The Hard Truth About Softening Caustic Soda: A Safety-First Guide

Do not hit, crush, or pry the hardened mass with metal tools. Caustic soda is brittle but can shatter, sending sharp, corrosive dust into your eyes or lungs. Even worse, metal tools can contaminate the chemical, and flying chips can cause severe skin injuries. Always dissolve, never fracture.

Remember: When in doubt, throw it out—safely.