ABSTRACT
CHEMISTRY Resorcinol (Figure 24.1), also known as resorcin, meta-dihydroxybenzene, 1,3-dihydroxybenzene, and 1,3-benzenediol, has a molecular weight of 110.11 and a relative density of 1.272. It is slightly more acidic than phenol, with a pKa of 9.15. It is soluble in water, alcohol, ether, and glycerol. It comes in the form of white needle-shaped crystals. Resorcinol crystals oxidize easily and turn pink on contact with light, air, or iron.
