Lime Water, also known as Calcium Hydroxide Solution (Ca(OH)₂), is a transparent, colorless, and slightly alkaline solution widely used in laboratories. It serves as an essential reagent for detecting carbon dioxide (CO₂) gas and studying acid-base reactions. Because of its accuracy and simplicity, it remains a key material in educational, analytical, and industrial laboratories.

Chemical Identity

• Chemical Name: Calcium Hydroxide Solution
• Common Name: Lime Water
• Chemical Formula: Ca(OH)₂
• Appearance: Clear or slightly cloudy solution
• pH Level: Strongly alkaline

Key Features

Lime water offers several practical advantages for laboratory use.

• It provides instant and visible results in CO₂ testing.
• The solution is easy to handle and store.
• It can be used for multiple chemical demonstrations, making it highly versatile.
• Moreover, it is available in different volumes, allowing laboratories to choose the right amount for their experiments.

Major Applications

1. Carbon Dioxide Detection

When carbon dioxide is passed through lime water, it quickly turns milky due to the formation of calcium carbonate (CaCO₃). This simple yet reliable reaction helps confirm the presence of CO₂ in gas samples. As a result, it is a common classroom experiment to demonstrate gas testing principles.

2. Acid-Base Reaction Demonstrations

Lime water is also ideal for studying neutralization reactions. When it reacts with acidic solutions, water and calcium salts form. This process helps students and researchers understand alkalinity, pH balance, and chemical equilibrium. Furthermore, it serves as an excellent example of base behavior in chemical education.

3. Water Treatment and Purification

In industrial and environmental applications, lime water helps remove hardness and metal ions from water. Additionally, it assists in neutralizing acidic wastewater, making it safer for disposal. Because of these properties, it plays an important role in wastewater management and environmental protection.

Preparation and Handling

To prepare lime water, calcium hydroxide powder is mixed with distilled water and then allowed to settle. The clear supernatant liquid is used as lime water. However, the solution should be stored properly to maintain its quality.

• Always store it in a tightly closed container.
• Avoid exposure to direct sunlight or acids.
• Shake before use, as some calcium hydroxide may settle at the bottom.
• Additionally, use gloves and goggles while handling it to ensure laboratory safety.

Why Choose Lime Water from Labtex Bangladesh

If you are looking for pure and accurately prepared lime water, Labtex Bangladesh (also known as Labtexbd.com) is your trusted supplier. The company offers high-quality laboratory reagents and solutions suitable for schools, universities, and analytical laboratories throughout Bangladesh.

Labtex Bangladesh ensures:

• Scientifically tested and verified chemical quality
• Affordable pricing for both retail and bulk orders
• Fast nationwide delivery and responsive customer service
• Reliable sourcing from certified chemical manufacturers

In conclusion, Lime Water remains one of the most useful and educational laboratory reagents. It demonstrates fundamental chemical concepts, supports research activities, and even contributes to environmental safety. Therefore, purchasing your lime water from Labtex Bangladesh guarantees quality, purity, and dependable performance in every experiment.