Iron Sulfide (Fe2S3)-Pellets

Characteristic

Iron(III) sulfide, also known as ferric sulfide or sesquisulfide, is one of the three iron sulfides besides FeS and FeS₂. It is a solid, black powder but decays at ambient temperature into a yellow-green powder.

Chemical formula：Fe₂S₃

Molar mass：207.90 g/mol

Appearance：yellow-green 

Density：4.3 g/cm³

Melting point：decomposition

Solubility in water：very slightly soluble

This is a relatively unstable artificial product that does not occur in nature.