Study on the preparation of food additive grade of disodium hydrogen phosphate 食品添加剂磷酸氢二钠制备的工艺研究
The pH value of solution of ammonium acetate and acid salt ( e.g. sodium dihydrogen phosphate, disodium hydrogen phosphate) has been calculated by free energy change of coupling reaction. 用耦合反应的自由能变,计算了醋酸铵和酸式盐(例如,磷酸二氢钠和磷酸氢二钠)溶液的pH值。
Pathes of developing and utilizing the natron by-product from the production of ADC are introduced in detail, which includes substituting for soda in the refinement of brine, producing soda, producing twelve-hydrated disodium hydrogen phosphate and trisodium phosphate, and producing sodium sulfite. 详述了ADC生产中副产十水碳酸钠的开发利用途径,如在盐水精制中代替纯碱,生产纯碱,生产十二水磷酸氢二钠和磷酸三钠,生产亚硫酸钠。
Neutralization reaction between purified WPA and sodium carbonate for the salt mixture of disodium hydrogen phosphate and monometallic sodium orthophosphate; 净化后的磷酸与碳酸钠中和反应生成磷酸一氢钠和磷酸二氢钠混合盐溶液;
Then, in the bovine serum albumin ( BSA) buffer solution containing disodium hydrogen phosphate and citric acid, ferrite/ polyacrylamide was added with crosslinker glutaraldehyde and then be enwrapped by BSA. 然后在牛白蛋白的磷酸氢二钠-柠檬酸缓冲溶液中,以戊二醛为交联剂,加入Fe3O4/PAM微球,使蛋白质特异性吸附在微球上。
The results show that: there are many modifiers can improve the humidity resistance of sodium silicate sand, including polyvinyl alcohol, disodium hydrogen phosphate, xylitol, lithium carbonate, polyethylene glycol, polyurethane, ethyl silicate, silicon hydride coupling agent and diethylene glycol ether. 实验结果表明:聚乙烯醇、磷酸氢二钠、木糖醇、碳酸锂、聚乙二醇、聚氨酯、硅酸乙酯、硅烷偶联剂和二乙二醇乙醚等改性剂改性水玻璃均能提高微波硬化水玻璃砂的抗吸湿性。
Sodium dihydrogen phosphate and sodium hydroxide to adopt national standards for quality control of dr μ gs and developed a disodium hydrogen phosphate injection with the quality standards, as the internal control quality standards. 辅料磷酸二氢钠和氢氧化钠采用国家药品标准进行质量控制,并制订了磷酸氢二钠的注射液用质量标准,作为内控质量标准。