查询词典 sodium carbonate

The experimental results show that when the ratio of seven water ferrous sulfate amount: Calcium carbonate powder amount: Ferri waste residue amount =1.6∶1∶1, desulphurization effect of the obtained product is the best. Each gram of this kind of desulfurizer can completely absorb the sulfur element, which is included by 0.064 9 g five water sodium sulfide.

实验结果表明：当七水硫酸亚铁∶碳酸钙粉末∶含铁废渣=1.6∶1∶1时，制备的脱硫剂脱硫效果最好；每克脱硫剂可全部吸收0.0649g五水硫化钠中的硫元素。

A preferred form of the invention is a process comprising adding to a quantity of sodium which is covered with a hydrocarbon solvent boiling above 100°C., at least a chemically equivalent proportion of methyl, ethyl or a propyl alcohol, subsequently adding an approximately equivalent proportion of a dialkyl carbonate and of an alkyl phenylacetate, the alkyl groups in these two last-mentioned compounds being preferably the same as the alkyl radical of the above-mentioned lower aliphatic alcohol, heating the mixture to induce reaction and continually distilling out the alcohol formed from the reaction zone.

本发明的理想形式包括下面的工艺过程：把至少处于化学平衡的甲醇，乙醇或丙醇添加到覆盖着沸点超过一百摄氏度的碳氢化合物溶剂中，接着加入大约相同当量的二烷基碳酸酯和烷基乙酸苯酯，在刚才提到的化合物中，其烷基集团最好是和刚才提到的低级别脂肪族醇相同，然后加热反应混合物从而引导反应的进行，在反应区域通过连续蒸馏移除形成的醇类。

Division Main chemicals products, palm wax, azo two different Western eyes, light calcium carbonate, talc yet, lithopone, zinc stearate, titanium dioxide, iron oxide Hongfen, carbon black powder, boron powder , Soda ash, protopine, Linsuansanna, sodium nitrite, metal cleaning agent tablets of activated carbon, paraffin, hydrogen peroxide, PAC, gypsum powder, stearic acid and other chemical products, the full range , Reliable, ensure credibility.

本部主营化工原料产品，有棕榈蜡、偶氮二异西睛、轻质碳酸钙、尚滑石粉、立德粉、硬脂酸锌、钛白粉、氧化铁红粉、碳黑粉、硼粉、纯碱、片碱、磷酸三钠、亚硝酸钠、金属清洁剂、活性碳粒、石蜡、双氧水、聚合氯化铝、石膏粉、硬脂酸等多种化工产品，品种齐全，质量可靠，信誉保证。

Different modifier s such as stearic acid,titanate coupling agent,sodium dodecyl benzene sulfonate and phosphorate are applied to improve the surface activity of ground calcium carbonate powder.

通过对改性效果分析，讨论各改性剂的改性特点及最佳配比，寻找碳酸钙的改性最佳工艺。

Paper pulp and mixed blowing agent (sodium bicarbonate,potassium alum,starch,potas- sium D-bitartrate,and calcium carbonate) was used to produce the foaming pulp material.

以纸浆为原料，使用复合发泡剂(碳酸氢钠、钾明矾、淀粉、酒石酸氢钾、轻质碳酸钙)，制作纸浆发泡缓冲材料，得到稳定的实验配方，所得发泡材料的静态缓冲系数在4～5之间。

If the propellant contains metallic elements such as potassium, sodium, or aluminum, or contains Chlorine , this will result in condensed products of combustion, such as potassium carbonate,, aluminum oxide or potassium chloride.

如果推进剂包含金属元素，如钾款，钠的，或铝的，或含有氯，这将导致简明燃烧产生的，如碳酸钾，，氧化铝或氯化钾。

C. The quench is performed with aqueous sodium hydrogen carbonate and ethyl acetate.

三是演出的淬火、乙酸乙酯碳酸氢钠水溶液。

SPECTROMETRIC DETERMINATION OF PHOSPHORUS IN SODIUM HYDROGEN CARBONATE SOLUTION.

在碳酸氢钠溶液中可溶磷的光谱测定

The main products of the plant are as follows:liquid alkali,hydrochloric,chlorinated polyethylene,High purity chlorinated polyethylene,furfuralcohol,layred crystal sodium metasilicate,hight purity dimethyl carbonate,propanedilo.

主要产品有：烧碱、液氯、盐酸、氯化聚乙烯、高氯化聚乙烯、糠醇、层层状结晶硅酸钠、高纯碳酸二甲酯和丙二醇。

The taurohyodeoxycholic acid was synthesized by aminolysis of sodium taurine with carboxy-carbonate mixed anhydride prepared by reacting hyodeoxycholic acid with ethyl chloroformate at the present of triethylamine.

猪去氧胆酸与氯甲酸乙酯在三乙胺存在下反应生成羟酸－碳酸乙酯混合酐，而后将其与牛磺酸钠进行氨解反应，合成猪磺去氧胆酸。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。