Ferric Chloride is used for Etching Damascus Blades & etching logos onto knives.

Visit this link for a guided video tutorial on how-to-etch. https://www.sdknives.co.za/product/chemical-etching-kit/

The appearance of this product is a clear dark orange to brown colour solution.

A deliquescent salt FeCl3, is used chiefly as an oxidising agent and etching agent in photo-engraving on stainless steel, or etching carbon steels to enhance patterns in Damascus steel.

See below for more information.