“吊白块”原名甲醛次硫酸氢钠 [(ＣＨ2 ＯＨＳＯ2 Ｎａ)·2Ｈ2 Ｏ],是一种工业漂白剂 ,在一定条件下分解产生甲醛和次硫酸氢钠 ,具有很强的漂白作用。人若误食“吊白块”会损伤肾脏 ,危害身体健康。国家严禁将“吊白块”掺入食品。但近年来 ,仍有食品生产经营者在加工面粉、淀 Formaldehyde sodium hyposulfate [(CH2 OHSO2 Na) · 2H2O] is an industrial bleaching agent that decomposes under certain conditions to produce formaldehyde and sodium bisulfite, which has a strong bleaching effect. People who eat “hanging white” will damage the kidneys, endangering their health. The country is strictly prohibited to “hang white block” into the food. However, in recent years, there are still food producers and processors in the processing of flour and lakes