Where can ferrous sulfate heptahydrate be used?

Ferrous sulfate heptahydrate is a common blue-green crystalline compound that plays an important role in many fields. In terms of sewage treatment, it is one of the most cost-effective coagulants and flocculants. It can effectively remove phosphates from wastewater and prevent eutrophication of water bodies. At the same time, its reducing property can be used to treat wastewater containing toxic heavy metals such as chromium.

In agriculture, this substance is a traditional fertilizer for supplementing soil iron and correcting plant iron deficiency yellow leaf disease. It is especially suitable for fruit trees and cash crops that are sensitive to iron demand, such as citrus and peanuts. Ferrous sulfate heptahydrate can promote chlorophyll synthesis and healthy plant growth. In industrial applications, it is used as a raw material to produce iron oxide pigments (such as iron red and iron yellow), other iron salts (such as polyferric sulfate), and as a reducing agent in chemical synthesis.

In addition, it is also used in cement antifreeze and early strength agents, wood preservatives, feed additives to supplement iron elements, and certain types of chemical reaction catalysts. In short, from purifying the environment to nourishing crops to supporting industrial production, ferrous sulfate heptahydrate has demonstrated extensive and practical value due to its unique chemical properties.