97人人模人人爽人人少妇,一区二区二区无码视频,日韩女优精品,囯产精品第二页

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

公司新聞

您現(xiàn)在的位置: 網(wǎng)站首頁>>新聞中心>>公司新聞二氯甲烷的沸點(diǎn)是多少 二氯甲烷的性質(zhì)是什么?

二氯甲烷的沸點(diǎn)是多少 二氯甲烷的性質(zhì)是什么?

來源:http://bj1866.cn/ 日期:2021-04-23 發(fā)布人: 瀏覽次數(shù):0
關(guān)于到現(xiàn)在二氯甲烷的沸點(diǎn)是多少二氯甲烷的性質(zhì)和用途這個(gè)話題,相信很多小伙伴都是非常有興趣了解的吧,因?yàn)檫@個(gè)話題也是近期非常火熱的。
As for the boiling point of dichloromethane up to now, I believe many small partners are very interested in this topic, because this topic is also very hot recently.
那么既然現(xiàn)在大家都想要知道二氯甲烷的沸點(diǎn)是多少二氯甲烷的性質(zhì)和用途,小編也收集了相關(guān)的信息,那么下面分享給大家一起了解下吧。
Now that we all want to know the boiling point of dichloromethane, the properties and uses of dichloromethane, Xiaobian has also collected relevant information, let's share it with you.
二氯甲烷的沸點(diǎn)
Boiling point of dichloromethane
二氯甲烷的沸點(diǎn)為39.8攝氏度,熔點(diǎn)為-97攝氏度,相對(duì)密度為1.33,微溶于水,溶于乙醇和乙醚。二氯甲烷是甲烷氯化物中毒性小的。如果二氯甲烷直接濺入眼中,有疼痛感并有腐蝕作用。二氯甲烷的蒸汽有麻醉作用。
The boiling point of dichloromethane is 39.8 ℃, melting point is - 97 ℃, relative density is 1.33, slightly soluble in water, soluble in ethanol and ether. Dichloromethane is less toxic than methane chloride. If dichloromethane is splashed directly into the eye, it will cause pain and corrode. The vapor of dichloromethane has an anesthetic effect.
二氯甲烷的性質(zhì)
Properties of dichloromethane
二氯甲烷,分子式CH2Cl2,一種有芳香氣味,比水重,易揮發(fā)的無色透明液體,是不可燃低沸點(diǎn)溶劑,常用來代替易燃的石油醚、乙醚等。世界衛(wèi)生組織癌癥研究機(jī)構(gòu)將它公布為致癌物。二氯甲烷還被列入有毒有害大氣污染物名錄和有毒有害水污染物名錄。
Dichloromethane, molecular formula CH2Cl2, is a colorless transparent liquid with aromatic odor, heavier than water, and easy to volatilize. It is a non combustible low boiling point solvent. It is often used to replace flammable petroleum ether, ether, etc. Who International Agency for research on cancer has declared it a carcinogen. Dichloromethane is also listed in the list of toxic and harmful air pollutants and toxic and harmful water pollutants.
二氯甲烷的用途
Application of dichloromethane
1、用于制造電影膠片、聚碳酸酯,其余用作涂料溶劑、金屬脫脂劑,氣煙霧噴射劑、聚氨酯發(fā)泡劑、脫模劑、脫漆劑。
1. It is used for manufacturing safety film and polycarbonate, and the rest is used as coating solvent, metal degreaser, aerosol spray agent, polyurethane foaming agent, demoulding agent and paint stripper.
2、在制藥工業(yè)中做反應(yīng)介質(zhì),用于制備氨芐青霉素、羥芐青霉素和先鋒霉素等。
2. It is used as reaction medium in pharmaceutical industry to prepare ampicillin, hydroxybenzylpenicillin and vancomycin.
3、用在工業(yè)制冷系統(tǒng)中用作載冷劑使用,但危害很大。
3. It is used as refrigerant in industrial refrigeration system, but it is harmful.
4、用于谷物熏蒸和低壓冷凍機(jī)及空調(diào)裝置的制冷。
4. It is used for grain fumigation and refrigeration of low pressure freezer and air conditioner.

相關(guān)新聞
黄色激情亚洲一区| 亚洲一级片99| 欧美日本不卡视频一道| 日本有码一区二区三区网站| 无码高清网站| 亚洲欧美妆日韩一区| 久一大胆人体| 日韩av五月天激情在线免费观看| 欧美系列 日韩在线| 婷婷老师在线| 无码人妻久久久久久久| 欧美日韩一级视频在线| 香蕉三级片喷水| 日韩人人搡噜噜爽一区二区三区| 亚洲精品午夜电影网| 内谢人妻黄色片| 黄片一级特黄一级久久| 欧美优品之久久精品| 亚洲色欲100p| 久久免费片| 加勒比人妻秘书中文字幕一区二区| 搜一级曰B看| 88国产日韩精品免费一区二区| 欧美精品14页| 国内操屁眼视频| 亚洲精品福利AV| 国产美女极品倒高潮| 大香蕉久久C| 一级久久久久久| 黄色影院日韩| 播放亚洲老熟妇| 99久久久国| 欧美黄片使用引导| 买车| 天天看天天射天天操| 鸡巴插进逼逼的鸡巴视频| 少妇熟女日本一区| 日韩操我| 草草影院日韩电影| 日韩免费久久| 国产AV凛凛|