C6H4O4

C6H4O4, also known as benzene-1,2,4,5-tetracarboxylic acid, is a chemical compound with the molecular formula C6H4O4. It is a derivative of benzene, with four carboxylic acid groups (-COOH) attached to the benzene ring. This compound is a white crystalline solid at room temperature and is soluble in water.

Benzene-1,2,4,5-tetracarboxylic acid is used as a precursor in the synthesis of various polymers and dyes. It is also used in the production of certain pharmaceuticals and as a chelating agent in analytical chemistry. The compound is typically prepared by the oxidation of benzene using strong oxidizing agents, such as potassium permanganate or chromic acid.

The chemical structure of C6H4O4 consists of a benzene ring with four carboxylic acid groups attached to the 1, 2, 4, and 5 positions. This arrangement gives the molecule a high degree of symmetry and stability. The carboxylic acid groups can undergo various chemical reactions, including esterification, amidation, and condensation, making C6H4O4 a versatile building block in organic synthesis.

In terms of its physical properties, C6H4O4 has a melting point of approximately 300°C and is stable under normal conditions. However, it can decompose at high temperatures, releasing toxic fumes of carbon dioxide and carbon monoxide. Proper handling and disposal procedures should be followed when working with this compound to ensure safety.