二硝基酚

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

在一定范围内硝基苯降解率与对苯二酚的加入量成正比。

N-Methyl-3,3-dimethyl spiroindoline-2,3'[3H] naphthaline [2,1-b] [1,4] oxazine was synthesized by 1,3,3-trimethyl-2-methylene indoline and 1-nitroso-2-naphthol, its UV and IR spectra and elemental analysis were carried out, and the photochromism and main influencing factors such as temperature, solvent and pH were studied.

以1，3，3-三甲基－2-亚甲基吲哚啉和1-亚硝基－2-萘酚为原料合成了N-甲基－3，3-二甲基螺吲哚啉-2，3'[3H]萘并[2，1-b][1，4]恶嗪，对其进行了紫外和红外光谱以及元素分析，并对其光致变色性质以及主要影响因素温度、溶剂和pH进行了研究。

We have 1500 tons / year of pure m-cresol production line, 1,000 tons / year of p-nitrobenzoic acid production line and 2000 tons / year production line of the one resorcinol.

我们拥有1500吨/年纯间甲酚生产线、1000吨/年对硝基苯甲酸生产线及2000吨/年间苯二酚生产线各一条。

Methods Using 4-chloro-2-nitroaniline as a starting compound, followed by substitution, reductive cyclization, oxidation, and chlorination, to give the key intermediate 2,7-dichloroquinoxaline (7), which reacted with different phenolic compounds to afford quinoxaline derivatives.

方法以4氯2硝基苯胺为起始原料经取代、还原关环、氧化、和氯代合成了中间体2，7二氯喹喔啉(7)，再在喹喔啉的2位引入不同的取代酚结构单元，合成了一系列共9个新喹喔啉衍生物。

Our company is the production of resorcinol, p-nitrobenzoic acid, pure phenol inter-professional manufacturers.

我公司是生产间苯二酚、对硝基苯甲酸、纯间酚的专业厂家。

Resorcinol and 2-nitrodiphenylamine may be used as stabilizers.

间苯二酚和2-硝基二苯胺可用作安定剂。

The reaction conditions for synthesizing methylhydroquinone using p nitrotoluene and conc.H\-2SO\-4 in the presence of catalyst were studied experimentally with the uniform design method,and the major influencing factors were researched.

用均匀设计法实验研究了对硝基甲苯与浓硫酸在催化剂作用下合成甲基对苯二酚的反应条件，考察了各种影响因素。

In order to decrease copolymerization loss of isoprene during thermal dimerization of cyclopentadiene in C5-fraction,the effect of three inhibitors,diethylhydroxylamine,p-tert-butylcatechol and o-nitrophenol,on dienes' polymerization in the process was investigated by experiment with sealed glasstube.

为减少C5馏分环戊二烯热二聚过程中异戊二烯的聚合损失，采用封管实验方法考察了添加阻聚剂二乙基羟胺、对叔丁基邻苯二酚、邻硝基苯酚对热二聚过程中各二烯烃组分聚合程度的影响。

Among the special nine pollutants, however, eight of them, including Hexachlorobenzene, N-Nitrosodi-N-propylamine, 3,3-dichlorobenzidine, 2,4,6-trichlorophenol, 2,3,4,5,6-pentachlorophenol, indeno (1,2,3-cd) pyrene, 4,4'-DDT and Heptachlor were in need of concern while another chemical: dibenzanthracene be of special concern. The sources of these chemicals were discussed and some control strategies were suggested based on the risk assessment.

结果表明，有18种有机污染物超过了USEPA的标准浓度要求，其中9种物质具有一定的生态风险，其中六氯苯、N-亚硝基二正丙胺、3，3'-二氯联苯胺、2，4，6-三氯酚、五氯酚、茚并(1，2，3-cd)芘、4，4'-滴滴涕、七氯在内的8种化合物具有一定的风险，而多环芳烃二苯并蒽需要引起更高警惕；在此基础上探讨了这些化合物的来源及作用，并提出了相应的防治建议。

Finally, N ethey[3,3 dimethyl spiralindoline naphthoxazine]was synthesized by the addition of 1 nitroso 2 naphthol also,the photochromic mechanism of the substance and its photochromic phenomenon in ethanol were studied.

报道了以苯肼和 3 甲基 2 丁酮为原料首先合成 2 ，3 ，3 三甲基吲哚，吲哚再与碘乙烷亲核取代，碱化得费舍尔碱，最后与 1 亚硝基 2 萘酚作用合成N 乙基 [3 ，3 二甲基螺吲哚啉萘并恶嗪 ]的全过程，并研究了该物质的变色机理以及在乙醇溶剂中的光致变色现

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失