one of the dihydric phenols, a colorless
crystalline solid made by sulfonation (see sulfonic
acid) of benzene followed by fusion
with sodium hydroxide. Resorcinol is used to make adhesives, methanal (formaldehyde) resins, dyes, explosives, photographic developers,
and as an antiseptic. Molecular weight
110.1, melting point 111°C, boiling point 281°C.