Crossword clue: of a substance, especially a strong acid; capable of destroying or eating away by chemical action

caustic, corrosive, erosive, mordant, vitriolic.

The most common answer is caustic (7 letters).

5 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

Possible answers

caustic 7 letters wn-def

any chemical substance that burns or destroys living tissue

corrosive 9 letters wn-def

a substance having the tendency to cause corrosion (such a strong acids or alkali)

erosive 7 letters wn-def

of a substance, especially a strong acid; capable of destroying or eating away by chemical action

mordant 7 letters wn-def

a substance used to treat leather or other materials before dyeing; aids in dyeing process

vitriolic 9 letters wn-def

of a substance, especially a strong acid; capable of destroying or eating away by chemical action