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- Sodium hydrogen carbonate should be added in portions and carefully, preventing overflow of the products from the beaker. 中和用碳酸氢钠要适量,每次加入量也不能太多否则会起泡沫溢出烧杯,造成不必要的损失。
- The analytical method of sodium carbonate,sodium hydrogen carbonate and total alkality in natural alkali was studied by combining nonwater titration with acid-base titration. 研究了非水滴定和酸碱滴定相结合测定天然碱中碳酸钠、碳酸氢钠和总碱度的分析方法;
- complete equipment of sodium hydrogen carbonate plant 碳酸氢钠工厂成套设备
- Production and consumption status of sodium hydrogen carbonate inland and abroad 国内外碳酸氢钠生产与消费概况
- Keywords sodium bicarbonate tablet;sodium hydrogen carbonate;microtitration;conventional titration; 小苏打片;碳酸氢钠;微型滴定法;常规滴定法;
- Sodium hydrogen carbonate for industrial use; Determination of iron content; 1,10- Phenanthroline photometric method 工业用碳酸氢钠.;铁含量的测定
- sodium hydrogen carbonate 碳酸氢钠
- The condensation is effected by heating a suitable mixture of sodium hydrogen orthophosphates. 聚合可借加热正磷酸氢钠的适当混合物实现。
- By using sodium hydrogen sulfate as the catalyst,benzyl alcohol and propionic acid reacted to form benzyl propionate. 选用乙醇和水作为溶剂 ,实现亚硫酸氢钠对异氰酸酯的良好封闭。
- Red phosphor Al2O3:Eu was prepared by co-precipitation method using mixture of ammonium hydrogen carbonate and ammonium water as complex precipitator. 用碳酸氢铵和氨水混合溶液作为复合沉淀剂制备了Al2O3:Eu红色荧光粉体。
- Using sodium hydrogen sulfate as the catalyst,butanic acid and benzyl alcohol reacted to form benzyl butyrate. 选用乙醇和水作为溶剂 ,实现亚硫酸氢钠对异氰酸酯的良好封闭。
- Nanometer CeO_2 powders were prepared by means of microwave radiation using cerous nitrate and ammonium hydrogen carbonate. 以硝酸铈为原料;碳酸氢铵为沉淀剂;用微波加热的方法制备了纳米CeO_2超细粉体.
- The influences of sodium hexametaphosphate,sodium triphosphate and sodium hydrogen phosphate on the quality of quick-frozen dumplings were studied. 选用2种有代表性的面粉通过添加六偏磷酸钠、三聚磷酸钠和磷酸氢二钠3种磷酸盐制作速冻水饺。
- This paper briefly reviwed sodium hydrogen telluride (NaTeH), as a better nucleophilic reagent and reductive agent, being used widely in organic synthesis. 本文介绍了碲氢化钠作为一种优良还原剂及亲核试剂在有机合成中的主要作用。
- Reaction of ketones with sodium diselenide and sodium hydrogen selenide under the catalysis of n-BuNH2 gave a moderate yield of diselenides in a "one-pot" fashion. 在正丁胺的催化下,酮与硒氢化钠、二硒化钠乙醇溶液通过“一锅”法反应得到了中等产率的二硒醚。
- ZHAO Hua-rong, YU Qing-sen.Bond breaking in dithiocarbarnates promoted by sodium hydrogen selenide [J].Journal of Zhejiang University (Science Edition), 2002, 29(3):308-311. [8]赵华绒;俞庆森.;硒氢化钠作用下二硫代氨基甲酸酯键的断裂[J]
- Water, containing dissolved calcium hydrogen carbonate, passes through the limestone and drops evaporate on the stalactite, increasing its length with a deposit of calcium carbonate. 含有溶解碳酸氢钙的水通过石灰石滴在钟乳石上蒸发,随着碳酸钙沉积物的增加不断增加着它的长度。
- Gypsum,ammonium hydrogen carbonate and potassium chloride were used as raw materials in this research,to produce potassium sulfate,potassium ammonium chloride and calcium carbonate. 以石膏、碳酸氢铵和氯化钾为原料,生产硫酸钾、氯化铵钾和碳酸钙,原料综合利用充分,经济效益好。
- As viewed from application of the technoogy of producing high-pure manganes carbonate using poor manganese, ferrisulphas and ammonium hydrogen carbonate as raw material is introduced. 本文从应用的角度出发,介绍了以贫锰矿、硫酸亚铁、碳酸氢控等为原料,生产高纯碳酸锰的方法。
- Bis(polyglycol) maleate, which were obtained by solvent method, reacted with phthalic anhydride, then the double bond of maleic anhydride of polymer obtained with sodium hydrogen sulfite. 采用溶剂法制得马来酸双聚乙二醇酯,与邻苯二甲酸酐缩聚,用亚硫酸氢钠加成缩聚物中马来酸酐上的双键。