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1·The dichloromethane-ethanol system was the excellent solvent for HPMCAS.

二氯甲烷-乙醇等混合溶剂是HPMCAS的良溶剂；

2·Thee output of acetone and dichloromethane which raw material volatilized is little.

生产工艺过程产生的丙酮，原料挥发产生的二氯甲烷、丙酮等产生量较小。 缪。

3·The triadimenol could be extracted with acetone, and then re-extracted with dichloromethane.

样品采用丙酮提取，然后使用二氯甲烷对提取液进行萃取。

4·Note. (1) The dichloromethane is distilled from phosphorus pentoxide and stored over molecular sieves.

注意事项(1)二氯甲烷加入五氧化二磷蒸馏，加入分子筛储存。

5·To establish a gas chromatography method for solvent desorption of dichloromethane in the air of workplace.

目的建立工作场所空气中二氯甲烷的溶剂解吸气相色谱测定方法。

6·Dichloromethane was used as extracting agent for the extraction, and then vacuum rotatory evaporator was used for the concentration.

以二氯甲烷为萃取剂对茅台迎宾酒中的微量成分进行了萃取，然后用真空旋转蒸发器将其浓缩。

7·When hexane is mixed with equal volume acetone, the yield decreases sharply, which is the same as cyclo hexane mixed with dichloromethane.

非极性溶剂正已烷和等体积性溶剂丙酮混合后，提取率有明显下降。

8·Atmospheric histories of halocarbons from analysis of Antarctic firn air: methyl bromide, methyl chloride, chloroform, and dichloromethane.

从南极永久性积雪空气分析大气卤烃的历史：甲基溴化物，甲基氯化物，氯仿和二氯甲。

9·The amount of Chinese domestic dichloromethane used in the medicine industry is about 15-20% of the total sales quantity of dichloromethane.

中国国内二氯甲烷用于医药行业的数量约为二氯甲烷总销售量的15 - 20%。

10·BTEX in air were adsorbed by active carbon tube, replaced carbon bisulfide by dichloromethane as reagent, analyzed by using Capillary GC-FID.

用活性碳吸附管采集大气中的苯系物，二氯甲烷替代二硫化碳作为脱附剂，毛细管气相色谱分离分析。

二氯甲烷

1·To establish a gas chromatography method for solvent desorption of dichloromethane in the air of workplace.

目的建立工作场所空气中二氯甲烷的溶剂解吸气相色谱测定方法。

2·After reaction, the purified product was obtained through extraction with dichloromethane, drying with anhydrous sodium sulfate and desolventizing.

反应后用二氯甲烷萃取，无水硫酸钠干燥，除去溶剂后得到纯净产物。

3·A capillary GC method with FID detector for the determination of residual organic solvents ethanol, isopropanol, dichloromethane, n-hexane, tetrahydrofuran, DMF and dimethyl malonate was established.

建立了毛细管气相色谱法测定甲磺酸齐拉西酮中残留溶剂乙醇、异丙醇、二氯甲烷、正己烷、四氢呋喃、D MF、丙二酸二甲酯的残留量。