Sodium hydroxide is the chemical name of caustic soda or lye. Caustic soda is an inorganic compound with the chemical formula NaOH. Sodium hydroxide is a white-colored ionic compound that contains Na+ and OH- cat-ions and anions, respectively. It has a corrosive impact on plant and animal tissues. Sodium Hydroxide is a highly water-soluble compound; absorbs moisture from the atmosphere rapidly and creates a wide range of hydrates.

Like other alkalis, Caustic soda is highly corrosive to skin tissues. It rapidly decomposes living tissues’ protein and lipids. The solution of caustic soda is highly exothermic, which releases heat in large amounts that can cause heartburn or ignite flammables. Caustic soda can be corrosive to metal like aluminum and even to glass, which results in the ground glass binding and damage to glazing. Safety measures are very while working with caustic soda because even vapors of caustic soda can damage eyes and cause permanent blindness.

Caustic soda has a wide range of applications on industrial as well as household levels. It is used on an industrial level for producing sodium salts and detergents, as it is a strong base. In many scenarios, it is used to increase the alkalinity of the mixture or to neutralize acids. Caustic soda is used as a cleaning agent on an industrial level where; it is added to hot water and then used to clean tanks and process equipment. Caustic soda is also used drain opener on the household level. Other than cleaning. It has application in the food industry; that includes preparation of cocoa, chocolates, caramel coloring, olive softening, and soft drink processing. It also includes peeling and washing fruits and vegetables.

CAS NO :- 1310-73-2

USES AND APPLICATIONS FOR CAUSTIC SODA

INDUSTRIES

It is used in numerous industrial applications like: –

• Chemical pulping
• Tissue digestion
• Esterification reagent
• Food preparation
• Cleaning agent
• Water treatment
• Petroleum industry

… and many more.