Quinalizarin

Quinalizarin is a red dye that is derived from anthraquinone. It is used in the creation of wood stains and dyes. Quinalizarin was first synthesized in 1887 by the German chemist August Wilhelm von Hofmann.

History

Quinalizarin was first synthesized in 1887 by the German chemist August Wilhelm von Hofmann. It was one of the first synthetic dyes to be produced, and its discovery marked a significant milestone in the development of the dye industry.

Properties

Quinalizarin is a red dye that is derived from anthraquinone. It has the chemical formula C₁₄H₄O₂(OH)₄. Quinalizarin is soluble in water, alcohol, and ether, but insoluble in benzene and chloroform. It has a melting point of 175-177 °C.

Uses

Quinalizarin is used in the creation of wood stains and dyes. It is also used in the production of inks, paints, and plastics. In addition, quinalizarin is used in the textile industry for dyeing cotton, wool, and silk.

Health effects

Exposure to quinalizarin can cause skin and eye irritation. Ingestion can lead to nausea, vomiting, and abdominal pain. Long-term exposure can lead to skin sensitization and allergic reactions.

See also

• Anthraquinone
• August Wilhelm von Hofmann
• Dye
• Wood stain

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