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大本虫木虫 (著名写手)
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[求助]
法语翻译求助
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谁帮忙翻译下啊? 法语.jpg |
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yifeng1206
铁杆木虫 (著名写手)
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大本虫: 金币+35, 翻译EPI+1, ★★★很有帮助 2015-12-06 16:58:47
大本虫: 金币+35, 翻译EPI+1, ★★★很有帮助 2015-12-06 16:58:47
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The solid materials, who will soon be deposited, was separated by filtering. It weighed 5 gr., and contained, furthermore a little of symmetric trichloroaniline, the colorful accessory products. We poured the mother-liquor into a grand quantity of water, who provide a flocculent precipitate, slightly colored, weighted 19 gr. This product was a mixture of symmetric trichloroaniline (18 gr.), melting point at 78 °, and dichlorineobenzoic acid (1 gr.). By heating with caustic lye, the acid was dissolved, while melt trichloroaniline was driven in part by the water vapor. After cooling and filtration, we get dichloraminobenzoique acid by acidification of the filtrate. It is not totally colorless. Here is the analyses of the product. |
3楼2015-12-06 16:50:22
yifeng1206
铁杆木虫 (著名写手)
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2楼2015-12-06 16:18:42
大本虫
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4楼2015-12-06 16:58:32
yifeng1206
铁杆木虫 (著名写手)
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大本虫: 金币+35, ★★★★★最佳答案 2015-12-07 07:49:07
大本虫: 金币+35, ★★★★★最佳答案 2015-12-07 07:49:07
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好吧，友情翻译一段。 不过你这个是跟谁的对话吗？还是博士论文中的一段讨论？ I have prepared the 3-5-dichloro-4-aminobenzoique acid, that I was not able to find in the references, by chlorination of p-aminobenzoique acid. This preparation gave more difficulty than similar bromination, because the carboxyl group was abandoned so easily, that most part of the material is transformed into symmetric trichloraniline. Moreover it formed, maybe because of the oxidation, the colored products, however, which we can remove easily. It is not impossible that we can improve the yield of dichoraminobenzoque acid by a change of procedure. I did not study this because I have had enough materials for the experiement, that I want to do. For the preperation of produit, 20 g p-aminobenzoique acid were dissolved into 600 ml glacial acetic acid and mixed to 400 ml contrated chlorhydride acid. So we get a fine suspension. Then 12 g potassium chlorate was introduced by small amount, all in stirring and cooled in the help of a mixture of ice-salt. During the chlorination, the suspension took a darker color. At the end of the reaction, we add again a little of sodium sulfite solution, to be sure that there was not excess chlorine anymore. |
5楼2015-12-06 18:09:16