Related Clues:

• Open __
• Sulphuric or nitric
• Boric, e.g.
• Low-pH substance
• Sour-tasting substance
• What an MC wears
• What a rapper raps into
• Carbolic and sulphuric ender
• Base neutralizer
• Scathing
• Target of milk of magnesia
• Emcee's device
• It turns litmus paper red
• The ''A'' in DNA
• Input-jack label