Cause: ferrous iron is transported in the body and combined with hemoglobin.

Ferrous ions have strong reducibility and can react with many oxidants, such as chlorine and oxygen. Therefore, it is best to prepare ferrous ion solution now and add some iron powder when storing.

Extended data:

The role of ferrous ions:

1, used to make iron salts, iron oxide pigments, mordants, water purifiers, preservatives, disinfectants, etc.

2. Medically, it is used as an anti-anemia drug for local convergence and blood tonic, and can be used for chronic blood loss caused by hysteromyoma.

3. Analytical reagents and raw materials for ferrite preparation.

4. Feed additive iron fortifier.

5. It can be used as a pesticide in agriculture, and can prevent and control wheat smut, apple pear scab and fruit tree rot; Food grade is used as nutritional supplement, such as iron fortifier, fruit and vegetable colorant, etc.

Baidu encyclopedia-ferrous ion