Sodium cyanate was prepared from reactants——urea and anhydrous sodium carbonate through liquid-solid chemical reaction method,in the solvent of N,N-dimethlformamide(DMF).
使用液固化学反应法,以尿素和无水碳酸钠为原料,在N,N-二甲基甲酰胺(DMF)溶剂的反应介质中,制备了氰酸钠产品。
The steril carbonate crystals of appropriate bulk-density were prepared by the methods of solvent-out crystallization in optimized condition,and the uniformity of the mixing cephalosporin and steril carbonate was improved.
采用溶析结晶法,通过优化结晶工艺条件,制备出合适松密度的无菌碳酸钠结晶,提高了其与头孢菌素原粉的混合、分装均匀性。
A new process of sodium fluoride production by sodium carbonate decahydrate
用十水碳酸钠生产氟化钠的新工艺
This article summarizes the current study of the production and greenized utilization of sodium carbonate decahydrate,and the further work direction is proposed from the angles of industrial ecology,circular economy and clean production.
综述了十水碳酸钠的产生与绿色利用现状。
By means of orthoganal experiment,a technique of joint production of sodium carbonate(Na 2CO 3) and sodium carbonate hydrate(Na 2CO 3·H 2O)using sodium carbonate decahydrate (Na 2CO 3·10H 2O) is researched.
通过正交实验 ,研究采用重结晶方法将工业废弃物十水碳酸钠制成一水碳酸钠和无水碳酸钠的工艺 ,文章探讨了结晶温度、蒸发水量、结晶时间、晶种加量对Na2 CO3 纯度和收率的影响 ,找出最优化工艺条件 ,并讨论过程原理和经济可行性 。
" Primary chemical-Sodium carbonate,anhydrous"
GB10735-1989第一基准试剂(容量)无水碳酸钠
Chemical reagent--Sodium carbonate anhydrous
GB/T639-1986化学试剂无水碳酸钠
working chemical-Sodium carbonate anhydrous
GB1255-1990工作基准试剂(容量)无水碳酸钠
photographic grade sodium carbonate, monohydrate
摄影用碳酸钠（一水合物）
inorganic carbonate of metals (excl, neutral sodium carbonate, natural carbonates and double or complex carbonates)
无机金属碳酸盐（不包括中性碳酸钠、天然碳酸盐和复或综合碳酸盐）
The Study of the Preparation of Sodium Percarbonate Using Inpure Sodium Carbonate Decahydrate by Technics of Semi-Dry Method;
粗十水碱半干法制备过碳酸钠的研究
Calcium removal from concentrated seawater by sodium carbonate in process of magnesium extraction
浓海水提镁过程中碳酸钠法除钙研究
bicarbonate of soda (sodium bicarbonate)
(小苏打) 碳酸氢钠
Sodium carbonate for industrial use
GB210-1992工业碳酸钠
bicarbonate of soda
碳酸氢钠, 小苏打
Hard water which can be softened by adding sodium carbonate is called permanent hard water.
经过加入碳酸钠能被软化的硬水，称为永硬水。
Sodium, sulfate, magnesium, calcium, carbonate, bicarbonate, chloride, and boron should be determined in a water anylasis.
水质分析要测定钠、硫、镁、钙、碳酸盐、重碳酸盐、氯和硼的含量。
Semi-Industrial Experiment on the Pretreatment of Molten Pig Iron by Top-Blowing Oxygen and TopAdding Sodium Carbonate
碳酸钠吹氧法预处理含钒铁水半工业实验
" Chemical reagent--Sodium sulfate, anhydrous"
GB/T9853-1988化学试剂无水硫酸钠
Sodium hydrogen carbonate for industrial use
GB/T1606-1998工业碳酸氢钠
complete equipment of sodium hydrogen carbonate plant
碳酸氢钠工厂成套设备
Food additive--Sodium carbonate
GB1886-1992食品添加剂碳酸钠
Chemical reagent--Sodium carbonate decahydrate
GB/T9856-1988化学试剂碳酸钠