate by esterification of acrylic acid, which comes by oxygenation of propylene, the process by the carbonylation of acetylene to acrylic acid and its esters pays less cost, and so, is worth to be studied.

相对于目前主张的丙烯氧化法生产丙烯酸，再酯化生产丙烯酸酯的主流工艺，乙炔羰基化法合成丙烯酸及酯的工艺具有很好的经济性应用价值。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐