acetylenic bondacetylenic carbonacetylenic linkacetylenic linkageacetylideacetylisableacetylizationacetylization flaskacetylizeacetylizedacetylizing agentachiral compoundachrocidinachrodextrinachromaticachromatic indicatorachromatinacidacid acceptoracid alizarian blue blackacid alizarin blackacid alkylationacid anhydrideacid base behavioracid base catalysisacid base equilibriumacid base indicatoracid base metabolismacid base pairacid base reactionsacid base titrationacid bathacid blueacid carboyacid catalysisacid catalystacid catalyzed reactionacid clayacid cooleracid cureacid decompositionacid depolarizationacid dipacid dyeacid equivalentacid extractionacid fastacid forming elementacid freeacid freeder