Molysite

Used in anhydrous form as a drying reagent in certain reactions. Used to detect the presence of phenol compounds in organic synthesis; e.g., examining purity of synthesised Aspirin. Used in water and wastewater treatment to precipitate phosphate as iron(III) phosphate. Used in wastewater treatment for odor control. Used by American coin collectors to identify the dates of Buffalo nickels that are so badly worn that the date is no longer visible. Used by bladesmiths and artisans in pattern welding to etch the metal, giving it a contrasting effect, to view metal layering or imperfections. Used to etch the widmanstatten pattern in iron meteorites. Necessary for the etching of photogravure plates for printing photographic and fine art images in intaglio and for etching rotogravure cylinders used in the printing industry. Used to make printed circuit boards (PCBs) by etching copper. Used to strip aluminium coating from mirrors. Used to etch intricate medical devices. Used in veterinary practice to treat overcropping of an animal's claws, particularly when the overcropping results in bleeding. Reacts with cyclopentadienylmagnesium bromide in one preparation of ferrocene, a metal-sandwich complex. Sometimes used in a technique of Raku ware firing, the iron coloring a pottery piece shades of pink, brown, and orange. Used to test the pitting and crevice corrosion resistance of stainless steels and other alloys. Used in conjunction with NaI in acetonitrile to mildly reduce organic azides to primary amines. Used in an animal thrombosis model. Used in energy storage systems. Historically it was used to make direct positive blueprints. A component of modified Carnoy's solution used for surgical treatment of keratocystic odontogenic tumor (KOT).