What Is Caustic Soda and Where Can You Get It?
Lye, chemical compound
What is Lye? Can I Make Soap Without it? - Oh, The Things We'll Make!
How to Make Caustic Soda. A crucial chemical for our modern…, by Tom Connor, 10x Curiosity
Lye - Wikipedia
Sodium Hydroxide: Definition, Preparation, Properties, and Uses
Sodium Hydroxide, NaOH
Sodium hydroxide, Definition, Common Name, & Uses
How to Prepare a Sodium Hydroxide or NaOH Solution