保险粉

Meanwhile, the new problems of safety risk and environmental pollution caused by the addition of above mentioned organic compound to mother liquor were deeply analyzed.

同时深入分析了将上述有机物加入到母液中所带来的安全风险和环境污染问题，提出了中国保险粉企业需要在安全技术、环保技术和监控技术等方面作相应改进的具体建议。

The results showed that sodium dithionite was used on bean sprout in order to keep it fresh.

对佛山市禅城区市场豆芽的食用安全问题进行了随机采样检测，结果表明，被抽测的几大农贸市场中，无论是黄豆芽还是绿豆芽都含有一定量对人体有害的保险粉。

We detected the safety of bean sprout of several markets in Chancheng area of Foshan city.

对佛山市禅城区市场豆芽的食用安全问题进行了随机采样检测，结果表明，被抽测的几大农贸市场中，无论是黄豆芽还是绿豆芽都含有一定量对人体有害的保险粉。

Ultraviolet absorbent UV-326 was synthesized by means of diazotization, coupling and reduction, with rongalite as reduction agent.

以保险粉作还原剂，通过重氮化、偶合、还原反应合成了紫外线吸收剂UV-326。

Several new technologies of sodium dithionite and their current situations of industrial application and research were introduced in this paper.

保险粉是一种常用的还原性纸浆漂白剂，本文介绍了目前国际上保险粉在制浆过程中的研究和应用现状，分析了保险粉用于制浆过程的技术经济和环境影响。

Several typical sodium dithionite bleaching processes,and its current situation of industrial application and research were introduced in this paper.

保险粉是一种常用的还原性纸浆漂白剂，该文介绍了几种典型流程以及保险粉在纸浆漂白中的应用和研究现状，分析了保险粉纸浆漂白的性能、环境影响和成本。

The reaction of fluoroalkyl iodides with ethyl vinyl ether and amines in the presence of sodium dithionite was studied.

研究了在保险粉存在下，氟烷基碘(1)与乙烯基乙醚和伯胺或仲胺(2)的反应。

In part one, the reactions of some active fluorine-containing compounds such as 2, 2-dihydropolyfluoroalkanoic acids and ethyl 2-hydropolyfluoroalkenoates were studied and various fluorine-containing heterocyclic compounds were synthesized. Using 2, 2-dihydropolyfluoroalkanoic acids as the starting material, 4-fluoroalkyl quinolin-2-ols, 2- [ -1-hydropolyfluoro-1-alkenyl] -4H-3, 1-benzoxazin-4-ones, 1-aryl -4, 9-dihydro-3-fluoro-alkyl-1H-pyrazo [3, 4-b] quinolin-4-ones, 5-fluoroalkyl-12H-quin olino [2, 1-b] quinazolin-12-ones, 4-fluoroalkyl-1, 3-dihydro-1, 5-benzodiazepin-2-ones and 4-fluoroalkyl-2H-pyrido [1, 2-a] pyrimidin-2-ones were synthesized through its condensation reaction with anilines, anthranilic acid, N'-aryl-o-aminobenzamides, o-nitro aniline, o-amino pyridine and their derivatives and the subsequent transformations. 5-Fluoroalkyl isoxazolidines, 3-fluoro-3-fluoroalkylisoxazolidino [4, 3-c] quinolin-4-ones, 3-fluoroalkylisoxazolino [4, 3-c] quinolin-4-ones and 2-aryl-3per fluoroacylindoles were synthesized by inter-and intramolecular 1, 3-dipolar cycloaddition of fluorine-containing olefins and nitrones.

第二部分，我们研究了α，α-二氟苄基卤类化合物的亚磺化脱卤反应、产物的转化及全氟烷基亚磺酸盐与芳环化合物的全氟烷基化反应，发现全氟苄基碘或溴及α，α一二氟苄基溴在保险粉等亚磺化脱卤试剂引发下可生成相应的亚磺酸盐；全氟苄基亚磺酸盐与氯气或溴反应可生成全氟苄基磺酰氯或磺酰溴；在烯烃存在下，全氟苄基碘则与烯烃发生加成反应，生成相应的1：1加成产物；在三价醋酸锰的作用下，部分芳香化合物如茴香醚，二甲氧基苯，吡啶，喹啉等可以和过量的全氟烷基亚磺酸盐发生双全氟烷基化反应，反应表现出一定的区域选择性，产率良好。

At present the company mainly engaged in natural fatty alcohol products (C8-10, C12-14, C16-18 and various pure distillate), fatty alcohol polyoxyethylene ether, the basic sub-nonyl polyoxyethylene ether, polyethylene glycol and penetrant series over 100 varieties and zinc powder Insurance Law, Insurance Law sodium powder, hair bleaching agent, carved white block , carved white zinc, zinc oxide, zinc borate, sulfur dioxide and so on.

目前公司主要经营产品有天然脂肪醇（C8-10、C12-14、C16-18及各种纯馏分）、脂肪醇聚氧乙烯醚（AEO、OS及平平加O）、壬基本分聚氧乙烯醚、聚乙二醇和渗透剂系列100多个品种和锌粉法保险粉、甲酸钠法保险粉、漂毛剂、雕白块、雕白锌、氧化锌、硼酸锌、二氧化硫等。

Light calcium carbonate, ACC, nanometer superfine calcium carbonate, magnesium carbonate, trihydrate alumina, silica white, strontium carbonate, barium carbonate, potassium carbonate, rubberlith, rongalite, permanent white, lemery, microspheroidal catalyst, magnesium hydrate, bluestone, nickel salt, sodium molybdate, sodium chloride, potassium chloride, calcium chloride, sodium fluoride, cryolite, iron oxide red, lithium hydroxide, zirconium hydroxide, calcium phosphate, sulfur, etc.

轻质碳酸钙、活性碳酸钙、纳米级超细碳酸钙、碳酸镁、氢氧化铝、白炭黑、碳酸锶、碳酸钡、碳酸钾、立德粉、保险粉、硫酸钡、硫酸钾、微球催化剂、氢氧化镁、硫酸铜、硫酸镍、镍酸铵、钼酸钠、氯化钠、氯化钾、氯化钙、氟化钠、冰晶石、氧化铁红、氢氧化锂、氢氧化镍、氢氧化锆、磷酸钙、硫磺等。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。