sodium phosphite

例句：

1. 1. This chemical is used as a preservative in food storage.
   这种化学物质用于食品储存中的防腐剂。
2. 2. The sodium phosphite helps to prevent the growth of mold and bacteria on the surface of thefood.
   磷酸三钠有助于防止食物表面的霉菌和细菌生长。
3. 3. The sodium phosphite was added to the water to neutralize its acidity.
   磷酸三钠被添加到水中以中和其酸性。