Synthesis of p-Anisidine was studied by reducing p-Nitro Anisole with hydrazine hydrate in the presence of Pd/C catalyst.

研究以Pd/C催化劑催化水合肼還原對(duì)硝基苯甲醚合成對(duì)氨基苯甲醚的工藝超碰日韩精品在线看。

A quantum chemistry calculation for the crystal structure of 4- benzaldehyde-2,4-dinitro phenyl hydrazone was performed by using Gaussian98 with B3LYP/6-31G basis sets.

利用Gaussian98程序欧美国产日韩综合精品一区二区，采用密度泛涵方法(B3LYP/6-31G)對(duì)4-苯甲醛縮-2精品人妻系列无码专区不卡，4-二硝基苯腙化合物的晶體結(jié)構(gòu)進(jìn)行了量化計(jì)算欧美亚洲国产一区二区三区VA，利用相關(guān)參數(shù)推測(cè)了它的分子特性日韩欧美亚综合视频，結(jié)果表明色小说亚洲色图，該化合物的分子結(jié)構(gòu)為一大平面結(jié)構(gòu)，難與金屬形成配合物

It was concluded that the addition of Hydroquinone can accelerate the reaction drastically.

在一定范圍內(nèi)硝基苯降解率與對(duì)苯二酚的加入量成正比欧美性爱a视频。

Some research and analysis on the reaction of 2,4-difluoronitrobenzene and nucleophilic reagent alcohol sodium (methyl alcohol ,ethyl alcohol, propyl alcohol, n-butyl alcohol, t-butyl alcohol, et hl) and the reaction choice of opposite -F in different solvent and conditions have done in this paper.

論文以2美女A片一级a_级a毛片，4-二氟硝基苯為主要原料，研究了其與親核試劑醇鈉(甲醇久久精品国产999久久久、乙醇91最新国产中文字幕、丙醇、正丁醇www色视频操13、叔丁醇等)在不同溶劑中的反應(yīng)情況色综合热无码热国产，討論了在幾種代表性的溶劑——醇、四氫呋喃国产办公室毛片高潮A片、苯久久毛片免费全部播放无码、N，N-二甲基甲酰胺中親核取代反應(yīng)的情況久久riav25.co，研究了溫度亚洲A∨无码乱码在线观着性色、反應(yīng)時(shí)間、親核試劑国内精品视频久久、溶劑等條件對(duì)親核取代反應(yīng)的影響一区二区免费视频在线观看。

The paper analgses nitrobenzene and benzene in polluted water of TongJiang section,TongJiang Dong Gang section and Bacha section of songHuaJiang and HeiLongJiang river.

本文通過(guò)對(duì)雙苯污染帶流經(jīng)松花江和黑龍江的同江斷面、同江東港斷面及八岔斷面監(jiān)測(cè)分析视频在线精品，對(duì)同江段水質(zhì)受硝基苯污染的狀況作出了科學(xué)的分析評(píng)價(jià)日韩精品免费人成视频观看。

The acute toxicity of three kinds of typical chemicals to alga、cladoceza and swordtail fishwere studied, and safety assessment was also made.

采用水體中3個(gè)營(yíng)養(yǎng)級(jí)別的水生生物測(cè)試鹵代酚類超粉嫩000福利视频合集、硝基苯類92在线精品午夜视频在线观看、烷基苯類典型有毒有害化學(xué)品對(duì)水生生物的急性毒性，同時(shí)對(duì)上述物質(zhì)對(duì)水生生物的安全性進(jìn)行初步評(píng)估，并預(yù)測(cè)了上述物質(zhì)對(duì)水生生物的環(huán)境安全濃度久久精品视频无。

In the aqueous solution of sodium hydroxide,benzoylformic acid can coordinate with 2,4-dinitrophenylhydrazine to form a complex which has maximum absorption at 458 nm.Thus the content of benzoylformic acid can be quantitatively determined.

在氫氧化鈉溶液中欧美老人大屄到阴唇操逼视频，苯乙酮酸和2，4-二硝基苯肼形成一種紅棕色的溶液久久久久9999国产精品，該溶液在458 nm處有最大吸收国产日韩欧美最新，據(jù)此可以快速分析混合物中苯乙酮酸的含量。

The stronge interaction between EMimBF4 and nitrobenzene, and its intermediates yielded in the process of electroreduction caused the selective reaction.

通過(guò)控制電位美妇福利视频，可以選擇性地合成氧化偶氮苯和偶氮苯日韩精品无码9p；在EMimBF4中，硝基苯和水的濃度變化對(duì)電化學(xué)行為產(chǎn)生較大影響日韩无码啪啪片。

Determination of Phenylenediamine in Oxidative-type Hair Dyes by Capillary Column Gas Chromatography;2. The production condition and technology of m-phenylenediamine are introduced.

介紹了我國(guó)間苯二胺的生產(chǎn)現(xiàn)狀及工藝影音先锋AV资源网无码,国产v，指出采用粗品混合二硝基苯直接加氫是制備間苯二胺最好的方法，具有成本低久久精品微拍国产微、污染小等優(yōu)點(diǎn)99久久久久。

Cooking at the course functional groups of residual lignin changes, methoxyl content decreased, from 15.42% dropped to 12.35%, the phenolic hydroxyl group content and carboxyl content has increased, from 2.08% rosed to 3.17%, carboxyl content from 5.36% rosed to 5.99%.

木質(zhì)素研究指出：甜竹原料木質(zhì)素中C9單元式甲氧基含量與青皮竹比較相近、分子量主要集中在小于4000組分(占50.5%)而大于16000只占少量美女黄片毛片在线看、甲氧基含量為15.42%日韩精品无码一区二区三区99、酚羥基含量2.08%、羧基含量5.36%日黄特一级黄色A片、硝基苯氧化結(jié)果摩爾比為