DIYChemicals Sodium Hydroxide (NaOH), commonly referred to as Lye or Caustic Soda, is a high-purity industrial-grade chemical widely used for soap making, metal etching, and various DIY and industrial applications. Available in multiple resealable packaging sizes ranging from 2lbs to 40lbs, this versatile product is ideal for both hobbyists and small business users. Made and packaged in Texas, USA, with no additives or fillers, our Sodium Hydroxide ensures the highest quality for any project, from cold or hot process soap making to cleaning and metal etching. It's perfect for adjusting pH levels, cleaning equipment, or etching metals, ensuring reliable and consistent results. Be sure to check the Material Safety Data Sheet (MSDS) for safety precautions. Important Notice: This product is not intended for food, pharmaceutical, or personal care applications.