Sodium Hydroxide — Powerful Alkali for Cleaning, Manufacturing & pH Control - 20lb Pail - Case of 2 PailsSodium Hydroxide, also known as lye or caustic soda, is a highly caustic metallic base and alkali salt. Available in pellets, flakes, and solution forms, this compound is widely recognized for its powerful cleaning capabilities and is essential across countless industrial applications. Uses: Found in many household and commercial cleaning products, especially drain openers and oven cleaners, where it breaks down grease and organic blockages. Also used