[dē¦hī·drō·ə¦sēd·ik ′as·əd] (organic chemistry) C8H8O4 Crystals that melt at 108.5°C and are insoluble in water, soluble in acetone; used as a fungicide and bactericide. Abbreviated DHA.
dehydroacetic acid
de·hy·dro·a·ce·tic ac·id
(dē-hī'drō-ă-sē'tik as'id), An antimicrobial agent used as a preservative in cosmetics.