Caustic Soda Lye
Caustic Soda Lye
Inorganic Chemical Solution
Caustic soda lye is an aqueous solution of sodium hydroxide with the chemical formula NaOH. It is a clear, colorless to slightly hazy liquid that is highly alkaline and corrosive in nature. The solution generates heat when diluted with water.
It is produced by dissolving caustic soda flakes in water or directly obtained from the chlor-alkali process. Caustic soda lye is widely used in chemical processing, soap and detergent manufacturing, textiles, water treatment, alumina production, and petroleum refining.
Physical & Chemical Properties
NaOH (Aqueous)
30% – 50%
Clear
-
Caustic Soda Lye
Product Specifications| Specifications | Range |
|---|---|
| Sodium Hydroxide (on Absolute Basis) | Min. 47.0% |
| Sodium Carbonate | Max. 0.20% |
| Chlorides (as Cl) | Max. 0.015% |
| Iron (as Fe) | Max. 10 ppm |
| Sodium Hydroxide (on Dry Basis) | Min. 99.5% |
| Specific Gravity | Min. 1.483 g/ml |
Caustic Soda Lye
Caustic Soda Lye Applications
Caustic soda lye is widely used as a strong base in chemical manufacturing. It is essential for producing chemicals like sodium salts, biodiesel, and other industrial intermediates.
Caustic soda lye is a key component in saponification, reacting with fats and oils to produce soaps, detergents, and cleaning products.
Used in pulping and bleaching processes, caustic soda lye removes lignin and improves the quality and brightness of paper products.
In petrochemical processes, caustic soda lye is used for neutralizing acidic components, refining petroleum products, and producing biodiesel.
Caustic soda lye is used to adjust pH, soften water, and remove heavy metals and impurities, ensuring safe and clean water in industrial and municipal systems.
Caustic soda lye is used in food processing for peeling fruits and vegetables, processing cocoa and chocolate, and cleaning equipment.
In textiles, caustic soda lye is used for mercerization of cotton, dyeing, and finishing processes, enhancing fabric strength, luster, and dye uptake.
Caustic soda lye is applied in alum and salt refining to purify raw materials and improve yield during production.