Sodium hydroxide (NaOH), also known as caustic soda, is a highly versatile and powerful alkaline compound, especially in its liquid form (typically as a solution in water). It is widely used in industrial, commercial, and even domestic settings. Here are the main uses of sodium hydroxide in liquid form:
Industrial Uses
1. Chemical Manufacturing
• Used to manufacture soaps, detergents, and bleaches.
• Key ingredient in producing chemicals like sodium hypochlorite and sodium phosphate.
2. Petroleum Industry
• Used in the refining of petroleum to remove sulfurous impurities (caustic washing).
• Helps in the manufacture of biodiesel (transesterification process).
3. Textile Industry
• Used in the processing of cotton fabrics (e.g., scouring and mercerization).
• Helps remove waxes and oils from fibers.
4. Paper and Pulp Industry