Sree Manohari Chemicals

Caustic soda flakes, also known as sodium hydroxide (NaOH) or lye, are a highly corrosive and versatile chemical compound in the form of white, odorless flakes. It is a strong base or alkali, meaning it has a pH of 14, and is characterized by its ability to readily absorb moisture and carbon dioxide from the air. Properties and characteristics

• Appearance: White, odorless, crystalline flakes.
• Highly Soluble: Readily dissolves in water, releasing heat in an exothermic reaction.
• Hygroscopic and Deliquescent: Absorbs moisture from the air and can dissolve in it, notes HiMedia.
• Corrosive: Highly alkaline and corrosive to skin, eyes, and mucous membranes.
• Melting Point: 319°C.

Uses and applicationsCaustic soda flakes are widely used in various industrial and household applications:

• Pulp and Paper Industry: Used in the pulping and bleaching processes to break down lignin and separate cellulose fibers. It's also used to de-ink recycled paper.
• Textile Industry: Essential for mercerizing cotton fibers to enhance strength, luster, and dye absorption. It's also used in dyeing and scouring processes.
• Alumina Refining: Crucial in the Bayer process to extract alumina from bauxite ore, states Prakash Chemicals International.
• Soap and Detergent Production: A key ingredient in the saponification process, reacting with fats and oils to create soap. It's also used in the production of various cleaning products.
• Water Treatment: Utilized for pH adjustment, neutralizing acidic wastewater, removing heavy metals, and improving water quality.
• Chemical Manufacturing: Serves as a vital reactant or catalyst in the production of a wide range of chemicals, including solvents, plastics, and pharmaceuticals.
• Petroleum Refining: Used in desulfurization to remove sulfur compounds and other impurities from crude oil fractions.
• Food Processing: Employed in various food processing applications, such as peeling fruits and vegetables, and in food preservation to inhibit mold and bacteria growth.
• Drain Cleaner: Highly effective in dissolving grease, hair, and other organic matter that can clog drains.