Calcium Oxide – 500 gram Packs

Calcium Oxide, also known as quicklime or calcium monoxide, is an inorganic compound consisting of calcium and oxygen, classified as a basic oxide of an alkaline earth metal. With the chemical formula CaO and a molecular weight of 56.08 g/mol, it is commonly encountered as a white solid in powder, granular, or lump form. Calcium oxide reacts vigorously with water to form calcium hydroxide, releasing considerable heat, making it important for studying exothermic reactions, oxide chemistry, and acid-base behaviour. Its chemical reactivity and alkaline character make it relevant to school and college chemistry practicals, university experiments, and research involving inorganic compounds and chemical transformations. Calcium Oxide for laboratory use is suitable for applications consistent with its supplied grade and specifications. Appropriate protective equipment and moisture-controlled storage are essential because it can cause serious eye damage and skin irritation.

Product Specifications

Specification	Details
Appearance	White powder
Assay	99%
Chemical Name	Calcium Oxide
Alternate Names	Quicklime, Calcium Monoxide, Burnt Lime, Unslaked Lime
Molecular Formula	CaO
Empirical Formula	CaO
CAS Number	1305-78-8
Molecular Weight	56.08 g/mol
Grade	LR Laboratory Reagent

Key Features of Calcium Oxide

• Defined chemical composition: Calcium Oxide has the formula CaO and contains calcium and oxygen in a 1:1 atomic ratio.
• Basic oxide properties: It reacts with water to form calcium hydroxide, demonstrating characteristic alkaline oxide chemistry.
• Exothermic reaction: Its reaction with water releases heat, making it relevant to supervised studies of energy changes during chemical reactions.
• High-temperature stability: Calcium Oxide has a high melting point, making it useful in selected investigations involving refractory inorganic materials.
• Educational laboratory relevance: Its defined composition and characteristic reactivity support inorganic chemistry experiments and demonstrations when appropriate safety controls are in place.

Laboratory Applications of Calcium Oxide

• Inorganic chemistry practicals: Demonstrates the chemical behaviour of basic oxides and the formation of calcium hydroxide through a controlled reaction with water.
• Exothermic reaction experiments: Supports supervised investigations of heat release during chemical reactions, using appropriate temperature monitoring and protective measures.
• Acid-base chemistry studies: Can be used to investigate neutralisation reactions involving calcium oxide or calcium hydroxide formed from it, with suitable experimental controls.
• Quantitative chemical analysis: May be used in selected analytical procedures involving oxide reactions or preparation of calcium-containing materials, provided the method accommodates its reactivity and grade.
• Materials and inorganic research: Serves as a starting material in selected investigations involving calcium compounds, solid-state reactions, and high-temperature inorganic materials.

Why Choose Lab Wale to Buy Calcium Oxide

Lab Wale provides a convenient sourcing option for laboratory chemicals and scientific supplies used by schools, colleges, universities, research centres, and laboratory professionals. When purchasing Calcium Oxide, review the product identification, stated laboratory grade, available specifications, and relevant safety documentation to determine whether it meets your experimental requirements. Selecting the correct chemical and grade helps laboratories plan practical work, research activities, and routine chemical preparation more appropriately. Follow the recommended handling and storage requirements for this reactive inorganic compound.

Frequently Asked Questions About Calcium Oxide

What is Calcium Oxide used for in laboratories?

Calcium Oxide is used in inorganic chemistry experiments, studies of basic oxides, controlled investigations of exothermic reactions, and selected materials research. It can also serve as a starting material for preparing calcium hydroxide. Its suitability for a particular analytical method depends on the procedure, required grade, and applicable safety controls.

What is the chemical formula and molecular weight of Calcium Oxide?

The molecular formula of Calcium Oxide is CaO, and its empirical formula is also CaO because the calcium-to-oxygen atom ratio cannot be simplified further. Its molecular weight, more precisely described as formula mass for this ionic compound, is approximately 56.08 g/mol.

What is the CAS number of Calcium Oxide?

The CAS Registry Number for Calcium Oxide is 1305-78-8. This identifier distinguishes Calcium Oxide from related substances such as calcium hydroxide, which has a different chemical formula and CAS number. Confirm the product identity before ordering or using the chemical in laboratory procedures.

What happens when Calcium Oxide reacts with water?

Calcium Oxide reacts with water to form calcium hydroxide according to the equation CaO + H₂O → Ca(OH)₂. The reaction releases substantial heat and can cause splashing or burns. Water must not be added casually to bulk quantities; experiments require a suitable procedure, appropriate protective equipment, and trained supervision.

How should Calcium Oxide be stored and handled safely?

Store Calcium Oxide in a tightly closed, compatible container in a cool, dry, well-ventilated location protected from moisture. Wear suitable gloves, protective clothing, and eye or face protection, and avoid creating or inhaling dust. Prevent contact with water during storage and follow the current Safety Data Sheet and institutional procedures.

Storage Conditions for Calcium Oxide

Store Calcium Oxide in a tightly sealed, moisture-resistant, compatible container in a cool, dry, well-ventilated area. Protect it from humidity and accidental contact with water because the compound reacts exothermically to form calcium hydroxide. Keep the container properly labelled and segregate the material from incompatible substances, including acids and other materials identified in the applicable Safety Data Sheet.

Precautions for Handling Calcium Oxide

Review the current Safety Data Sheet before use and wear suitable chemical-resistant gloves, protective clothing, and safety goggles or a face shield. Avoid inhaling dust and prevent contact with skin and eyes. Use appropriate ventilation and handle the powder carefully to minimise airborne particles. Never add water without a controlled procedure because the reaction releases heat. Ensure suitable supervision, spill management, and chemical waste disposal in accordance with institutional safety requirements.