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二羟基苯

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Two: Synthesized a novel rhodamine derivative with a single amidogen, then analyzed and characterized the dye by 1H NMR and EI-MS.

二、以对硝基苯甲醛和八羟基久洛尼定为原料,合成了一种新型的罗丹明荧光染料,并通过核磁共振、质谱等手段对染料结构进行了表征。

The optimal separating condition of chromatography analysis was: Shimadzu VP-ODS 150mm4.6mm as chromatographic column; acetonitrile/water (12/88,V/V, Contained 1.25mmol/l phosphoric acid) as mobile phase with flow rate of 1.0ml/min. Macroporous ion exchange resins and activated carbon were applied to enrich the trace level impurities and the main impurities was determined by LC-MS and GC-MS.They were : Benzonitrile , 2-Methyl-8-hydroxyquinoline, 2,6-Pyridinediamine , O-ethyloxime Cyclo-hexanone and compound with 220 molecular weight .

采用离子树脂和活性炭吸附富集这些微量的杂质,并通过液质联用和气质联用对杂质进行了定性分析,鉴定了影响290nm吸收的主要杂质为苯甲腈,2甲基-8羟基喹啉,2,6二氨基吡啶,O-乙基环己酮肟和分子量220的物质。

Hydroxy-2-methyl-1-phenyl propan-1-one (1173) was a more effective photoinitiator to these monomers than that of benzophenone.

与二苯甲酮相比,2-羟基-2-甲基-1-苯基丙酮(1173)对两种单体具有较好的引发效果。

One method of preparation new membrane materials was presented with putting multi-wall carbon nanotube and carboxylic multi-wall carbon nanotube in collodion solution. Carbon nanotubes complex filtering membranes can be obtained by salivate method. Resorcin and alizarin red can be percolated using new membrane individually.

分别将碳纳米管和羟基化碳纳米管均匀分散在火棉胶溶液中,采用流涎法制备出碳纳米管复合膜;并用分光光度法对样液、滤液中的间苯二酚和茜素红的吸光度进行了对比测定,以考察膜的吸附性能。

Benzene,pitch coke, phenol,ocresol,m,pcresol,xylenol,coumarone resin,ammonium sulphate,pure naphthalene,quinoline,refined quinoline 98%,isoquinoline,8hydroxyquinoline,2methyl naphthalene,anthraquinone,carbazole,carbon black.

纯苯,沥青焦,苯酚,邻甲酚,间对甲酚,二甲酚,古马隆树脂,硫酸铵,精萘,喹啉,精喹啉,异喹啉,8羟基喹啉,2甲基萘,蒽醌,咔唑,炭黑。

2,4,4,trichloro-2,-hydroxydiphenylether(HD-244) is one of the most well-marked germicide and germ inhibitor.

中文摘要: 2,4,4'-三氯-2'-羟基二苯醚(HD-244)是市场畅销的一种杀菌剂。本文介绍了 HD-244 的三种合成工艺,并进行了比较。

The catalytic activity was characterized by the reaction of hydroxylation of phenol.

并用苯酚羟基化合成苯二酚作为探针反应,考察了TS-1膜的催化活性。

In chapter 3, Fe-EDTA chelate-induced aromatic hydroxylation of terephthalate as a new method for the evaluation of hydroxyl radical-scavenging ability was studied.

第三章利用Fe-EDTA引发对苯二甲酸芳环羟基化反应建立了一种评价抗氧化剂清除·OH能力的新型荧光分析法。

Two coordination polymers composed of in situ synthesized ligand deriving from isophthalic acid through the hydroxylation on the 2-position have been synthesized under hydrothermal conditions.

利用铜离子的氧化还原性质,以铜离子和间苯二甲酸在水热条件下反应使配体发生羟基化衍生成2,6-二羧基苯酚,并组装出2个含衍生配体的配位聚合物。

P hydroxybenzoic acid ; oligomer ; PET ; transesterification ; block copolymer

对羟基苯甲酸;齐聚物;聚对苯二甲酸乙二醇酯;酯交换反应;嵌段共聚酯

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It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发,分析对称连杆曲线上鲍尔点的产生条件,提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品,年生产总值3000万美元,产品价廉物美、选料上乘、质量保证,深受国内外客户的青睐

The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.

血精的原因很,以良性病变为主。