二钠

Chapter two 4-Hydroxybenzoic acid is connected with PEG6000 through defoliant DCC at rooom temperature, then the product is refluxed with chloroacetic acid in acetone to afford PEG-bound phenyloxyacetic acid, which is reacted with thionyl chloride, ammonium thiocyanate and arylamines in turn to give PEG-bound disubstituded thioureas. After the cleavage with sodium methoxide in methanol, the eleven disubstituted thioureas are obtained.

第二章 利用PEG6000作载体，通过脱水剂DCC在室温下将对羟基苯甲酸以酯键连接在PEG6000上，再与氯乙酸在较温和的条件下生成PEG6000支载的芳氧乙酸，然后，依次与亚硫酰氯、硫氰酸铵、芳胺反应，生成PEG6000支载的硫脲，最后用甲醇钠的甲醇溶液切割PEG，得到了十一种1，3-二取代硫脲。

The properties of this surfactant were examined by numbers, including surface tension, foaming power, wetting power, emulsification, detergence, dispersion ability, stability in hard water and thermal stability.

对产物双十二烷基乙氧基二硫酸酯钠进行系统的性能研究，包括表面张力、泡沫力、润湿力、乳化力、去污力、分散力、在硬水中的稳定性和热稳定性等。

Dialdehyde cellulosewas produced by oxidizing neighbor hydroxyl of microbial cellulose with sodium periodate in heterogeneous system in this paper.

本文采用细菌纤维素为原料，高碘酸钠为氧化剂，在不同氧化条件下制备了不同氧化程度的二醛纤维素。

The synergic effects between 1,4-Bis(α-alkylpyridinium)butane/hexane Dibromide gemini surfactantsand sodium dodecyl benzoic sulfatehave been studied,the effect of the ratio of GPS/SDBS on the surface tension and critical micellar concentrationof the mixture have been investigated.

研究了溴化1，4/1，6-双-α-烷基吡啶丁烷/己烷双子表面活性剂与普通阴离子表面活性剂十二烷基苯磺酸钠之间的协同效应，考察了二者复配比例对体系表面张力和临界胶束浓度的影响。

Cefminox sodium reacted with 2,4 dinitrophenol to form a charge transfer complex in methanol acetone and can be quantitatively determined by spectrophotometric method at 403 nm.

利用头孢米诺钠与2，4 二硝基苯酚在甲醇丙酮介质中反应，形成电荷转移络合物，采用分光光度法测定。

Silver nanowires with clean surface were synthesized via the redox reaction between Sodium diphenylamine sulfonate and AgNO in the absence of surfactant, seed, and nanoporous membrane and at room temperature for the first time.

首次在室温，和不用表面活性剂、无机硬模板、晶种的条件下，通过二苯胺磺酸钠和硝酸银的氧化还原反应，制备了表面洁净的银纳米线。

Objective To observe the effect of menadiol sodium diphosphate induced mutation.

目的 观察甲萘氢醌二磷酸酯钠的诱变作用。

WPA ; reaction ; crystallization ; food additive ; disodium hydrogen phosphate

本研究针对原料所含杂质、食品添加剂磷酸二氢钠得率问题以及生产

The combined ether layers were treated with sodium dithionite and washed with water (3 10 mL).

合并醚层治疗钠连二和水洗。

NaHCO3 (0.1 M) buffered 0.1 M sodium dithionite (Na2S2O4) at 40 °C was used to release soluble reactive PBD from FeIII oxyhydroxides under low redox conditions.

碳酸氢钠（ 0.1米）缓冲0.1米的连二亚硫酸钠（ Na2S2O4 ）在40 ° C被用来释放可溶性反应PBD从FeIII oxyhydroxides低氧化还原条件。

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。