The oxidized ferrous sulfate solution, the Yellow ferrous sulfate solution, will not have adverse effects on the plant, but its effect is far less than that before the modification. Because whatabsorbed by plants are the ferrous ions , but most of them are oxidized to trivalent iron ions at this time, which is not easy to be absorbed by plants. However, if it is used for decolorization or coagulation of sewage treatment, the coagulation effect of trivalent iron and ferro 2 is not very different, but the trivalent iron ion does not have the effect of reducing decolorization.

Generally speaking, ferrous sulfate shelf life is marked on various packaging bags for 3-6 months, but usually ferrous sulfate will turn yellow gradually after a period of storage, even become soil. Ferrous sulfate and ferrous sulfate aqueous solutions exposed to air are more likely to turn yellow. This is because ferrous sulfate is exposed to weathering in the air, and ferrous sulfate has reductive properties, and it is easy to be oxidized to iron sulfate by oxygen or other oxidizing substances in the air when contacting with air. The molecular formula of the system changed from the original divalent iron to the trivalent iron. The color also changes from the original blue green to yellow or brown. Especially in humid and ventilated places, the oxidation speed of ferrous sulfate will be accelerated, and the Yellow phenomenon will be more easily produced. With the increase of oxidation degree, the solid ferrous sulfate gradually forms a block, which is as hard as stone.

Lvyuan Environment Group Co.,Limited reminds you that to prevent ferrous sulfate from yellowing, the following aspects should be paid attention: improve the sealing property of ferrous sulfate packaging, reduce the contact between ferrous sulfate and air, and place the dry place. Ferrous sulfate solution is recommended to be used on site, or iron nails, iron flakes, iron powder are put into the solution. In addition, do not put alkaline chemicals, alkaline fertilizers, chemical oxidants and ferrous sulfate together or coagulation preparation, because ferrous sulfate is weakly acidic and reacts with alkaline chemicals, resulting in its loss of effect.