Table of Contents
What is Soda Lime?
Soda lime is a mixture of sodium carbonate, and lime (calcium oxide) used to absorb carbon dioxide in diving and aircrew oxygen systems.
Soda Lime Definition
It is a material made of sodium hydroxide and calcium carbonate mixture. Soda lime is used in various ways, including as a fire extinguisher and in the manufacture of glass and ceramics. It is also used in soap production and as a pH adjuster in swimming pools.
Soda Lime Chemical Formula
Soda lime is a mixture of sodium hydroxide and calcium hydroxide. It used in many applications, including water treatment, food production, and pharmaceuticals.
Soda Lime Composition
The soda lime composition is a mixture of sodium hydroxide (NaOH) and lime (CaO). It used to produce glass and other ceramics. The soda lime composition is also used to produce soap.
Properties of Soda Lime
Glass
- transparent
- non-reactive
- resistant to thermal shock
- resistant to most chemicals
Thermal and Mechanical Properties
The thermal and mechanical properties of a material determine how it behaves when subjected to heat or stress. Thermal properties include the material’s thermal conductivity and thermal expansion coefficient, while mechanical properties include Young’s modulus and tensile strength.
Thermal conductivity is a material’s ability to transfer heat. The higher the thermal conductivity, the faster the material will heat up. The thermal expansion coefficient measures how much the material will expand when heated. Young’s modulus a measure of a material’s stiffness, while tensile strength is a measure of the material’s ability to resist being pulled apart.
Soda Lime Formula
Sodium Bicarbonate (Baking Soda) ………………………………………………. 80%
Potassium Hydroxide ……………………………………………………………. 20%
Water ………………………………………………………………………………….. 100%
This formula is for a concentrated solution. To make a weaker solution, use less of the concentrated formula.
Functions of Soda Lime Glass
Soda lime glass is a type of glass that commonly used in windows, eyeglasses, and other objects that require transparency. This type of glass made from soda ash and lime. The soda ash also used to lower the glass’s melting point, and the lime makes the glass more durable.
Definition
A type of mortgage in which the interest rate fixed for the life of the loan.
The mortgage rate will not change, regardless of what happens in the market.
Physical Form of Soda Lime
Soda Lime is a solid absorbent used in various applications, particularly in medical settings. It is commonly found in the form of small, granular beads or pellets. These beads are usually white or off-white in color and have a powdery texture.
Properties of Soda Lime:
- Alkaline Nature: Soda Lime is an alkaline substance due to the presence of compounds like calcium hydroxide (Ca(OH)2) and sodium hydroxide (NaOH). This property makes it effective in absorbing acidic gases.
- Hygroscopicity: Soda Lime is highly hygroscopic, meaning it has a strong affinity for absorbing moisture from the surrounding environment. This characteristic makes it crucial to store Soda Lime in dry and airtight containers to prevent it from getting activated prematurely.
- Absorption of Carbon Dioxide: One of the primary functions of Soda Lime is its ability to absorb carbon dioxide (CO2). When exhaled air passes through Soda Lime, it reacts with the alkaline compounds, forming stable carbonates and effectively removing CO2 from the gas mixture.
- Non-Flammable and Non-Reactive: Soda Lime is non-flammable and does not react with most common chemicals. This property ensures its safety during handling and use.
- Limited Reusability: Soda Lime is a single-use absorbent and cannot be reused. Once its absorption capacity is exhausted, it needs to be replaced.
- Odor: Soda Lime has a mild, characteristic odor, which is normal and expected due to its chemical composition.
- Shelf Life: Soda Lime has a limited shelf life, and it is essential to check the expiry date before use. Proper storage in a dry and airtight container can help maintain its effectiveness over time.
In medical applications, Soda Lime is often used in anesthesia machines to remove exhaled carbon dioxide from the breathing circuit during surgeries. It plays a vital role in maintaining proper gas exchange and ensuring patient safety. Additionally, Soda Lime finds applications in other industries, such as gas purification and carbon dioxide removal from closed environments.
Uses of Soda Lime
Soda lime used in a number of industrial and commercial applications. Some of the most common uses of this material include:
- Production of glass
- ceramics
- Production of chemicals
- pharmaceuticals
- Production of food additives
- also the fragrances
Also read: Preparation and Properties of Sodium hydroxide
Frequently Asked Questions (FAQs) on Soda Lime
Soda Lime is a white or off-white granular solid with a powdery texture.
Soda Lime is commonly used in medical settings, such as in anesthesia machines, to remove exhaled carbon dioxide from the breathing circuit. It helps maintain proper gas exchange during surgeries.
No, Soda Lime is a single-use absorbent and should be disposed of properly after its absorption capacity is exhausted.
Soda Lime is generally considered safe to handle under normal conditions. However, it is essential to follow proper safety guidelines while using it to avoid any potential health risks.
Soda Lime has a mild, characteristic odour, which is normal and expected due to its chemical composition.
Soda Lime contains a mixture of calcium hydroxide (Ca(OH)2) and sodium hydroxide (NaOH). When CO2 passes through the Soda Lime, it reacts with these alkaline compounds to form stable carbonates, effectively removing CO2 from the gas mixture.
No, Soda Lime has a limited shelf life, and it is essential to check the expiry date before use. Proper storage in a dry and airtight container can help maintain its effectiveness over time. What is the physical form of Soda Lime?
How is Soda Lime used in medical applications?
Can Soda Lime be reused?
Is Soda Lime hazardous to handle?
Does Soda Lime have any odour?
How does Soda Lime work as a CO2 absorbent?
Can Soda Lime be stored indefinitely?
