Butyl hydroxyhydroquinone detection

Application field 1: Hydroquinone is mainly used as a developer 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. Used as an antioxidant for rubber and gasoline&Nbsp; 3. In the field of treatment, adding hydroquinone to the hot and cooling water of closed circuit 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, which is added to the preheated boiler water for 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. A reducing agent for heteropoly acids, and a reducing agent for copper and gold. Clinical application of hydroquinone lotion: hydroquinone is oxidized from aniline to hydroquinone, which is then reduced to colorless or white crystalline particles. Hydroquinone is a traditional decolorization drug that can effectively treat pigmented skin diseases. Although hydroquinone has therapeutic effects, its stability is poor. In March 1999, a hydroquinone lotion was developed to overcome the difficulty in preserving hydroquinone cream and observe its clinical efficacy in treating melasma&Nbsp; 56 patients with chloasma with complete clinical data, including 9 males and 47 females; Age range from 21 to 47 years old, with an average of 28 years old; The course of the disease ranges from 2 weeks to 10 years, with an average of 4.5 years. They are all outpatient patients in the dermatology department. Randomly divided into a treatment group of 30 cases and a control group of 26 cases, with no significant differences and comparability between the two groups. [2]

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