大肉大捧一进一出,无限资源在线观看片中文在线,在电影院里拨开内裤挺进,校花的凌羞辱日记高h女女

你好,歡迎訪問濟南金昊化工有限公司!

專注品質,信賴服務

我們用心做產(chǎn)品服務

咨詢熱線:

13655318786

常見問題

您現(xiàn)在的位置: 網(wǎng)站首頁>>新聞中心>>常見問題順酐在使用過程中的作用是什么?

順酐在使用過程中的作用是什么?

來源:http://www.i6sf.com/ 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,又稱為馬來酸酐,是一種有強烈刺激氣味的無色結晶粉末,于1834年由蘋果酸得到。早期,順丁烯二酸酐是通過苯的催化氧化制備,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晶,有粉末狀、針狀、片狀、丸狀、棒狀、團塊狀或熔融物質,相對密度是1.480,熔點在52.8℃,沸點是202.2℃,閃點: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脂、醇酸樹脂、馬來酸等有機酸,也用作脂肪和油防腐劑等,不飽和聚酯樹脂、醇酸樹脂、、長效碘胺的原料。也是涂料、馬來松香、聚馬來酐、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://www.i6sf.com將以全心全意的熱情為您提供服務,歡迎您的訪問!
This article is provided by the maleic anhydride manufacturer for you, and our website is: http://www.i6sf.com We will provide you with wholehearted enthusiasm and welcome your visit!

相關新聞
巨大巨粗巨长 黑人长吊| 日本欧美久久久久免费播放网| 国产av国片免费| 国产精品无码无卡无需播放器| 狠狠亚洲婷婷综合色五月五月色| 日本精品人妻无码免费大全| 无码人妻久久一区二区三区69| 日本猛少妇色xxxxx猛叫| 久久人妻无码毛片a片麻豆| 高潮时粗俗不堪入耳的话| 国产丰满成熟女人性满足视频| 欧美黑人狂躁日本妞| 人妻~夫の上司犯感との| 国产精品美女久久久久浪潮av| 久久婷婷五月综合色国产香蕉| 岳的大肥屁熟妇五十路99| 最好朋友的老公上我了怎么办| 杂交bucsm人类ssba| 丰满妇女bbwbbwbbwbbw| 天堂网在线最新版www中文网| 公交车短文100篇| 宝贝别忍着喷出来嗯啊哦漫画| 欧美视频| 国产精品久久久久久久久久直播| 怀孕妇女bbwbbw| 青娱乐最新官网| 久久久久亚洲av片无码| 新金瓶悔1一5集免费大片| 把腿抬高我要添你下面小说| 精灵梦叶罗丽第八季| 岳把腿扒开让我添| 乱vodafonewifi熟妇| 精品熟人妻一区二区三区四区不卡| 播放灌醉水嫩大学生国内精品| av无码精品一区二区三区| 18禁白丝喷水视频www视频| 一女多男3根一起进去描述| 粉嫩被黑人两根粗大猛烈进出视频| 双性喂奶给室友八人攻| 草草久久久亚洲av成人片| 亚洲区小说区图片区qvod|