Salicylic acid is an important organic synthetic raw material, widely used in medicine, pesticides, dyes, rubber, food and perfume fields. In the pharmaceutical industry, the main pharmaceutical products of salicylic acid are sodium salicylate, Holly oil (methyl salicylate), aspirin (acetylsalicylic acid), salicylic acid amine, phenyl salicylic acid. In the dye industry, it is used to produce mordant pure yellow, direct yellow 3GN, direct Yellow GR, direct Brown 3GN, acid mordant Brown G, acid mordant yellow GG, acid yellow complex dyes.

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Salicylic acid is a multifunctional beta-hydroxy acid (BHA) widely utilized for its keratolytic, anti-inflammatory, and preservative properties. Its most prominent application is in the cosmetic and dermo-pharmaceutical industry, where it serves as a gold-standard ingredient for treating acne, psoriasis, and dandruff by exfoliating dead skin cells and clearing clogged pores. In the pharmaceutical sector, it is a key precursor in the synthesis of acetylsalicylic acid (Aspirin) and various external analgesics for pain relief. Beyond healthcare, it has significant industrial applications as a preservative in food and timber, and as an intermediate in the production of dyes and perfumes. In agriculture, it is used as a plant signaling molecule to enhance systemic acquired resistance (SAR) against pathogens and environmental stress.