欧美色亚洲色,欧美日韩国产亚洲成人自拍,中文字幕人妻一区二区在线视频侦探,熟女一区二区少妇

你好,歡迎訪問濟(jì)南金昊化工有限公司!

專注品質(zhì),信賴服務(wù)

我們用心做產(chǎn)品服務(wù)

咨詢熱線:

13655318786

常見問題

您現(xiàn)在的位置: 網(wǎng)站首頁(yè)>>新聞中心>>常見問題二氯甲烷是什么?

二氯甲烷是什么?

來源:http://m9660.cn/ 日期:2022-07-20 發(fā)布人: 瀏覽次數(shù):0
二氯甲烷簡(jiǎn)稱DCM,化學(xué)式CH2CL2,常溫下是一種無色透明、比水重、易揮發(fā)的液體,微溶于水,與絕大多數(shù)常用的有機(jī)溶劑互溶,具有類似醚的刺激性氣味。二氯甲烷沸點(diǎn)低,在工業(yè)時(shí)容易揮發(fā)造成環(huán)境污染。
Dichloromethane, abbreviated as DCM, with chemical formula CH2Cl2, is a colorless, transparent, water-specific, volatile liquid at room temperature. It is slightly soluble in water and miscible with most commonly used organic solvents. It has a pungent smell similar to ether. Dichloromethane has a low boiling point and is easy to volatilize in industrial production, causing environmental pollution.
由于溶解能力強(qiáng)、沸點(diǎn)低、相對(duì)低毒性和反應(yīng)惰性,長(zhǎng)期以來一直是多種應(yīng)用的首*溶劑。
Due to its strong solubility, low boiling point, relatively low toxicity and inert reaction, it has been the first solvent for many applications for a long time.
例如在制藥工業(yè)中作為反應(yīng)介質(zhì),用于制備氨芐青霉素、羥芐青霉素和先鋒霉素等;
For example, as a reaction medium in the pharmaceutical industry, it is used to prepare ampicillin, hydroxybenzylpenicillin and vancomycin;
也用于膠片中的溶劑;還可用作石油脫蠟溶劑、氣溶膠推進(jìn)劑、有機(jī)合成萃取劑、聚氨酯等泡沫塑料用發(fā)泡劑和金屬清洗劑等。
Also used as solvent in film production; It can also be used as oil dewaxing solvent, aerosol propellant, organic synthetic extractant, foaming agent for foam plastic production such as polyurethane and metal cleaning agent.
二氯甲烷在我國(guó)主要用于膠片的消費(fèi)量占總消費(fèi)量的50%,醫(yī)藥方面占總消費(fèi)量的20%,清洗劑及化工行業(yè)消費(fèi)量占總消費(fèi)量的20%,其他方面占10%。
The consumption of dichloromethane mainly used in film production accounts for 50% of the total consumption in China, medicine accounts for 20% of the total consumption, cleaning agent and chemical industry accounts for 20% of the total consumption, and other aspects account for 10%.
工業(yè)上二氯甲烷一般使用天然氣和氯氣反應(yīng)制得,是一種優(yōu)良的有機(jī)溶劑,經(jīng)常用來代替易燃品(如石油醚和乙醚)。此外,由于毒性很小,且中毒后蘇醒較快,故可用作麻醉劑。
In industry, dichloromethane is generally prepared by the reaction of natural gas and chlorine. It is an excellent organic solvent and is often used to replace inflammables (such as petroleum ether and ether). In addition, it can be used as an anesthetic because of its low toxicity and rapid recovery after poisoning.
以上就是為大家介紹的有關(guān)過硫酸鈉的詳細(xì)的介紹,希望對(duì)您有所幫助.如果您有什么疑問的話,歡迎聯(lián)系我們.我們將以的態(tài)度,為您提供服務(wù)http://m9660.cn
The above is a detailed introduction about sodium persulfate for you. I hope it will help you. If you have any questions, please contact us. We will provide services for you with a professional attitude http://m9660.cn

相關(guān)新聞
啪啪啪在线看亚洲精品| 邪恶成人av| 欧美 精品999| 国产精品久久久久久久久久婷婷| 婷婷五月在线| 另类亚洲中字人妻91| 夜夜干无码av| 日韩av五月天激情在线免费观看| 18麻豆福利视频| 日韩黄片视频久久久| 综合网女女网| 免费在线观看亚洲av青青草原电影| 老司机福利精品在线插| 大香蕉网大香蕉在线| 人妻卖淫被颜射| 黄色成人电影日本在线免费| 日本一区二区性学堂| 色综合久久综合欧美综合网| 国产一二三区蜜臂| 久久午夜| 久久韩国电影中文字幕| 亚洲图片一区二区三 在线| 久久久久久九少妇洗澡一区二三区| 亚洲理论电影在线播放2024免费| h视频一区二区三区外网网站| 99宅男网站在线播放| 爆插艹网站| 亚洲精品中文字一区二区 | 国产麻豆激情无码AV毛片久久| 国产色色色AV| 情色播播1区2区3区| 日韩人妻在线中文字幕第五页| 亚洲国产 Av美女网站| 亚洲综合欧美不卡| 欧美久久久999视频| 欧美成人无码观看免费| 日本久久中文国产| 2019久久综合精品网| 欧美韩国日本国产12区| 午夜亚洲成人网| 懂色AV一区二区三区国产中文在线|