Soda cum calce, also known as soda lime, is a chemical compound primarily used in various industrial processes, particularly for its ability to absorb carbon dioxide. The term "soda cum calce" is derived from Latin, with "soda" denoting sodium carbonate and "calce" referring to calcium oxide, also known as quicklime.
In its composition, soda cum calce typically consists of a mixture of sodium hydroxide, calcium hydroxide, and water. This concoction is commonly formed by slaking quicklime, a process that involves adding water to calcium oxide, followed by the addition of sodium carbonate. The resulting mixture manifests as a solid, white or off-white material with a characteristic granular texture.
The main application of soda cum calce lies in the removal of carbon dioxide (CO2) from the air, particularly in closed environments such as submarines, diving bells, and even some rebreathing systems used in medical practice. It accomplishes this through a chemical reaction that involves the absorption of CO2 and the formation of sodium carbonate. The process is known as carbon dioxide scrubbing.
Moreover, soda cum calce finds use in several other processes such as glass production, pharmaceutical manufacturing, and water treatment. Its alkaline properties make it suitable for neutralizing acidic solutions, regulating pH levels, and facilitating the removal of impurities.
Overall, soda cum calce plays a pivotal role in various industries, serving as a versatile chemical compound with significant applications in carbon dioxide absorption, pH regulation, and purification processes.
