Name: Hydroquinone

English name: Hydroquinone

Other name: Hydroquinone

Chemical formula: C6H6O2

Molecular weight: 110.1

CAS registration number: 122-331-9

Melting point: 172°C

Boiling point: 287°C

Water solubility: easily soluble in hot water, soluble in cold water, ethanol and ether, slightly soluble in benzene

Degree of density: 1.32815

External view: white needle crystal, changing color when exposed to light

Flash point: 165°C

Application: black and white developer, anthraquinone dye, azo dye, rubber antioxidant, stabilizer and antioxidant

Safety description: hazardous chemicals

Hazard symbol: 61725

Dangerous goods transportation number: 2662

Vapor pressure: 0.13kPa/132.4℃

Flash point: 165°C

Auto-ignition point: 516℃

Relative density: 1.32815 (20℃, 4℃)

Application field

1. Hydroquinone is mainly used as a photographic developer. Hydroquinone and its alkyl compounds are widely used as inhibitors added during monomer storage and transportation, and the commonly used concentration is about 200 ppm. To

2. Used as antioxidant for rubber and gasoline, etc.

3. In the processing field, adding hydroquinone to the hot water and cooling water of the closed-circuit heating and cooling system can inhibit corrosion of the metal on the water side. Hydroquinone is used as an oxygen scavenger for boiler water. When the boiler water is preheated to remove oxygen, hydroquinone is added to it to remove residual dissolved oxygen. To

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

5. Used as corrosion inhibitor, stabilizer and antioxidant of detergent, and also used as hair dye in cosmetics.

6. Photometric determination of phosphorus, magnesium, niobium, copper, silicon and arsenic. Polarographic and volumetric determination of iridium. Reducing agent of heteropoly acid, reducing agent of copper and gold.