Related Clues:

• ___-Mints (Rolaids rival)
• Chemical base
• Soapmaking caustic
• Lye, e.g.
• Caustic cleansing agent
• Chemical in Drano
• Caustic soapmaking compound
• Chemical used to make biodiesel
• Drano ingredient
• Seltzer starter?
• "Plop, plop, fizz, fizz" brand word
• Caustic soap stuff
• NaOH
• Strong solution of sodium
• Soapmaker's supply