Hydrochloric acid is used in a wide variety of industrial applications. Some of the more common applications include: steel pickling, oil well acidizing, food processing, bio-fuels production, calcium chloride production, ion exchange bed regeneration, and mineral processing.
Hydrochloric acid (HCl) is the aqueous solution of hydrogen chloride gas. It is a strong, corrosive acid, clear to straw yellow in color, derived as a co-product from a variety of chlorination reactions or by burning chlorine with hydrogen.
Hydrochloric acid is produced in solutions up to 38% HCl (concentrated grade), most commonly 31% or 35% depending on application and freight considerations. Solutions for household purposes, mostly cleaning, are typically 10% to 12%, with strong recommendations to dilute before use.