硫酸氢钠

By using sodium hydrogen sulfate as the catalyst,benzyl alcohol and propionic acid reacted to form benzyl propionate .

以苯甲醇、丙酸为原料，硫酸氢钠为催化剂，合成了丙酸苄酯。

OBJECTIVE To investigate the degradation kinetics of sodium formaldehyde sulfoxylate.

中文摘要：目的研究药用抗氧剂甲醛合次硫酸氢钠在水溶液中氧化反应的反应速率常数。

To determine the rate constants of oxidation reaction between sodium formaldehyde sulfoxylate and oxygen in aqueous solutions at different pH values, different temperatures, different buffer concentrations and different dissolved oxygen concentrations.

考查在不同PH值，不同缓冲液浓度，不同温度，不同溶解氧浓度的条件下甲醛合次硫酸氢钠在水溶液中与氧反应的反应动力学特征。

METHODS The residual concentrations of sodium formaldehyde sulfoxylate in the solutions were determined by iodimetry, the datas were fitted by linear regressions and then ...

在高精度电热恒温箱中在不断通入空气或医用纯氧的情况下，采用碘量法测定甲醛合次硫酸氢钠在水溶液中不同时刻的浓度，作出降解曲线，将测得的数据进行降解动力学方程的拟合并获得动力学参数，并计算反应速率常数。

The department has begun to "De-tat Longkou fans" sampling. Longkou fans for the incident was found formaldehyde sulfoxylate experts,"formaldehyde sulfoxylate" is a toxic industrial bleaching agent, there are serious side effects to the human body.

昨天，北京市食品安全办通报说，烟台德胜达龙口粉丝有限公司生产的龙口粉丝中被检出&甲醛次硫酸氢钠&，昨天下午，记者紧急联系事发地的山东省招远市质量技术监督局，该部门已经开始对&德胜达龙口粉丝&进行抽检。

It is harmful to mice Hippocampus that mice is chronically fed with formaldehyde sulphoxylate solution.

次硫酸氢钠甲醛较长时间喂食对小鼠海马有损伤作用。

And 1‰ test groups were fed with 0.4‰, 0.8‰, 1‰ formaldehyde sulphoxylate solution. In the 10 and 30 day, the mice were killed, the cerebrum tissuce were took out, and fixed in the Zamboni fixation solution, conventionally produced frozen section and stained by immunohistochemistry.

对照组小鼠喂食静置自来水；实验组小鼠分别代以0.4‰、0.8‰、1‰次硫酸氢钠甲醛溶液喂食，10d和30d时分别处死各组小鼠10只，取出大脑，Zamboni固定液固定，常规冰冻制片，免疫组织化学染色，光镜观察。

The waste oils was esterified with continuous feeding methanol catalyzed by NaHSO4 as catalyst.

方法］在废油脂与甲醇连续进料的酯化反应条件下，研究了硫酸氢钠催化废油脂与甲醇酯化反应。

At the same time, with reference to the conditions of synthesis of methyl ester of salicylic acid, we combined ethyl ester of salicylic acid, salicylic acid-n-butyl, isobutyl salicylate, amyl salicylate, isoamyl salicylate and salicylic acid benzyl ester,besides, experimented the possibility for series of ester synthesis catalyst with Sodium bisulfate as a catalyst .

同时参照水杨酸甲酯的合成条件合成了水杨酸乙酯、水杨酸丁酯、水杨酸异丁酯、水杨酸戊酯、水杨酸异戊酯和水杨酸苄酯，实验了以硫酸氢钠为催化剂合成系列酯的可能性。

The results showed 3 types of aluminum compound prepared in this paper all had good poison protection effectiveness on such impurities as stannous chloride,lead oxide,sodium hydrogen sulfate,and so on.Moreover,the mechanism of the poison of catalyst was also discussed.

结果表明，合成的3种防中毒剂即防－1、防－2(主要成分为乙酰丙酮合铝)及防－3(主要成分为二乙酰丙酮基异丙氧基铝)对二月桂酸二丁基锡、氯化亚锡、二正丁胺、硫脲、氧化铅及硫酸氢钠等杂质均有较好的防中毒作用；不同防中毒剂对不同杂质的防中毒作用有一定的选择性。

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。