Ferrous sulfide, chemical formula FeS, dark brown or black block shaped crystals or particles, with large blocks having a metallic luster. The relative density is 4.74 and the melting point is 1193 ℃. Difficult to dissolve in water, easily soluble in dilute acid, releases toxic hydrogen sulfide gas. In humid air, it gradually oxidizes into ferric oxide and sulfur. In its crystal structure, sulfur atoms are densely packed in a hexagonal shape, while iron atoms are surrounded by six sulfur atoms located at the top corner, forming an octahedral structure. Meanwhile, sulfur atoms are surrounded by six iron atoms located at the top corner of a triangular prism. The coordination number of iron and sulfur atoms is 6, and the atomic ratio is 1:1. Ferrous sulfide can be obtained by adding alkali metal sulfides to divalent iron salts. It is produced by mixing iron filings and sulfur powder in industry through high-temperature reaction.

In the laboratory, it is mainly used to produce hydrogen sulfide gas as an analytical reagent. Used in industry to make paints and pigments. It is also used to prepare its ferrous salt. Iron disulfide, chemical formula FeS2, golden yellow crystal. The relative density is 5.0, the melting point is 1171 ℃, and it is difficult to dissolve in water but soluble in dilute strong acids. Prolonged exposure to humid air can transform into ferrous sulfate.

Under vacuum conditions, it is composed of iron powder and sulfur in a certain proportion. In nature, pyrite exists in two forms: pyrite and pyrite, depending on their structure. Pyrite belongs to face centered cubic crystals, with Fe and S2 atomic groups arranged in a sodium chloride type structure. The structure of white iron ore is similar to that of pyrite. Burning pyrite on charcoal produces a blue flame and releases sulfur dioxide gas. Sulfur iron ore is mainly used for refining sulfur and producing sulfuric acid. Ferrous sulfide, chemical formula Fe2S3, yellow green or black solid, with a relative density of 4.3. It decomposes upon contact with water, dissolves in dilute acid, and undergoes a reaction. It can be prepared by heating a certain proportion of iron filings and sulfur to 500 ℃ for reaction.

Typical Applications

Iron pyrite has a variety of industrial applications in many industries. Iron pyrite powder can be used as a raw material in producing sulfuric acid, sulfur dioxide, and iron sulfate and can be used as a catalyst. Iron pyrite powder can be used as a semiconductor material to produce solar cells. It also can be used as an aggregate in concrete. SULFEX Iron Pyrite FeS₂ powders have specific use as a grinding-active filler in resin-bonded grinding wheels and cut-off wheels, brake linings, etc.

Packaging Options

25 kg. paper bags, poly-lined fiber drums, super sacks, and loose bulk