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(yè)>>新聞中心>>公司新聞馬來(lái)酸酐和琥珀酸酐有什么區(qū)別?

馬來(lái)酸酐和琥珀酸酐有什么區(qū)別?

來(lái)源:http://m9660.cn/ 日期:2021-09-17 發(fā)布人: 瀏覽次數(shù):0
聚酯樹脂,醇酸樹脂,農(nóng)藥,富馬酸,紙張?zhí)幚韯┑?。馬來(lái)酸酐是一種重要的有機(jī)化學(xué)中間體,可用于制造塑料工業(yè)中的增塑劑。造紙工業(yè)中的紙張加工劑;合成樹脂工業(yè)中的不飽和聚酯樹脂;涂料工業(yè)中的醇酸涂料;中馬拉硫磷的合成;制藥行業(yè)磺胺藥。近年來(lái),主要用作原料的琥珀酸和酒石酸工業(yè)迅速發(fā)展,它們?cè)诠こ探ㄔO(shè),食品調(diào)味劑和生物溶劑中的應(yīng)用也在擴(kuò)大。由馬來(lái)酸酐的下游衍生物,例如1,4-丁二醇,四氫呋喃,γ-丁內(nèi)酯等也已得到很大發(fā)展。
Production of polyester resin, alkyd resin, pesticide, fumaric acid, paper treatment agent, etc. Maleic anhydride is an important organic chemical intermediate, which can be used to manufacture plasticizers in plastic industry. Paper processing agent in paper industry; Unsaturated polyester resin in synthetic resin industry; Alkyd coatings in coating industry; Synthesis of malathion in production; The pharmaceutical industry produces sulfa drugs. In recent years, succinic acid and tartaric acid industries, which are mainly used as raw materials, have developed rapidly, and their applications in engineering construction, food flavoring agents and biological solvents are also expanding. Downstream derivatives produced from maleic anhydride, such as 1,4-butanediol, tetrahydrofuran, γ- Butyrolactone has also been greatly developed.
順丁烯二酸酐
Maleic anhydride
物化性質(zhì):室溫下為白色顆粒,針狀,薄片,棒狀,塊狀或團(tuán)塊,具有強(qiáng)烈刺激性。相對(duì)密度1.48,熔點(diǎn)52.8°C,沸點(diǎn)202.2°C,在較低溫度(60-80°C)下也能升華,溶于乙醇,乙醚和丙酮,與水形成馬來(lái)酸。可燃物,其蒸氣和粉塵與空氣混合形成爆炸性混合物。
Physicochemical properties: at room temperature, it is white particles, needle, sheet, rod, block or mass, with strong irritation. The relative density is 1.48, the melting point is 52.8 ° C and the boiling point is 202.2 ° C. It can also sublimate at a lower temperature (60-80 ° C). It is soluble in ethanol, ether and acetone and forms maleic acid with water. Combustible, its vapor and dust are mixed with air to form explosive mixture.
琥珀酸酐
Succinic anhydride
性質(zhì):無(wú)色針狀或粒狀晶體,溶于乙醇,氯仿和四氯化碳,微溶于水和乙醚??捎脽崴畬⑵渌鉃殓晁帷p119.6;bp261oC,d1.503。
Properties: colorless needle or granular crystal, soluble in ethanol, chloroform and carbon tetrachloride, slightly soluble in water and ether. It can be hydrolyzed to succinic acid by hot water. mp119.6; bp261oC,d1.503。
用途:GB2760-90中規(guī)定的食品加工助劑,用于合成藥物,農(nóng)藥,酯和樹脂,也可用于琥珀酸的合成和分析試劑。
Uses: food processing aids specified in gb2760-90 are used for the synthesis of drugs, pesticides, esters and resins, and also for the synthesis and analysis of succinic acid.

相關(guān)新聞
欧美在线日韩,国产在线看| 天天干天天艹天天日天天| 欧美猛区| 久久久久99精品成人片三人毛片| 日本婷婷五月中文字幕在线观看| 干B视频免费观看视频| 美女黄页网站下载| 99久久婷婷国产踪合精品青草千草| 日逼逼插视频| 欧美亚洲社区| 国产porn最新在线播放国产| 日本一品道久久综合| 国产啊啊嗯嗯啊| 日韩不卡超级高清国产五区| 国产欧美一区二区porn| 伦理影视国产精品久久 | 免费av二区| 日本欧美色图一区二| AV福利无码| 日本中国美国操99| 色婷婷一二三| 日韩精品91久久天堂| 欧美日韩ai视频| 日韩另类3p| 久久久久久久久久久久午夜小电影| 日韩色青久无| 一区二区三区曰本AV| 中文字幕不一区不卡在线观看| 最新一本道色色色色色色| 国产欧美成人一区二区二区男技师 | 人人人妻人人澡人人人人爽欧美一区 | 国产白丝内射| 久热久女女| 国产精品水嫩水嫩草| 大鸡巴性交网站| 久久精品成网人| 天天曰天天摸人人看| 最猛熟妇色女| 国产殴美成人精品| 熟女精品成人| 欧美巨臀一区二区|