查询词典 sodium nitrite

Initial experiment showed that the aromatic compounds were brominated to corresponding bromides with hydrobromic acid or bromine as brominating agent in the presence of sodium nitrite under the mild conditions.

研究发现在NaNO_2存在时，氧气能够以HBr(或Br_2)为溴化试剂，在温和条件下将芳香化合物氧化溴化生成相应的溴代芳香化合物。

This research mainly adopts experiment, survey questionnaire, interview method, the experimental chemistry of several typical topic such as "separation of iodic element of kelp and inspection" and the properties of aluminum compounds "toothpaste and match in some ingredients" sodium nitrite and identification of salt experimental subjects were studied.

本研究主要采用实验法、调查问卷法、访谈法，对《实验化学》中的几个典型课题如&海带中碘元素的分离及检验&&铝及其化合物的性质&&牙膏和火柴头中某些成分的检验&&亚硝酸钠和食盐的鉴别&等实验课题进行研究。

The C_(60)-fused tetrahydrofuran derivatives are excellent synthons for further functionalization.While treated with different equiv,of BF_3·OEt_2 at various temperature,several novel functionized fullerene derivatives have been successfully synthesized.2.1,4-Fullerenols C_(60)ArOH were synthesized via the reaction of[60]fullerene with 4-substituted phenylhydrazine hydrochlorides and sodium nitrite under moisture and aerobic conditions.

这种四氢呋喃环合富勒烯衍生物作为一个合成中间体又可发生进一步的衍生化反应，其与不同当量BF_3·OEt_2在不同温度条件下可以得到二氢呋喃环合富勒烯衍生物、三元环合富勒烯衍生物等。2。

The AZO dye GGHC-1 was got by coimcidence reaction with p-methoxybenzenamine after reoxidation reaction by Congo red and sodium nitrite.

1引言应LCD产业发展的需要，20世纪90年代出现了彩色偏光膜，它们是利用不同染料在可见光区吸收不同波长的光而产生各种色彩的。

The surface of natural scale graphite was modified by wet chemical method using sulfanilic acid and sodium nitrite as raw materials,which could remarkably elevate the hydrophilicity of natural scale graphite.

以对氨基苯磺酸、亚硝酸钠为原料，对天然石墨鳞片表面进行了接枝改性处理，显著提高了天然石墨鳞片的亲水性。

Similar to that, compared to the mouse model of memory impairments of acquisition, retention and retrieval induced by scopolamine, sodium nitrite and ethanol D-galactose, the blank control group, SZF group and positive control group could prolong the latency and reduce errors in step-down test and avoiding dark test.The result bioassay showed that SZF group incresed the activity of SOD and level of TChE and decreased the level of MAD in mice brain tissue.

东莨菪碱、亚硝酸钠和乙醇分别诱导的小鼠学习记忆获得、巩固和再现障碍实验结果表明，与模型组比较，在跳台和避暗测试中，空白对照组、SZF复方和阳性对照组均能延长跳台实验和避暗实验的潜伏期(P.01，P.05)，均能减少实验中的错误次数(P.01，P.05)。D-半乳糖、东莨菪碱、亚硝酸钠和乙醇诱导的小鼠脑组织生化测定的结果显示，与模型组比较有显著差异，SZF复方表现为能使脑组织中总SOD活力上升，MDA含量降低，TChE含量上升。

The aromatics were chlorinated to corresponding chloride with hydrochloric acid as chlorinating agent and trichloroisocyanuric acid as co-catalyst in the presence of sodium nitrite under mild conditions.

研究发现在NaNO_2存在时，氧气能够以HCl为氯化试剂，以三氯异氰脲酸为助催化剂，在温和条件下将芳香化合物氧化氯化生成相应的氯代芳香化合物。

The aromatics were chlorinated to corresponding chloride with hydrochloric acid as chlorinating agent and trichloroisocyanuric acid as co-catalyst in the presence of sodium nitrite under mild conditions.

研究发现在NaNO_2存在时，氧气能够以HCl为氯化试剂，(来源：dc3cdcABC论文网www.abclunwen.com)以三氯异氰脲酸为助催化剂，在温和条件下将芳香化合物氧化氯化生成相应的氯代芳香化合物。

The chemical components of the coriander seed essential oil,extracts of the residue and the ability of scavenging sodium nitrite were studied.

研究了黑龙江产芫荽籽精油成分和精油、残渣溶剂萃取物消除NaNO2的能力。

Has now been formed, including scale inhibitors, corrosion inhibitors, bactericidal Algicide, cleaning agents, pre-film, chelating agents, distributed agents from the monomer to a wide range of complex pharmaceutical product system, as well as soda ash, calcium chloride , magnesium chloride, sodium nitrite, bromine and bromide products.

现已形成了包括阻垢剂、缓蚀剂、杀菌灭藻剂、清洗剂、预膜剂、螯合剂、分散剂等从单体到复合药剂门类齐全的产品体系，以及纯碱、氯化钙、氯化镁、亚硝酸钠、溴素及溴化物系列产品。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。