硫酸氢钠

Different factors such as mole ratio of reactants, temperature and reaction time were studied by orthogonal test.

以硫酸氢钠为催化剂在高压釜中合成水杨酸乙酯，采用正交实验研究了醇酸摩尔比、温度、时间等因素对反应的影响。

The results showed that sodium bisulfate was an excellent catalyst.

研究表明，硫酸氢钠是合成硝基卡因的良好催化剂。

The reaction process was confirmed and the performance of sodium bisulfate catalyst was also compared with other acid catalysts.

硫酸氢钠难溶于反应体系，后处理简单，副反应少，可重复使用，较其它相关催化剂具有突出的性能。

It studies the synthesis of n-butylacetate with acetic acid n-butanol as raw material,sodium bisulfate monobydrate as catalyst.

以一水合硫酸氢钠为催化剂，冰乙酸与正丁醇为原料合成了乙酸正丁酯。

The effects of the sodium bisulfate dosage, reaction temperature, water content, methanol flow rate on the conversion rate of waste oils were investigated.

考察了硫酸氢钠用量、反应温度、反应体系含水量、甲醇流量等对酯化反应转化率的影响。

Meanwhile, the sudden, a responsible person of the company said that the quality of their works are all complete, Formaldehyde has no part in the production of sodium bisulfate.

与此同时，对于突然出现的情况，该公司的一位负责人表示，自己厂的所有资质都齐全，不会出现有甲醛次硫酸氢钠加入生产的情况，该人士建议记者可以上他们网站查看资质许可证。

Meanwhile, the sudden, a responsible person of the company said that the quality of their works are all complete, Formaldehyde has no part in the production of sodium bisulfate. The reporter suggested that the website they can check the quality permit.

与此同时，对于突然出现的情况，该公司的一位负责人表示，自己厂的所有资质都齐全，不会出现有甲醛次硫酸氢钠加入生产的情况，该人士建议记者可以上他们网站查看资质许可证。

The reaction was investigated in the synthesis of maleate using maleic anhydride and methanol as raw materials and solid acid as catalyst, and it was found that sodium bisulfate catalyzed the reaction more efficiently than that of molecular sieve.

考察了固体酸对顺丁烯二酸酐和甲醇合成马来酸酯的催化作用，结果表明，硫酸氢钠比分子筛的催化效果好。

"Formaldehyde sodium bisulfate," is a toxic industrial bleach, the human body have serious side effects, the state is strictly prohibited as a food additive in food use.

&甲醛次硫酸氢钠&是一种有毒的工业用漂白剂，对人体有严重的毒副作用，国家严禁将其作为食品添加剂在食品中使用。

The research aimed to study the esterification of waste oils catalyzed by sodium bisulfate and provide references for the production of biodiesel by solid acid catalyzed wasted oils.

［目的］研究硫酸氢钠对废油脂酯化催化作用，为固体酸催化废油脂生产生物柴油的研究提供参考。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。