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(wèn)濟(jì)南金昊化工有限公司!

專(zhuān)注品質(zhì),信賴(lài)服務(wù)

我們用心做產(chǎn)品服務(wù)

咨詢熱線:

13655318786

常見(jiàn)問(wèn)題

您現(xiàn)在的位置: 網(wǎng)站首頁(yè)>>新聞中心>>常見(jiàn)問(wèn)題順酐在使用過(guò)程中的作用是什么?

順酐在使用過(guò)程中的作用是什么?

來(lái)源:http://m9660.cn/ 日期:2023-11-10 發(fā)布人: 瀏覽次數(shù):0
順酐全名為順丁烯二酸酐,又稱(chēng)為馬來(lái)酸酐,是一種有強(qiáng)烈刺激氣味的無(wú)色結(jié)晶粉末,于1834年由蘋(píng)果酸得到。早期,順丁烯二酸酐是通過(guò)苯的催化氧化制備,但為了降低成本,改用正丁烷氧化法制取。
Maleic anhydride, also known as maleic anhydride, is a colorless crystalline powder with a strong pungent odor, first obtained from malic acid in 1834. In the early days, maleic anhydride was prepared through the catalytic oxidation of benzene, but in order to reduce production costs, the method of n-butane oxidation was used to produce it.
順酐由苯經(jīng)催化氧化或由丁烯或丁烷用空氣氧化而制得,溶于乙醇、乙醚和丙酮,難溶于石油醚和四氯化碳,與熱水作用而成馬來(lái)酸;
Maleic anhydride is obtained by catalytic oxidation of benzene or oxidation of butene or butane with air. It is soluble in ethanol, ether, and acetone, but insoluble in petroleum ether and carbon tetrachloride. It reacts with hot water to form maleic acid;
順酐廠家
順酐的外觀是白色片狀結(jié)晶,有粉末狀、針狀、片狀、丸狀、棒狀、團(tuán)塊狀或熔融物質(zhì),相對(duì)密度是1.480,熔點(diǎn)在52.8℃,沸點(diǎn)是202.2℃,閃點(diǎn):110.0℃。
The appearance of maleic anhydride is a white crystalline flake, consisting of powder like, needle like, flake like, pellet like, rod like, agglomerate like or molten substances. The relative density is 1.480, the melting point is 52.8 ℃, the boiling point is 202.2 ℃, and the flash point is 110.0 ℃.
順酐的作用:用于雙烯合成、制藥物、農(nóng)藥、染料中間體及制聚酯樹(shù)脂、醇酸樹(shù)脂、馬來(lái)酸等有機(jī)酸,也用作脂肪和油防腐劑等,不飽和聚酯樹(shù)脂、醇酸樹(shù)脂、、長(zhǎng)效碘胺的原料。也是涂料、馬來(lái)松香、聚馬來(lái)酐、順酐-苯乙烯共聚物的共聚單體,也是油墨助劑、造紙助劑、增塑劑、酒石酸、富馬酸、四氫呋喃等的有機(jī)化工原料。
The function of maleic anhydride: used in the synthesis of dienes, pharmaceuticals, pesticides, dye intermediates, as well as in the production of organic acids such as polyester resin, alkyd resin, maleic acid, etc. It is also used as a preservative for fats and oils, and as a raw material for the production of unsaturated polyester resin, alkyd resin, and long-acting iodamine. It is also a comonomer of coatings, maleic rosin, polymaleic anhydride, and maleic anhydride styrene copolymers, and an organic chemical raw material for the production of ink additives, paper making additives, plasticizers, tartaric acid, fumaric acid, tetrahydrofuran, etc.
本文由順酐廠家為您提供,我們的網(wǎng)站是:http://m9660.cn將以全心全意的熱情為您提供服務(wù),歡迎您的訪問(wèn)!
This article is provided by the maleic anhydride manufacturer for you, and our website is: http://m9660.cn We will provide you with wholehearted enthusiasm and welcome your visit!

相關(guān)新聞
中出最强人妻白木优子| 好叨妞只有这里有精品| 国产乱爱一二三四区| 日韩精品少妇人妻一区二区| 淫荡熟女久久亚洲精品| 中日免费视频一区二区三区69| 激情综合在线射| 美女销魂午夜成人影院| 日本免费视频试看| 亚洲日韩欧美在线不卡高清| 人妻白丝满足| 国产精品日韩欧美在线观看| 色精品| 啊啊啊水好多啊在线播放| 在线午夜福利人妻| 国产又大又长又粗又爽视频| 黄色美女网站1319| S国产一区二黄片| 综合久久精品色| 日本情爱网久久网| 狠狠做爱五月| 欧美三区四区五区激情免费| 性高潮性别频电影院久久久久久久| 中文字幕日韩在线欧美一区| 钟山县| 色色欧美久久| 后入人妻少妇屁股91| 大鸡巴调教骚逼91真人猛干| 欧美亚洲天堂网站| 国产久久99久久| 99爱视频精品| 色婷婷AV综合男女一区二区| 无套国产骚| 97麻豆国产传媒成人影片| 婷婷激情五月天欧美视频| 天天射天天日天天干天天插| 又大又粗又猛又黄视频| B 在线观看| 欧美了一区在线观看| 美女视频黄网站mv| 久久精品视频 老司机|