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- With acetic ether as solvent,the chlorogenic acid in Lonicera chrysantha s fruit was extracted with Soxhlet extraction. 用乙酸乙酯作溶剂,采用索氏提取法对黄花忍冬果实中绿原酸进行提取,高效液相色谱法对绿原酸进行检测和含量的测定。
- Hydrophilic membranes were prepared with key components of sodium silicate, acetic ether, polyacry-lamide, etc. 以硅酸钠、乙酸乙酯、聚丙烯酰胺等为主要成分制备出亲水膜层。
- With reaction distillation process to make acetic acid in used acetic acid solution form acetic ether, achieving the purpose of recovery acetic acid. 通过反应精馏工艺技术,使废乙酸溶液中的乙酸生成乙酸乙酯,达到回收乙酸目的。
- RESULT The acetic ether portion,n-butanol portion and total flavonoids portion of Pollen Typhae could markedly shorten the coagulate time in mice. 结果蒲黄及炮制品的乙酸乙酯部位、正丁醇部位、总黄酮部位可明显缩短小鼠凝血时间。
- METHODS Using alcohol to extract Tripterygium wilfordii,and using acetic ether to elution,and then vaporizing acetic ether to obtain dry powder. 方法雷公藤根茎先用乙醇提取,然后用乙酸乙酯洗提,最后挥干溶剂得干品。
- OBJECTIVE The extraction method of Tripterygium wilfordii and determination method of total diterpene in acetic ether extract were estabished. 本文讨论了雷公藤的提取方法及乙酸乙酯提取物总二萜含量测定方法。
- The parent azacrown ether 1,10-dioxa-4,7,13,16-tetraaza-18crown-6(L1) and its two acetic ether armed-derivatives(L2 and L3) were synthesized and characterized. 合成和表征了1,10-二氧-4,7,13,16-四氮杂18-冠-6(L1)母体及其两种乙酸乙酯臂式衍生物(L2,L3)。
- The consequence of MTT and FCM to Bel-7402 and HT-29 intimates that the portion of organic acid and the extract of acetic ether exhibit ecumenic effect of suppressing tumor. Bel-7402细胞和HT-29细胞的MTT和流式细胞测定凋亡结果提示,半夏、掌叶半夏的有机酸部位和乙酸乙酯部位有较好的体外抗肿瘤细胞增殖和诱导肿
- Both methods are applicable for the quality control of triptolide alcohol,yet the separation and determination outcome were better for the sample treated with acetic ether. 2种含量测定方法均可用于雷公藤内酯醇的质量控制,尤以乙酸乙酯处理样品的方法分离、测定效果较好。
- Objective:Using the headspace Gas-chromatography methods to measure the assay of residual solvent (methanol,acetic ether and isopropyl alcohol) meanwhile in Ceftriaxone sodium. 目的:建立一种气相色谱法同时测定头孢曲松钠中有机溶剂甲醇、乙酸乙酯、异丙醇残留量的方法。
- Results n-Butanol extract and water extract significantly enhanced and petroleum ether extract from Bletilla colloid prominently reduced platelet maximum aggregation induced by ADP,while acetic ether extract had no effect. 结果白及正丁醇提取部位和水溶性部位可显著升高腺苷二磷酸(ADP)诱导的血小板最大聚集率,而乙酸乙酯提取部位可显著抑制ADP诱导的血小板聚集,石油醚提取部位对ADP诱导的血小板聚集无显著影响。 各提取部位对血小板数无显著影响。
- The results show that the diameter of nanometer SiO_2 made by sodium silicate and acetic ether lies in 20-40nm,and the BET specific area reaches 400m~2/g,and the most reaches to 503.38m~2/g. 研究表明;以硅酸钠为原料;乙酸乙酯为潜伏酸试剂;用溶胶-凝胶法可制得粒径为20~40 nm级的S iO2粉末;粉末的BET比表面积可达400m2/g;最高可达503.;38m2/g。
- Acetohydroxamic acid (AHA) is synthesized by the method of hydrochloric hydroxylamine reaction with acetic ether in alcohol water medium and its structure is characterized by element analysis, IR, MS, et al. 在乙醇 水体系中 ,用乙酸乙酯和盐酸羟胺为主要原料合成了乙异羟肟酸 (AHA) ,并通过元素分析、红外光谱 (IR)、质谱 (MS)等方法对其结构进行了表征。
- To synthesize aryl pyrimidines by taking benzene,methyl benzene,acetic ether,1,2-dichloroethane as solvent,the yield and purity of the product are high by taking methyl benzene as solvent. 分别选用苯、甲苯、乙酸乙酯、二氯乙烷作为溶剂合成桂皮酰哌啶,结果表明甲苯作为溶剂时产品纯度高,收率高,可用于大规模生产。
- The article is about how to use phosgene and p-nitrophenylamine to react in acetic ether's liquefier to produce p-nitro-phenyl isocyanate, Its best technological condition have been discussed. 介绍用光气和对硝基苯胺在乙酸乙酯溶剂中反应来制备对硝基异氰酸苯酯的方法,并讨论了其最佳工艺条件。
- Objective: To found a method to detect the residual solvents of Penicillin Sodium for Injection: butanol, acetic ether and butyl acetate. 摘要目的:建立一种气相色谱法同时测定注射用青霉素钠中有机溶剂丁醇、乙酸乙酯、乙酸丁酯残留量的方法。
- Market demand and production method of acetic ether 乙酸乙酯的市场需求与生产方法
- A whiff of ether will put you out in a few seconds. 一剂乙醚几秒钟后就会使你失去知觉。
- Results: average recovery are: butanol 100.2%-101.5%, acetic ether 95.0%-103.1% and butyl acetate 97.8%-101.5%. coefficient of variability are: butanol 1.9%, acetic ether 2.3% and butyl acetate 2.1%. 结果:平均回收率丁醇100.;2%25-101
- Synthesis of Acetic Ether by Supported-type Solid Acid 负载型固体酸催化合成乙酸乙酯