PBQ

Name: Para-Benzoquinone (PBQ)
Chemical Name: 1,4-Benzoquinone
Synonym: p-Dioxobenzene p-Quinonee
Cas no.: 106-51-4
Molecular Formula: C8H4O2
Molecular Weight: 108.1 g/mol

Para-Benzoquinone is an organic chemical compound commonly known as p-Quinone. It is a bright yellow to light brown coloured crystalline solid with a strong pungent, irritating odour. It is manufactured by the oxidation of hydroquinone. It is used as a polymerization inhibitor and as an intermediate in the production of a variety of substances including rubber accelerators and oxidizing agents.

PBQ is able to stain skin dark brown, cause erythema (redness, rashes on skin) and lead to a localized tissue necrosis.

APPLICATION:
Para-Benzoquinone acts as a cross linking agent and is useful in stabilizing unsaturated polyester resins during processing, shipment, and storage in either catalyzed or per catalyzed form.

Used as a chemical intermediate for the manufacture of the agrochemical herbicide, Ethofumesate and the active pharmaceutical ingredient, Calcium dobesilate.