We mainly use cotton linter as raw material to produce cotton linters pulp, for industrial production of acetate, ether and nitrocellulose.
主要以棉短绒为原料生产精制棉，是制造醋酸纤维素、醚类纤维素和硝化纤维素的主要材料。
Acrylic dispersion was prepared by adding water into polyacrylic solution which was carried out in the present of propylene glycol monomethyl ether acetate using di-tert-butyl peroxide as initiator.
以过氧化二叔丁基为引发剂，丙二醇甲醚醋酸酯为溶剂，进行了丙烯酸酯溶液共聚合后，用水稀释得到丙烯酸树脂分散体。
Sodium bisulfate was used as the catalyst for esterification of ethylene glycol mono-methyl ether and acetic acid to ethylene glycol monomethyl ether acetate.
将硫酸氢钠作为由乙二醇单甲醚和乙酸酯化合成乙二醇单甲醚乙酸酯的催化剂。
The compositions of grease were eluted with petroleum ether, benzene, chloroform, ethyl acetate, acetone, ethanol and characterized by means of IR and NMR spectroscopy.
油脂部分依次以石油醚、苯、氯仿、乙酸乙酯、丙酮、乙醇为淋洗剂进行洗脱，利用红外光谱、核磁共振光谱法对所分离组分进行了结构鉴定。
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。
Methods: (1)To separate stilbene glycoside by using silica gel column chromatography with gradient elution consisting of ethyl acetate and petroleum ether.
方法：（1）以硅胶柱色谱法，乙酸乙酯-石油醚梯度洗脱，自何首乌中提取分离二苯乙烯苷单体成分。
Various fractions of tannins with different polarities and relatively narrow molecular weight distribution were obtained by extractions using ether and ethyl acetate sequently .
通过乙醚和乙酸乙酯萃取可得到极性不同的组分。分析表明，各级分的分子量分布范围不同，且相对较窄。
Volatility chemical constituents of the extracts of mulberry (Moms atropurpurea R. ) by petroleum ether and ethyl acetate were analyzed by GC-MS.
对广东桑桑椹石油醚和乙酸乙酯提取物中的化学成分进行GC-MS分析。
The petroleum ether extract gave 100% mortality in shortest time followed by ethyl acetate extract.
从作用时间上看，石油醚组分作用时间最短，乙酸乙酯组分次之；
The ethanol extract from the twig bark powder of Periploca sepium was suspended in water and successively treated with petroleum ether, ethyl acetate and n-butanol.
将杠柳枝皮粉末的乙醇提取物悬浮于水后，依次用石油醚、乙酸乙酯和正丁醇萃取。
Method the extracts of petroleum ether, ether, ethyl acetate, ethanol and hot water from the whole plant were used to determine the in vitro miti-oxidant and antibacterial activity.
方法对楮头红的石油醚、乙醚、乙酸乙酯、乙醇和热水的粗提取物分别进行体外抗氧化和抑菌试验。
ResultsPetroleum ether extract and ethyl acetate extract both had some anticancer effects in vitro.
结果青天葵石油醚和醋酸乙酯部位具有一定的体外抗肿瘤作用。
Ten of them were identified. They are ethylene, propylene, isobutane, cyclobutane, three isomeric butenes, methyl ethyl ether, ethyl isopropyl ether, and ethyl acetate.
它们是乙烯，丙烯，异丁烷，环丁烷，丁烯类化合物三个，甲基乙基醚，乙基异丙基醚，乙酸乙酯。
In four extracts from PMEW treated with methyl alcohol and water, petroleum ether, chloroform and ethyl acetate, extract rate of methyl alcohol and water was the highest.
通过对PMEW萃取分离发现，在甲醇水、氯仿、石油醚和乙酸乙酯四种萃取物中仍以甲醇水的萃取率最高。
Methods Artemisinin is extracted with petroleum ether and pass column of silica gel and gradient elution with ethyl acetate, then it is tracked with TLC and detected with UV-VIS.
方法青蒿经石油醚提取浓缩，浸膏经过硅胶柱，用不同配比的乙酸乙酯洗脱，用tLC法跟踪，UV法检测。
Methods: (1) to separate stilbene glycoside by using silica gel column chromatography with gradient elution consisting of ethyl acetate and petroleum ether.
方法：硅胶柱色谱法，乙酸乙酯-石油醚梯度洗脱，自何首乌中提取分离二苯乙烯苷单体成分。
The chemical constituents of petroleum ether fraction, chloroform fraction and ethyl acetate fraction of Flemingia philippinensis Merr. et Rolfe. were analysed by modern chromatography.
应用现代色谱技术和方法研究了千斤拔的石油醚部位、氯仿部位、乙酸乙酯部位的了化学成分。
Vapor-liquid equilibrium data of ethyl acetate-isopropyl ether and ethyl acetate-tetrahydrofuran binary systems were measured at atmospheric pressure 101.
用汽液平衡釜测定了乙酸乙酯-异丙醚和乙酸乙酯-四氢呋喃二组分物系的汽液平衡数据。
ConclusionPetroleum ether, Ethyl acetate parts of Rhizoma Cyperi are the effective par...
结论香附的石油醚、乙酸乙酯部位是治疗痛经的有效部位。
Then gradient extraction was carried out with petroleum ether and ethyl acetate, and the activity of extracted substance with ethyl acetate was better than others.
再用石油醚、乙酸乙酯进行梯度提取，确定乙酸乙酯提取物的活性更优，测得总黄酮含量为27.73%。
The test is a research on the extraction of distilling essential oil from leaves by comparing efficiency of extraction by three reagents. Those are ether, ethyl acetate and ether from Petroleum.
本试验对树叶中提取精油萃取液进行了研究，通过三种不同试剂萃取，对水蒸汽蒸馏产物所得的萃取率来研究其适合度。
Objective: to found a method to detect the residual solvents of Penicillin Sodium for Injection: butanol, acetic ether and butyl acetate.
前言：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。
Objective: to found a method to detect the residual solvents of Penicillin Sodium for Injection: butanol, acetic ether and butyl acetate.
前言：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。
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