In the reaction of substituted arylamine and sulfuric acid, and utilizes the feature of that said inert organic solvent is easy to form azeotrope with water to continuously deliver the water produced in the couse of reaction from the reactor.

本發(fā)明在取代芳胺與硫酸的反應中加入了一種惰性的有機溶劑，如：氯苯九九C片一级黄片，二氯苯永久黄网播放站色视频免费，三氯苯，硝基苯等丝袜人妻无码中文字幕综合网，利用其易與水形成共沸物的特點seqiqi999，將反應生成的水不斷地導出反應器。

This paper also reports the fusion curves of carbon tetrachloride, chloroform, bromoform, silicon tetrachloride, benzene, nitrobenzene, bromobenzene and chlorobenzene at pressures up to 3500 MPa between 226 K and 915 K.

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The hydrogenation of crude dinitrobenzene is the best production technology of m-phenylenediamine .

介紹了我國間苯二胺的生產(chǎn)現(xiàn)狀及工藝，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日日干日日射日日操，具有成本低樱桃视频iosapp、污染小等優(yōu)點。

Synthesis and Property Study of Rare Earth Complexes with 2-Carboxybenzaldehyde-2, 4-dinitrophen Hydrazone

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Besides, the derivatives were synthesized successfully by the similar acid binding agent system, such as tris(4-nitrophenyl) thiophosphate, tris(4-toluene)thiophosphate. The derivative of maleic anhydride was synthesized by the simple method, and its yield was above 90%.

采用類似的縛酸劑體系成功地合成了硫代磷酸三(4-硝基苯)酯毛片高清无码在线、硫代磷酸三(4-甲基苯)酯，并用簡單的方法合成了硫代磷酸三(4-氨基苯)酯的馬來酸酐衍生物——硫代磷酸三(4-馬來酸氨基苯)酯影音先锋强奸乱伦av电影，產(chǎn)率達90％以上。

The synthetic organic chemicals, such as phenol, m cresol, phloroglucinol, phenylamine, 3,5 xylenol, p tertiary butyl phenol, nitrobenzene, tert butanol and chloral were oxidized in supercritical water system.

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This paper proposes a method for the determination of 4-hydroxy-3-nitro-benzenearsonic acid and arsanilic acid in the nitration reaction product of arsanilic acid by ion-pair chromatography.

本文提出一種用于測定對氨基苯胂酸硝化反應產(chǎn)物中4-羥基-3-硝基苯胂酸及對氨基苯胂酸含量的離子對色譜法，選擇甲醇：水=25：75作為流動相4444色视频在线，0www高清激情无码免费视频大全。

The antioxidant activity of the dried extracts was characterized by peroxide value assay in lard and 1, 1-diphenyl-2-picryl hydrazyl radical method.

采用油脂過氧化值法和二苯三硝基苯肼自由基法研究了提取物的抗氧化活性。

The resin is prepared by swelling chlorine balls in a solvent such as nitrobenzene; adding catalyst to obtain polystyrene-divinylbenzene adsorptive resin; removing reaction mother solution; washing to remove residual solvent and catalyst; swelling; adding pyrane reagent to further react with chloromethyl residual on inner and outer surfaces of the resin to obtain the pyranyl modified adsorptive resin with the composite function.

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The solid-liquid reaction method was used for the preparation of HPLC aryl-bonded silica gel stationary phases, including 3, 5-dinitrobenzyl, quinolinyl ether and 1, 1'-di(2-naphthol) ether bonded silica gel stationary phases by using N-(β-aminoethy1)-γ-aminopropylmethyldimethoxy silane and 3-glyci-doxypropyl trimethoxylsilane as coupling reagents, respectively.

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