中文字幕有码无码AV,97色在线观看免费视频,真人直播视频免费网站,供人泄欲玩弄的妓子H

你好,歡迎訪問濟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>>公司新聞順丁烯二酸酐結(jié)構(gòu)式和鑒別

順丁烯二酸酐結(jié)構(gòu)式和鑒別

來源:http://www.chummy88.com/ 日期:2023-12-14 發(fā)布人: 瀏覽次數(shù):0

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(jié)晶或白色結(jié)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(shù)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(huán)。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(fā)生聚合反應(yīng)。

20220114052947566.jpg

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(yīng)生成環(huán)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.

相關(guān)新聞
塔城市| 广饶县| 龙陵县| 陵川县| 武夷山市| 奉节县| 云安县| 封开县| 彭泽县| 唐海县| 开阳县| 云梦县| 阜南县| 凉山| 岳阳市| 游戏| 宿迁市| 河池市| 金秀| 武强县| 平果县| 白银市| 磐石市| 杨浦区| 鱼台县| 西昌市| 尉犁县| 石嘴山市| 屏东县| 彩票| 昭苏县| 噶尔县| 那坡县| 郓城县| 高青县| 沈阳市| 玛纳斯县| 竹山县| 禄劝| 龙海市| 乐东|