ammonium oxalate

例句：

1. 1. This compound is used as a preservative in food processing.
   这种化合物在食品加工中用作防腐剂。
2. 2. The process involves reacting ammonium ions with oxygen gas to form ammonium oxide.
   这个过程涉及将铵离子与氧气反应以形成氨氧化物。
3. 3. Ammonium oxalate is a common ingredient in fertilizers and can help plants grow moreefficiently.
   氨氧化钙是肥料中常见的成分，可以帮助植物更有效地生长。