Chemical

Products

Resorcinol

Cas Number

108-46-3

Other Names

Resorcinol[1],

Resorcin,

m-Dihydroxybenzene,

1,3-Benzenediol,

1,3-Dihydroxybenzene,

3-Hydroxyphenol,

m-Hydroquinone,

m-Benzenediol

The formula

C6H6O2

Introduction

Resorcinol (or resorcin) is a benzenediol (m-dihydroxybenzene).

Physical and Chemical Properties
Appearance White crystals or powder
Density 1.28 g/cm3, solid
Melting point 110 °C, 383 K, 230 °F
Boiling point 277 °C, 550 K, 531 °F
Solubility in water 110 g/100 mL at 20 °C
Acidity (pKa) 9.15
Specific gravity 1.27
Vapour density 3.8 (air = 1)
Explosion limits 1.4% (lower)
Initial M.P. ( °C ≥) 108
Resorcinol (% ≥) 99.5
Moisture ( % ≤) 0.2
Ash (% ≤) 0.01
Applications

Used externally, it is an antiseptic and disinfectant, and is used 5 to 10% in ointments in the treatment of chronic skin diseases such as psoriasis, hidradenitis suppurativa, and eczema of a sub-acute character. It is present in over-the-counter topical acne treatments at 2% or less concentration, and in prescription treatments at higher concentrations.

Resorcinol is also used as a chemical intermediate for the synthesis of pharmaceuticals and other organic compounds. It is used in the production of diazo dyes and plasticizers and as a UV absorber in resins.