Sodium Hydroxide
TECHNICAL SPECIFICATIONS
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.
APPLICATIONS
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.
SAFETY & RISKS
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.
PACKAGING
In 25kg bags, drums, or bulk tanks for solutions. Airtight containers prevent moisture and CO2 absorption. Transport as corrosive material.
