Crossword clues for corrosive substance.AnswerClueLYECorrosive substanceCAUSTICSCorrosive substancesSULFURICWith 42-Across, corrosive substancesACIDCorrosive substanceOZONECorrosive substanceERODENTCorrosive substance.ALKALICorrosive substanceLYESCorrosive substancesACIDSCorrosive substancesLYECorrosive substance in pichi-pichi