一种N，N，N-三甲基壳聚糖硫酸甲酯铵的合成方法。
Method for synthesizing N, N, N-trimethyl chitosan sulfate methyl ammonium.
硫酸二甲酯是用来生产燃料和农药的物质。它对于人类的皮肤，眼睛和上呼吸道系统具有腐蚀和刺激作用。
The dimethyl sulfate, a substance that is used to produce industrial dyes and pesticides, can be corrosive and irritative to human skin, eyes and the upper respiratory tract.
它可以代替剧毒的光气和硫酸二甲酯作为环境友好的有机合成中间体和起始物质，应用与羰基化和甲基化反应中。
It can be use as an environment-friendly intermediate and starting material for organic synthesis substituting the poisonous phosgene and dimethyl sulfate in carbonylation and methylation reaction.
介绍了用溶剂析出法分离间苯二甲酸二甲酯磺酸钠生产废水中硫酸钠和间苯二甲酸二甲酯磺酸钠的新工艺。
A new process using solvent for separating sodium sulfate and dimethyl isophthalate sodium sulfonate from wastewater of dimethyl isophthalate sodium sulfonate production is introduced.
目的探讨硫酸二甲酯致眼损伤的临床特点及治疗方法。
Objective To discuss on clinical characteristic and treatment of eye injured by dimethyl sulfate.
在中试反应精馏塔中以浓硫酸为催化剂进行了醋酸与甲醇反应制备醋酸甲酯的试验。
Preparation of methyl acetate from methanol and acetic acid by reactive rectification was investigated with concentrated sulfuric acid as catalyst.
方法对124例硫酸二甲酯致眼损伤的病例进行分析。
Methods Retrospective analysis 124 cases of eye injured by dimethyl sulfate.
采用一水合硫酸氢钠作为催化剂，催化己二酸生产副产物——混合二元酸与甲醇反应合成混合二元酸二甲酯。
Mixed dibasic acid dimethyl ester was synthesized from methanol and mixed dibasic acid, the byproduct of adipic acid, using sodium sulfate monohydrate as catalyst.
以牛油、二乙烯三胺和硫酸二甲酯为主要原料合成了一种新型阳离子双酰胺类纸张柔软剂。
This paper deals with the preparation and application of the cationic diamide softening agent, which is synthesized by using cattle oil, Diethylenetriamine (DETA) and dimethyl sulfate.
本文探讨了萃取酯化法自甲基丙烯酰胺硫酸盐制取甲基丙烯酸甲酯的可行性。
The possibility of producing methyl methacrylate from methacrylamide sulfate with extraction esterification method has been studied.
当硫酸流加次数达到7次时，桂醇甲酯的合成产率可达87.6%。
When adding times reach seven, the synthesis rate of CMF increase to 87.6%.
硫酸二甲酯是一种重要的化工原料，在有机合成中用于代替卤代烷作为甲基化剂。
Sulfuric acid dimethyl ester, one of the important chemical raw materials ACTS as the methylating agent in the organic synthesis for the purpose of replacing alkyl halide.
职业性急性硫酸二甲酯中毒诊断标准及处理原则。
Diagnostic criteria and principles of management of occupational acute dimethyl sulfate poisoning.
聚甲基丙烯酸甲酯和硫酸钙添加剂已被证明是可行的改善固定的方法，但都具有潜在的缺点。
Polymethylmethacrylate and calcium sulfate augmentation have been shown to be viable options for improving fixation; but have the potential disadvantages.
以醋酸、甲醇为原料，以浓硫酸为催化剂，对反应精馏法制备醋酸甲酯的过程进行了实验研究。
A process of synthesizing methyl acetate by reactive distillation with acetic aid and methanol as starting materials and sulfuric acid as catalyst was studied.
所述钛盐是指钛酸甲酯、钛酸乙酯、钛酸四丁酯、四氯化钛、硫酸氧钛中的任一种；
The said titanate is one of the kinds such as methyl titanate, ethyl titanate, butyl titanate, titanic chloride and titanoxy sulfate.
以回收的变质油脂先制成精炼油脂，然后进行醇解反应制备脂肪酸甲酯，是一种很好的加脂剂原料，可以合成LWF结合型加脂剂。或进行醇解制备甘油单、双酯，然后制得硫酸化油加脂剂。
The combined Fatliquor LWF is prepared by methyl ester which was synthesized through the alcoholysis reaction and catalysised by anion layer and pillar materials with deteriorated oil.
对溴苯酚经烷基化、硫酸二甲酯醚化、缩合及水解反应制得阿达帕林，总收率51%。
Adapalene was synthesized from 4-bromophenol by alkylation, etherification, condensation and hydrolysis with an overall yield of 51%.
以甲基丙烯酸与甲基丙烯酸甲酯为原料，过硫酸钾为引发剂，经溶液聚合制备出药用肠溶性丙烯酸树脂。考察了物料配比、反应温度、溶剂浓度、引发剂用量对反应的影响。
Enteric acrylic acid resin for drug delivery was prepared by the solution polymerization with methacrylic acid and methyl methacrylate as raw materials and potassium persulfate as initiator.
讨论了碳酸二甲酯的合成工艺，主要介绍氧化羰基合成工艺，并对碳酸二甲酯取代硫酸二甲酯和光气市场的可能性进行了分析。
Synthesis process of dimethyl carbonate is reviewed. Oxidative carbonylation of methanol to DMC and the possibilities of replacement of DMS and COCl_2 by DMC are discussed.
介绍3种具有代表性的甲硫醇合成方法：硫脲-硫酸二甲酯法、硫化碱-硫酸二甲酯法和甲醇-硫化氢法。
Three typical methods for synthesizing methanthiol are introduced: i. e. thiourea-dimethyl sulfate method, alkali sulfide-dimethyl sulfate method, and methanol-hydrogen sulfide method.
通过改变硫酸二乙酯的用量、水杨酸甲酯与氢氧化钾的反应时间、氢氧化钠的用量，得到了2-乙氧基苯甲酸的优化制备工艺条件。
The reaction conditions of 2-ethoxybenzoic acid were optimized by changing the amount of diethyl sulfate, reaction time of methyl salicylate and potassium hydroxide, the amount of sodium hydroxide.
通过改变硫酸二乙酯的用量、水杨酸甲酯与氢氧化钾的反应时间、氢氧化钠的用量，得到了2-乙氧基苯甲酸的优化制备工艺条件。
The reaction conditions of 2-ethoxybenzoic acid were optimized by changing the amount of diethyl sulfate, reaction time of methyl salicylate and potassium hydroxide, the amount of sodium hydroxide.
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