: a dark purple salt KMnO4 used as an oxidizer and disinfectant
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Indeed, laser technology has revolutionized denim finishing, enabling companies to achieve worn and aged effects without potassium permanganate and manual scraping.—Meghan Hall, Sourcing Journal, 24 Feb. 2026 The air purifiers use carbon filters to remove hydrogen sulfide and other gases, plus potassium permanganate filters to clear pathogens.—Walker Armstrong, San Diego Union-Tribune, 13 Dec. 2025 In technique, which replaces potassium permanganate in denim finishing with a one-cycle system.—Andrea Onate, Footwear News, 3 Dec. 2025