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苯甲酸

 
 
單價 面議對比
詢價 暫無
發貨 河南付款后3天內
過期 長期有效
更新 2013-09-04 09:38
 

梁笑

個人會員第13年
資料未認證
保證金未繳納
  • 河南
  • 上次登錄 2013-09-02
  • 梁笑 (女士)  
詳細說明

性狀:苯甲酸為無色、無味片狀晶體。熔點122.13℃,沸點249℃,相對密度1.2659(15/4℃)。在100℃時迅速升華,它的蒸氣有很強的刺激性,吸入后易引起咳嗽。微溶于水,易溶于乙醇、**等有機溶劑。苯甲酸是弱酸,比脂肪酸強。它們的化學性質相似,都能形成鹽、酯、酰鹵、酰胺、酸酐等,都不易被氧化。苯甲酸的苯環上可發生親電取代反應,主要得到間位取代產。
應用:苯甲酸及其鈉鹽可用作乳膠、牙膏、果醬或其他食品的抑菌劑,也可作染色和印色的媒染劑。也可以用作制藥和染料的中間體, 用于制取增塑劑和香料等, 也作為鋼鐵設備的防銹劑。
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