#alizarin

• Alizarin — A solid organic substance, crystallized in red-orange needles, insoluble in water, initially extracted from the madder root (Rubia tinctorum) and later obtained synthetically from anthracene. It is widely used in the textile industry as a highly stable dye for coloring in intense shades of red, purple, or black, as well as in medicine or microscopy as a chemical indicator.
• Anthracene — A polycyclic aromatic hydrocarbon with the chemical formula C14H10, consisting of three linearly fused benzene rings, appearing as colorless or pale yellow crystals with a strong blue-violet fluorescence under ultraviolet light.
• Anthracene — A polycyclic aromatic hydrocarbon with the chemical formula C14H10, structurally composed of three linearly fused benzene rings; a colorless, crystalline solid substance obtained from the distillation of coal tar, exhibiting an intense blue fluorescence under ultraviolet light. This organic compound serves as a fundamental raw material in the chemical industry for the synthesis of alizarin, various anthracene dyes, and high-performance plastics or optical sensors.