Hydroquinone - C6H6O2

What is Hydroquinone?

Hydroquinone is an aromatic organic compound with a chemical formula C6H6O2. It has two hydroxyl groups binding to a benzene ring in para position. It is a melanin synthesis Inhibitor. It is also known as benzene-1, 4-diol or Quinol. It is a derivative of phenol and has antioxidant properties. It appears as a granular solid white in color. The name Hydroquinone was coined in the year 1843 by Friedrich Wohler. Most widely used industrial methods of producing Hydroquinone are hydroxylation of phenol and cumene process. Other less common methods are by oxidation of various phenols, oxidation of aniline by manganese dioxide, the dry distillation of quinic acid or from acetylene and iron pentacarbonyl. It is widely used for benzene exposure as a biomarker. It naturally occurs in the defensive glands of bombardier beetles.

Properties of Hydroquinone – C6H6O2

C6H6O2 Hydroquinone
Molecular Weight/ Molar Mass 110.11 g/mol
Density 1.3 g cm−3
Boiling Point 287 °C
Melting Point 172 °C

Hydroquinone structure – C6H6O2

Hydroquinone structure width=

C6H6O2 Uses (Hydroquinone)

  • It is used as a reducing agent
  • It is used to treat melasma
  • It is used in the prevention of  methyl methacrylate
  • It is used in skin whitening
  • It is used for benzene exposure as a biomarker
  • It is used in photographic developers
  • It is used in the treatment of acne scars
  • It is used in various cosmetic products

Also Read:

Learn more about the methods of producing hydroquinone, its structure, and uses of Hydroquinone (C6H6O2) from the expert faculties at BYJU’S – India’s largest education company.


Practise This Question

Tony Stark wants to build an engine to propel his Iron Man suit; he wants to achieve an efficiency of 1.5 to make the suit lighter and faster! Which of the following laws of physics would he be violating?