精品人妻无码一区二区三区狼群-精产品99永久免费网页版-区二区欧美性插B在线视频网站-国产亚洲精品久久久久久牛牛-有码av-亚洲精品无码不卡在线播HE-亚洲国产无线乱码在线观看-狠狠碰在线视频-国产人伦人妻精品一区-少妇性夜夜春夜夜爽A片-国产成人精品综合在线观看-国产精品久久久久无码AV色戒-国产亚洲精品久久久无码网站,色欲AV国产精品一区二区,久久精品5在热,伦理 电影在线观看,亚洲自慰无码一区二区三区,天堂资源官网在线资源,欧美日韩精品人妻中文,精品无码国产自产在线观看水浒传 ,国产精品色欲亚洲三区软件,午夜五区,麻花天美星空视频,国产黄片一级片,国产免费内射又粗又爽密桃视频,日日摸天天碰中文字幕,亚洲中文无码乱人伦在线,小荡货小浪女,四川传媒分秒视频,人妻系列无码专区,蜜芽久久精品无码专区,久久精品国产视频澳门,国产又色又爽又黄的片,国产精品久久久久久久嫩草,成人午夜视频一区二区无码,久撸网,免费人成,97久久精品无码一区二区欧美人,亚洲色图狠狠爱,国产欧美亚洲123区,国产精品老熟女久久久久,好烫好涨被尿灌满了BL,黄色网址免费在线观看

順丁烯二酸酐又名馬來酸酐或失水蘋果酸酐，常簡稱順酐。無色正交針狀結晶或白色結晶性粉末，有強烈刺激氣味，凝固點52.8℃，沸點202℃，易升華。溶于水、丙酮、苯、氯仿等多數有機溶劑。主要由苯或碳四餾分中的正丁烷或丁烯氧化而制得，是不飽和聚酯及有機合成的原料。

Maleic anhydride, also known as maleic anhydride or dehydrated malic anhydride, is commonly referred to as maleic anhydride. Colorless orthogonal needle shaped crystalline or white crystalline powder, with a strong pungent odor, a freezing point of 52.8 ℃, a boiling point of 202 ℃, and easy sublimation. Soluble in most organic solvents such as water, acetone, benzene, chloroform, etc. Mainly produced by the oxidation of n-butane or butene in benzene or C4 fractions, it is a raw material for the production of unsaturated polyester and organic synthesis.

順丁烯二酸酐在25℃時在下列溶劑中的溶解度( gllOOg)：丙酮227，乙酸乙酯112，氯仿52.5 I苯50 I甲苯23.4；鄰二甲苯19.4；四氯化碳0. 60；石油醚0.25。溶于醇生成酯。溶于二氧六環。受熱升華。遇高熱、明火或與氧化劑接觸，有引起燃燒的危險。有腐蝕性。在冷水中緩慢水解，生成馬來酸。與強氧化劑接觸能引起燃燒和爆炸。若溫度超過66℃、與胺類或堿金屬接觸會發生聚合反應。

The solubility (gllOOg) of maleic anhydride in the following solvents at 25 ℃: acetone 227, ethyl acetate 112, chloroform 52.5 I benzene 50 I toluene 23.4; Ortho xylene 19.4; Carbon tetrachloride 0.60; Petroleum ether 0.25. Dissolve in alcohol to form esters. Dissolved in dioxane. Heat sublimation. There is a risk of combustion when exposed to high heat, open flames, or contact with oxidants. It is corrosive. Slowly hydrolyze in cold water to produce maleic acid. Contact with strong oxidants can cause combustion and explosion. If the temperature exceeds 66 ℃ and comes into contact with amines or alkali metals, polymerization reactions will occur.

鑒別:順丁烯二酸酐又名馬來酸酐，主要又苯或碳四餾分中的正丁烷或丁烯氧化而制得，是不飽和聚酯以及有機合成原料。順丁烯二酸酐用于鑒別共軛二烯反應生成環狀化合物。

Identification: Maleic anhydride, also known as maleic anhydride, is mainly produced by the oxidation of n-butane or butene in benzene or C4 fractions. It is an unsaturated polyester and organic synthetic raw material. Maleic anhydride is used to identify cyclic compounds generated by conjugated diene reactions.