If ferrous sulfate heptahydrate is stored improperly in cold weather, a large number of products will turn yellow, agglomerate, and some even have muddy. So, will ferrous sulfate heptahydrate caking affect the use effect?

Normal ferrous sulfate heptahydrate can be stored for 3 to 6 months at constant temperature. If it is purified or dried ferrous sulfate, its validity can be extended to 12 months due to its good quality. At the end of the shelf life or if the product itself has a high moisture content and is not dry, it is prone to condensation. Ferrous has strong reducibility and can be easily oxidized to Fe3 + in air. Therefore, ferrous sulfate stored for a long time is easier to agglomerate and even form the shape of yellow soil. But in the sewage treatment, ferrous sulfate heptahydrate is a little caking, can be crushed and used normally, the effect remains unchanged. Ferrous sulfate heptahydrate, which has been stored for a long time, can be dissolved at about 148.2℃ and used normally. Although ferrous sulfate heptahydrate is still effective in sewage treatment after caking, Lvyuan Environment Group Co.,Limited reminds us to do a good job in preventing caking. If it cannot be used within the effective time, it should be repackaged or purchased in double-layer film paper bag to reduce the contact between ferrous sulfate heptahydrate and air.

In addition, when using ferrous sulfate, attention should be paid to sealing and partial exhaust to prevent dust from entering the workshop. It is better for general operators to pass special training and strictly follow the operation process. When contacting ferrous sulfate, operators should wear self-priming filter dust cover, goggles, acid and alkali resistant gloves and acid and alkali resistant gloves. In order to prevent dust from contacting with oxidant and alkali, it is better to equip emergency equipment for leakage protection.