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About ferrous sulfate

JIUXU INDUSTRIAL (HK) CO., LIMITED | Updated: May 02, 2018

Physical property

Appearance and character: light blue green monoclinic crystal;

Melting point (centigrade): 64 (lost 3 crystalline water);

Relative density (water =1): 1.897 (15 C);

Molecular formula and molecular weight: FeSO4. 7H2O (278.03) FeSO4 (152);

Solubility: dissolved in water, glycerin, insoluble in ethanol.

Chemical property

It is reductive. A poisonous gas is released by high heat decomposition. In laboratory, the reaction of copper sulfate solution with iron can be obtained. It can be weathered in dry air. It is easy to oxidize brown yellow basic ferric sulfate which is hard to dissolve in water in humid air. 10% water solution is acidic to litmus (Ph value is about 3.7). When heated to 70~73 C, 3 molecules of water were lost, and 6 molecules of water were lost to 80~123 C and converted to basic ferric sulfate at temperatures above 156 C.

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