氯化磷

The total iron in iron ore was titrated by potassium permanganate standard solution with sodium diphenylamine sulfonate as indicator.

用HNO3-HF处理，硫-磷混酸溶解试样，在盐酸介质中，用二氯化锡－三氯化钛将Fe(上标 3+)还原为Fe(上标 2+)，以二苯胺磺酸钠为指示剂，以高锰酸钾标准溶液滴定铁矿石中的全铁量。

In the presence of the combination of sulphuric and phosphoric acid, with sodium diphenylamine sulfonate as the indicator, standard solution of potassium dichromate was used to titrate total iron value.

试样以盐酸溶解后，在酸性介质中，先以氯化亚锡将三价铁大部分还原为二价，然后在钨酸钠指示下，再以三氯化钛将剩余的三价铁还原为二价，过量的三氯化钛以重铬酸钾氧化消除干扰，在硫磷混合酸存在下，以二苯胺磺酸钠为指示剂，用重铬酸钾标准溶液滴定全铁量。

Hydroxy-5, 10-dihydrophenophosphazine 10-oxide (1) reacted with SOCl2, and then with MeONa in MeOH to give a methyl phosphinate (2) which can be converted to a dinitro compound 3 (62%) by nitration and the resulting dinitro compound 3 can further be converted to 2, 8-diamino-10-methoxy-5, 10-dihydrophenophosphazine 10-oxide (4, 71%) by hydrogenation over Pd/C (w = 0.05). And the effect of amount of Pd/C (w = 0.05) on the reduction was also studied.

10－羟基－5，10－二氢磷杂吖嗪－10－氧化物（1）经醯氯化、甲基化得到10－甲氧基－5， 10－二氢磷杂吖嗪－10－氧化物（2），2经硝化得到10－甲氧基－2，8－二硝基－5，10－二氢磷杂吖嗪－10－氧化物（3，62%）。3在Pd／C（w = 0.05）存在下，用氢气还原为2，8二氨基－10－甲氧基－5，10－二氢磷杂吖嗪－10－氧化物（4，71%），考察了Pd／C（w = 0.05）用量对氢化还原反应的影响。

The Beckmann rearrangement of cyclohexanone oxime was effectively realized to prepare e-caprolactam by using phosphorous trichloride (PCl3) as catalyst in a two-phase system composed of 1-n-butyl-3- methylimidazolium tetrafluoroborate ([BF4]) ionic liquids and toluene.

在1丁基3甲基咪唑四氟硼酸盐([BF4])与甲苯组成的两相体系中，以三氯化磷(PCl3)为催化剂，实现了由环己酮肟制备己内酰胺的液相贝克曼重排反应，两相体系有利于反应控制和体系取热。

Dimethyl phenyl phosphonite had been synthesized from benzene, phosphorus trichloride and methanol in two steps.

以苯、三氯化磷、甲醇为主要原料，经两步反应合成了苯基亚膦酸二甲酯，并通过正交实验优化了合成条件。

And under the condition of stirring, a small quantity of chlorobenzene and a proper quantity of initiating agent can be added, and the mixed solution prepared by using chlorobenzene , phosphorus trichloride and organic solvent can be slowly drop-added until the reachion is completed.

在高速搅拌下，加入少量的氯苯及适量的引发剂，然后缓慢滴加氯苯、三氯化磷和有机溶液的混合溶液直至反应完成。

The heaxamethylene-diamine, 2-chloroethylene-sulfonate, fatty acid and Phosphorus trichloride are used as raw materials and a series of Gemini products are synthesized.

并以己二胺、2-氯乙基磺酸钠、脂肪酸和三氯化磷等为原料合成了一系列的双酰胺双磺酸盐表面活性剂N，N＇-双脂肪酰基己二胺二乙基磺酸钠。

Of Yangquan City was built in 1957, enterprises are equipped with 4 sets of milling machines, 4 sets of wet-sanding machine, Enamel Reactor 6, stainless steel reactor 7, a set of phosphorus trichloride production plant.

阳泉市璜粉有限公司建于1957年，企业装备有4台磨粉机，4台湿式砂磨机，搪瓷反应釜6个，不锈钢反应釜7个，一套三氯化磷生产装置。

Disclosed is a method to prepare 3, 3-dimethyl butyric acid chloride, relating to an organically synthesized intermediated compound and particularly relating to a method to prepare 3, 3-dimethyl butyric acid chloride from 3,3-dimethyl butyric acid and phosphorus trichloride.

3，3-二甲基丁酰氯的制备方法，涉及一种有机合成中间体，尤其是涉及一种由3，3-二甲基丁酸与三氯化磷反应制备3，3-二甲基丁酰氯的方法。

Bis (2,4-di-tert-butyl-phenyl) pentaerythritol diphosphite (antioxidant 626) was synthesized with pentaerythritol, di-tert-butylphenol and phosphorus trichloride.

以季戊四醇、三氯化磷和2，4-二叔丁基苯酚为原料，在实验室合成了双（2，4-二叔丁基苯基）季戊四醇二亚磷酸酯。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。