順酐和順酸字面也就一字之差，其實它們在外形味道上也分辨不出來，但是他們的化學屬性可是千差萬別，下來我們就說下順酐和順酸的鑒別方法：
Maleic anhydride and maleic acid are literally different. In fact, they can't be distinguished in appearance and taste, but their chemical properties are very different. Let's talk about the identification methods of maleic anhydride and maleic acid
順酐廠家
Maleic anhydride manufacturer
1、稱取大約相同的量，用水溶解后，再用堿滴定，消耗堿多的是酐，消耗堿少的是酸。
1. Weigh about the same amount, dissolve it with water, and titrate with alkali. The more alkali consumed is anhydride, and the less alkali consumed is acid.
2、或取少量相同量的樣品溶解于水，用pH計檢測，pH值低的是酐，pH稍高的是酸。
2. Or take a small amount of the same amount of sample dissolved in water, detected by pH meter, the lower pH is anhydride, the higher pH is acid.
3、用熔點檢測也可以，酐與酸的熔點不同。順酐約52~53℃，順酸約130℃。
3. The melting point of anhydride is different from that of acid. Maleic anhydride is about 52 ~ 53 ℃ and CIS acid is about 130 ℃.
4、簡單的辦法，找一小塊不銹鋼片，將兩種樣品各放一點于鋼片兩側，用打火機在兩個樣品中間加熱，先液化并揮發的是順酐。
4. A simple way is to find a small piece of stainless steel, put two kinds of samples on both sides of the steel sheet, and heat them in the middle of the two samples with a lighter. The maleic anhydride is liquefied and volatilized first.
順酐廠家濟南金昊化工有限公司網址：http://www.topcax.com歡迎您的光臨！
Maleic anhydride manufacturer Jinan Jinhao Chemical Co., Ltd http://www.topcax.com Welcome to our company!
