Sodium Hydroxide
Sodium hydroxide, commonly called caustic soda or lye, is a white, odorless, hygroscopic solid with formula NaOH and molecular weight 40.00 g/mol. It has a density of 2.13 g/cm³, melting point of 318°C, and boiling point of 1390°C. Highly soluble in water (up to 1090 g/L at 20°C), it generates heat upon dissolution, forming strongly alkaline solutions with pH around 13-14. It absorbs CO2 from air, forming sodium carbonate. Produced via electrolysis of NaCl or lime-soda process.
Sodium Hydroxide
Essential in soap and detergent production, paper manufacturing, water treatment for pH control, petroleum refining, textiles, food processing, and metal extraction. Neutralizes acids and saponifies fats.
Highly corrosive, causing severe burns to skin, eyes, and mucous membranes; inhalation may damage lungs. Reacts exothermically with water, acids, and metals, producing hydrogen gas. Wear protective gear; UN1823 (solid), Hazard Class 8.
In 25kg bags, drums, or bulk tanks for solutions. Airtight containers prevent moisture and CO2 absorption. Transport as corrosive material.
