acidity regulator
food additive which controls acidity or alkalinity
buffer solution
aqueous solution consisting of a mixture of a weak acid and its conjugate base, which resists (to a limited degree) pH change when a strong acid or base is added
buffering agent
weak acid or base used to maintain the acidity (pH) of a solution near a chosen value after the addition of another acid or base
acidifier
inorganic chemicals that either produce or become acid
alkali
basic, ionic salt of an alkali metal or alkaline earth metal chemical element