Method for removing pungent smell in 1, 2-benzisothiazolin-3-one

The invention provides a method for removing pungent smell in 1, 2-benzisothiazolin-3-one, and relates to the technical field of fine chemical engineering, the method comprises the following steps: (1) alkali dissolution: adding BIT into water, and adjusting the pH to be alkaline by using alkali; (2) reaction deodorization: adding a deodorant into the BIT alkali liquor, and reacting for 0.1-4 hours; (3) acidification: adding acid into the deodorized alkali liquor to adjust the pH value to 3-7, wherein the preferable pH value range is 4-7; and separating out BIT, filtering and drying to obtain an odorless BIT product. 本发明提供了一种去除1，2-苯并异噻唑啉-3-酮中刺激性气味的方法，涉及精细化工技术领域，本发明包括以下步骤：(1)碱溶：将BIT加入水中，用碱调pH至碱性；(2)反应除味：向BIT碱液中加入除味剂，反应0.1～4小时；(3)酸化：向除味后的碱液中加酸调pH至3～7，优选pH范围为4～7；BIT析出，过滤，干燥得无味的BIT产品。