1. Hydroquinone is mainly used as a developing agent for photography. Hydroquinone and its alkylates are widely used as polymerization inhibitors in monomer storage and transportation processes, with a commonly used concentration of about 200ppm.

2. Hydroquinone is used as an antioxidant in rubber and gasoline.

3. In the field of processing, adding hydroquinone to hot water and cooling water in closed-loop heating and cooling systems can have a corrosion inhibition effect on the metal on the water side. Hydroquinone is a deoxidizer used in boiler water. It is added to the boiler water during preheating and deoxygenation to remove residual dissolved oxygen.

4. It is used to manufacture anthraquinone dyes, azo dyes, and pharmaceutical raw materials.

5. Used as a corrosion inhibitor, stabilizer, and antioxidant in detergents, as well as a hair dye in cosmetics.

6. Photometric determination of phosphorus, magnesium, niobium, copper, silicon, and arsenic. Polarographic and volumetric determination of iridium. Reducing agents for heteropolyacids, reducing agents for copper and gold.