甲苯

The optimization reaction condition is that using the mixture catalyst of phosphorous acid ester and dihydrogen phosphate, and toluene as solvent, at 105 oC and refluxing 30 hours, the yield is 90% with purity over 95%.

在最佳条件下，即在混合催化剂亚磷酸酯/磷酸氢盐的作用下，以甲苯为溶剂，在105 ℃反应30 h，酯化收率90%，纯度95%以上。

The paper introduced that VOCs exhaust gas in packing printing house was treated by FCJ organic gas purification equipment,which is based on adsorption and catalytic combustion principle.

前言包装印刷厂的主要产品为各种塑料薄膜的印刷制品，在产品生产中大量使用彩色油墨和有机稀料，油墨用的稀料主要是甲苯、乙酸乙酯及少量丁酮。

The products used are Chemlok 205 primer diluted 1:1 with methyl ethyl ketone and Chemlok 233X cover coat diluted 1:3 with toluene.

所用产品为Chemlok 205 底胶用一倍量甲基乙基酮稀释，和Chemlok 233X 盖层用3倍量甲苯稀释。

To the residue add a few millilitres of toluene R and heat again until the acetone is completely removed.

再加入几毫升的甲苯，继续回收至丙酮完全消除。

Citric acid lauryl alcohol ester was synthesized by the esterification of citric acid with lauryl alcohol using p methylbenzenesulfonic acid or cation exchange resin as the catalyst.

分别用阳离子交换树脂和对甲苯磺酸催化柠檬酸和月桂醇进行酯化反应，合成了柠檬酸月桂醇酯。考察了催化剂用量、原料配比、反应时间和反应温度等对合成反应的影响，优化了合成工艺条件。

A yellow crystalline compound that is a flammable toxic derivative of toluene; used as a high explosive .

一种黄色的晶体状混合物，是甲苯易燃有毒的衍生物，用作烈性炸药。

Phospho-tungstic heteropoly(H3PW12O40) was prepared and its catalytic performance for synthesizing of ethyl hexanoate from hexanoic acid and ethyl alcohol were studied.

结果表明：磷钨杂多酸是合成己酸乙酯的良好催化剂，当酸醇物质的量比为1∶2.0，催化剂用量为0.5 g/0.1 mol己酸，甲苯为8 mL，反应时间为150 min时，酯化率可达97.2

An improved chemical method for the determination of the molar substitution degree of hydroxyethyl guar gum has been described.

本文用模型小分子一缩二乙二醇的醚键断裂实验证明了可行性，羟乙基瓜尔胶上的羟乙基链段与过量对甲苯磺酸-乙酸酐在130℃下反应14hr，醚键完全断裂生成酯，并在pH=11条件下煮沸1hr使酯完全水解，转变为乙二醇。

In this report, we wish to report our results on "sodium p-toluenesulfinate in free radical reactions".

本研究报告是这一年来本实验室在有关对甲苯亚磺酸钠与烯类化合物的自由基反应的研究结果。

At 80℃, the yield of esterification of benzoic acid with ethanol could reach 95% by using 10% catalyst for 6 h; the conversion of toluene in the nitration with 1 equiv. of 65% nitric acid could be achieved to 99% by using 5% catalyst for 5 h.

在80℃下，摩尔分数为10%的Yb(NTf2)3负载催化剂，反应6h可使苯甲酸乙酯的产率达95%；摩尔分数为5%的Yb(NTf2)3负载催化剂，反应5h可使甲苯与等摩尔质量分数为65%硝酸的硝化反应转化率达99%。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。