二钠

The crosslinked rubber with dicyclopentadienecrosslinkage was prepared by the reaction between the chlorohydrin rubberand the cyclopentadienyl sodium.

以环戊二烯基钠与氯醇橡胶反应，制得了含CPD侧基和双环戊二烯交联的聚合物。

Objective: To research possible restraining effect of sodium copper chlorophyllin on DMH-induced colorectal tumour in mice.

目的：研究叶绿酸铜钠对DMH (1，2-二甲基肼二盐酸盐)诱导的小鼠结直肠肿瘤的抑制作用。

The total iron in iron ore was titrated by potassium permanganate standard solution with sodium diphenylamine sulfonate as indicator.

用HNO3-HF处理，硫-磷混酸溶解试样，在盐酸介质中，用二氯化锡－三氯化钛将Fe(上标 3+)还原为Fe(上标 2+)，以二苯胺磺酸钠为指示剂，以高锰酸钾标准溶液滴定铁矿石中的全铁量。

Mesoporous zincum sulfide is synthesized by room-temperature method and hydrothermal technique, employing the surfactant cetyltrimethyl ammonium bromide, duodecimal alkyl sulfonic natrium and lauryl amine as templates. All kinds of technic parameters' influence to the synthesis has been systematically discussed, and the extracting of templates have been investigated.

本论文以十六烷基三甲基溴化铵、十二烷基磺酸钠及十二胺为模板，采用水热法和室温法合成了介孔硫化锌，系统探讨了各种工艺参数对合成材料结构特征的影响。

Influened the synthesis of ferrocene by the sodium ethylate method were researched in this paper.

研究了乙醇钠法合成二茂铁的影响因素：不同原料、原料配比、温度、时间、反应体系的氛围等，在选定的较优条件下，三茂铁的产率达到81.3％，并对二茂铁在柴油中的助燃、消烟作用进行了初步考察。

The process of diethyl carbonate synthesis by transesterification reaction of ethanol with ethylene carbonate,coproducing useful ethylene glycol was investigated using catalyst of sodium ethylate .

研究了以乙醇钠为均相催化剂，碳酸乙烯酯和乙醇酯交换合成碳酸二乙酯同时联产乙二醇的过程。

It was obtained with ethylenediamine and ethenesulfonic sodium as primary material through addition.

它是一种易降解的新型Gemini表面活性剂－N， N'-双癸酰基乙二胺二乙磺酸钠的中间体。

Including high-purity synthetic hydrobromide, hydrogen bromide acetic acid solution, hydrogen bromide acetone \ dichloromethane solution, sodium bromide, calcium, ammonium and other inorganic bromide, Bromochloromethane second bromomethane, 1 - bromo --3 - chloropropane organic bromide.

包括高纯度合成氢溴酸、溴化氢醋酸溶液、溴化氢丙酮\二氯甲烷溶液、溴化钠、钙、铵等无机溴化物，溴氯甲烷、二溴甲烷、1-溴-3-氯丙烷等有机溴化物。

According to the properties of acrylic acid series polymer of scale inhibition. A kind of amphiprotic tercopolymer of acrylic acid, acrylamide and dimethyldiallylammonium chloride is synthesised, with water as solvent, persulfate and hypophosphate as initiator. Through the tests, the copolymer can show the good scale inhibiting effect and bactericidal action, and become a multifunctional scale inhibition.

本研究根据丙烯酸聚合物阻垢剂的特点，使用过硫酸铵(NH_4_2S_2O_8、次亚磷酸钠(Na_2PO_3)构成的氧化——还原型引发剂，水为溶剂，合成了新型可用于处理工业循环冷却水的丙烯酸—丙烯酰胺—二甲基二烯丙基氯化铵两性型三元共聚物。

The pigment in colored cotton fibers was extracted by methanol at room temperature. The results of color reactions HCl-Mg reaction, NaBH4 reaction, NaOH reaction, FeCl3 reaction and Pb(Ac2 reaction of the pigment extractive showed that the pigment extracted by methanol was flavone or flavonol with two adjacent hydroxide groups (Table 2, Fig. 1). The results of UV spectral analysis further proved that the pigment extracted by methanol from brown fiber belonged to flavone with two adjacent hydroxide groups in B ring, and that from the green fiber contained not only flavone but also flavonols with two adjacent hydroxide groups both in A ring and B ring and indican replaced a hydroxide group at 3-site of A ring Fig.

通过盐酸－镁粉反应、四氢硼钠还原反应、碱反应、醋酸铅反应、氯化铁反应和紫外光谱吸收的分析表明，甲醇室温提取的棕色棉纤维色素可能是黄酮类化合物，B环上带有邻二酚羟基；甲醇室温提取的绿色棉纤维色素除黄酮类化合物外，还含有3-位羟基被糖甙化的黄酮醇类化合物，A、B环上都带有邻二酚羟基。

Shop assistant: Please check at the door.

店员：请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论，结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。