Chemical

Products

Hydroquinone

Cas Number

123-31-9

Other Names

Hydroquinone

Idrochinone

Quinol

1,4-Dihydroxybenzene

1,4-Hydroxy benzene

The formula

C6H4(OH)2

Introduction

Hydroquinone, also benzene-1,4-diol or quinol, is an aromatic organic compound that is a type of phenol, a derivative of benzene. It has two hydroxyl groups bonded to a benzene ring in a para position. It is a white granular solid. Substituted derivatives of this parent compound are also referred to as hydroquinones.

Physical and Chemical Properties
Physical state and appearance White needle crystal.
Molecular Weight 50.06 g/mole
Boiling Point 113.5°C (236.3°F)
Flash point 72°C
Melting Point -51.7°C (-61.1°F)
Specific Gravity 1 (Water = 1)
Vapor Density 1.1 (Air = 1)
Dispersion Properties See solubility in water, methanol
Melting Point˚C 173.2
Solubility in CH₃COOH Clear
Residue in Ignition% 0.001> OK
Heavy metal as Pb% 0.001> ok
Iron% 0.001> OK
Purity% 99.8
Resorcinol% < 0.1
Applications

1. It is majorly used in cosmetics majotly in Skin depigmentation

2. As a polymerization inhibitor, hydroquinone prevents polymerization of acrylic acid, methyl methacrylate, and other monomers that are susceptible to radical-initiated polymerization. This application exploits the antioxidant properties of hydroquinone