Refined naphthalene, a purified form of crude naphthalene, is a white crystalline solid primarily derived from coal tar or petroleum. It has various industrial and chemical uses due to its chemical stability, sublimation properties, and aromatic structure. Here are the main uses of refined naphthalene:
1. Intermediate in Chemical Synthesis
• Phthalic Anhydride Production: The largest use of refined naphthalene. Phthalic anhydride is used to manufacture plasticizers, resins, and dyes.
• Naphthols & Naphthylamines: Used in making dyes, pigments, and other organic intermediates.
2. Dyes and Pigments
• Refined naphthalene is a base compound for azo dyes, vat dyes, and pigment manufacturing due to its aromatic structure.
3. Surfactants and Dispersants
• Used to manufacture naphthalene sulfonates