potassium nitrite

例句：

1. 1.Potassium nitrite is a common chemical used in food preservation.
   亚硝酸钾是一种常见的食品保存化学剂。
2. 2.The potassium nitrite reacts with the sugar to form ammonia gas.
   亚硝酸钾与糖反应生成氨气。
3. 3. In some cases, potassium nitrite is used as a preservative in meat products.
   在某些情况下，亚硝酸钾被用作肉类产品的防腐剂。