Sodium hydroxide (NaOH), also known as caustic soda or lye, is a potent white crystalline base that dissolves vigorously in water with significant heat release. Widely used in industries like textiles, pulp and paper, oil refining, biodiesel, water treatment, cleaning, and food processing, it neutralizes acids, saponifies fats, and adjusts pH. It’s supplied by Basekim in solid and liquid forms with custom packaging and full safety documentation for global shipment