Monohydrate of Iron
(II) Sulphate is fine crystalline compound, practically pure FeSO4.
H2O. Monohydrate is semi-soluble in water and is stable at room
temperature. The difference between Heptahydrate and
Monohydrate products is the degree of drying it underwent. Monohydrate has been
dried further than Heptahydrate, and is more free flowing.
Ferrous sulfate monohydrate is
obtained from a pickling solution containing ferrous chloride, hydrochloric
acid and water and reacted in a precipitating reactor in the presence of excess
It is used as chromate reducers in
cement production. Chromate in the water-soluble form is extremely harmful to
health. Its toxicity can
cause dermatitis among construction workers. Addition of ferrous sulphate to
cement can decrease the amount of soluble chromium in cement.
It is also used as animal feed
additives to stimulate the growth of cattle and poultry. Addition of ferrous
sulphate to animal feed increases egg production, body weight, and the
resistance of heat stress. Ferrous sulfate monohydrate is also a good
fertilizer, which can effectively improve soil and prevent excessive moss
Waste water treatment
Ferrous sulphate monohydrate is
commonly used as coagulant for waste water treatment. It is highly effective,
efficient, and low cost. It is used to treat water that has been contaminated
from textile industry, such as printing, dyeing, and electroplating.