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1、 Overview:

Molecular formula: FeSO4 ? 7h 2O, molecular weight: 278.05

Ferrous sulfate is monoclinic crystal of sky blue or green, with specific gravity of 1.898 and melting point of 64 ℃. It changes from heptahydrate to tetrahydrate at 56.6 ℃, monohydrate at 64 ℃ and anhydrous at 300 ℃. It decomposes when the temperature continues to rise. Soluble in water and corrosive. It absorbs moisture in humid air and is oxidized to rust color by air.

Mode of production: it is a by-product in the production of titanium dioxide from ilmenite.

2、 Quality standard:（GB 10531-2006）

3、 Packing:

50kg woven bag.

4、 Precautions:

Store in a dry and cool place, avoid rain and high temperature.

If stored for a long time, it will turn yellow and ooze.

Period of validity: three months. In case of fire, use water and fire extinguisher to put out the fire.