sodium metabisulfite

例句：

1. 1. This product is used as a preservative in food processing.
   这种产品在食品加工中用作防腐剂。
2. 2.Sodium metabisulfite is commonly used to treat skin conditions such as eczema.
   亚硫酸钠常用于治疗如湿疹等皮肤疾病。
3. 3. The chemical reaction between sodium metabisulfite and water produces hydrogen ions, which can be beneficial for cleaning.
   亚硫酸钠与水之间的化学反应产生氢离子，这对清洁是有益的。