dichloromethane

简明释义

英[daɪklɔ:rə'meθeɪn]美[daɪklɔːrəˈmeθeɪn]

n. [有化] 二氯甲烷

英英释义

单词用法

同义词

反义词

例句

1.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。

2.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。

3.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。

4.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。

5.The results show that it is easy to separate sucrose-6-acetic ester from sucrose-4-acetic ester, using carbinol and dichloromethane as unfolding agent.

实验结果表明，采用甲醇、二氯甲烷的混合物作为展开剂可较好地分离6位及4位蔗糖乙酸酯。

6.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；

7.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。

8.In the laboratory, we often use dichloromethane (二氯甲烷) as a solvent for organic reactions.

在实验室中，我们常常使用dichloromethane（二氯甲烷）作为有机反应的溶剂。

9.The extraction of caffeine from coffee beans can be done using dichloromethane (二氯甲烷).

咖啡豆中咖啡因的提取可以使用dichloromethane（二氯甲烷）进行。

10.We used dichloromethane (二氯甲烷) to clean the glassware after the experiment.

我们用dichloromethane（二氯甲烷）来清洗实验后的玻璃器皿。

11.The vapor of dichloromethane (二氯甲烷) can be harmful if inhaled in large quantities.

如果大量吸入dichloromethane（二氯甲烷）的蒸汽可能会有害。

12.When handling dichloromethane (二氯甲烷), it is important to wear protective gloves and goggles.

处理dichloromethane（二氯甲烷）时，佩戴防护手套和护目镜是非常重要的。

作文

Dichloromethane, commonly known as DCM, is a colorless, volatile liquid with a sweet smell that is widely used as a solvent in various industrial applications. Its chemical formula is CH2Cl2, indicating that it contains two chlorine atoms and two hydrogen atoms attached to a single carbon atom. The unique properties of dichloromethane make it an essential compound in the fields of chemistry and manufacturing. One of the primary uses of dichloromethane is as a solvent for organic compounds. It can dissolve many substances, making it invaluable in laboratories for extracting and purifying chemicals. For instance, chemists often use dichloromethane to extract essential oils from plants or to separate different components of a mixture through a process called liquid-liquid extraction.In addition to its role as a solvent, dichloromethane is also employed in the production of pharmaceuticals. The pharmaceutical industry relies heavily on this compound for the synthesis of various drugs. Its ability to dissolve a wide range of compounds allows for efficient reactions and purification processes. However, the use of dichloromethane is not without concerns. It is classified as a volatile organic compound (VOC) and is known to have harmful effects on human health and the environment. Prolonged exposure to dichloromethane can lead to respiratory issues, skin irritation, and even more severe health problems such as liver and kidney damage. Therefore, safety measures must be taken when handling this substance, including working in well-ventilated areas and using appropriate personal protective equipment.Another significant application of dichloromethane is in the field of paint stripping and cleaning. Due to its strong solvent properties, it effectively removes paint, varnish, and adhesives from various surfaces. This makes it a popular choice among contractors and DIY enthusiasts. However, caution is advised when using dichloromethane for these purposes, as it can release harmful fumes that may pose health risks. As a result, many manufacturers are seeking safer alternatives to dichloromethane for paint removal and cleaning tasks.Despite its advantages, the environmental impact of dichloromethane cannot be overlooked. When released into the atmosphere, it contributes to air pollution and can lead to the depletion of the ozone layer. Consequently, regulatory agencies in several countries have imposed restrictions on its use and have encouraged the development of greener alternatives. Researchers are actively exploring biodegradable solvents and other eco-friendly options that could replace dichloromethane in various applications.In conclusion, dichloromethane is a versatile and widely used solvent with significant importance in both industrial and laboratory settings. While its effectiveness as a solvent and its applications in pharmaceuticals and paint stripping are notable, the associated health and environmental risks necessitate careful handling and consideration of alternative solutions. As the scientific community continues to innovate, it is crucial to balance the benefits of dichloromethane with the need for safety and sustainability in our practices. By doing so, we can ensure that we harness the advantages of this compound while minimizing its potential harm to both humans and the planet.

二氯甲烷，通常被称为DCM，是一种无色、易挥发的液体，具有甜味气味，广泛用作各种工业应用中的溶剂。它的化学式是CH2Cl2，表明它含有两个氯原子和两个氢原子与一个碳原子相连。dichloromethane的独特性质使其在化学和制造领域成为一种重要的化合物。dichloromethane的主要用途之一是作为有机化合物的溶剂。它可以溶解许多物质，使其在实验室中提取和纯化化学品时不可或缺。例如，化学家常常使用dichloromethane从植物中提取精油或通过液-液萃取过程分离混合物的不同组分。除了作为溶剂的作用外，dichloromethane还用于制药生产。制药行业在合成各种药物时严重依赖这种化合物。它能够溶解广泛的化合物，使反应和纯化过程高效。然而，使用dichloromethane并非没有问题。它被归类为挥发性有机化合物（VOC），已知对人类健康和环境有害。长期接触dichloromethane可能导致呼吸问题、皮肤刺激，甚至更严重的健康问题，如肝脏和肾脏损伤。因此，在处理这种物质时必须采取安全措施，包括在通风良好的区域工作和使用适当的个人防护装备。dichloromethane的另一个重要应用是在油漆剥离和清洁领域。由于其强溶剂特性，它有效地去除各种表面上的油漆、清漆和粘合剂。这使其成为承包商和DIY爱好者的热门选择。然而，在这些用途上使用dichloromethane时要谨慎，因为它可能释放出有害的烟雾，可能对健康构成风险。因此，许多制造商正在寻找更安全的替代品来替代dichloromethane进行油漆去除和清洁任务。尽管有其优点，但dichloromethane对环境的影响不容忽视。当释放到大气中时，它会导致空气污染，并可能导致臭氧层的耗竭。因此，几个国家的监管机构对其使用施加了限制，并鼓励开发更环保的替代品。研究人员正在积极探索可生物降解的溶剂和其他环保选项，以替代dichloromethane在各种应用中的使用。总之，dichloromethane是一种多用途且广泛使用的溶剂，在工业和实验室环境中具有重要意义。虽然它作为溶剂的有效性及其在制药和油漆剥离中的应用值得注意，但相关的健康和环境风险需要谨慎处理，并考虑替代解决方案。随着科学界的不断创新，平衡dichloromethane的好处与我们实践中的安全性和可持续发展需求至关重要。通过这样做，我们可以确保在最小化对人类和地球潜在危害的同时，利用这一化合物的优势。