What is Calcium Oxide (CaO)?

Calcium oxide, usually known as lime, is a chemical compound with the formula CaO. It is believed that quicklime is one of the oldest chemical substances acknowledged to the human race. It also can be known as burnt lime or lime. Know more about at Rajasthan Lime.

Calcium oxide has a medium viscosity and a high surface tension, plus a excessive to intermediate growth and contraction charge. This cloth isn’t risky at ceramic temperatures. Calcium oxide has a mild effect on colour, besides in large quantities while it could have a bleaching effect on iron oxide. It additionally exists within the shade of kaki/tomato reds.

Preparation of Calcium Oxide

The manner that is used to prepare burnt lime is referred to as calcination. It is a method that begins with thermally decomposing the reactants at excessive temperatures but making sure that the temperature is saved properly beneath the melting point.

These reactions are typically held in a rotary kiln. The products shaped due to the reaction are burnt lime and carbon dioxide.

The carbon dioxide that is shaped is immediately eliminated in order that the response is preceded until the of completion of the process in accordance with Le-Chatelier’s principle.

CaCO3 → CaO + CO2

This response is reversible and exothermic in nature in the ahead route.

Difference Between Quicklime and Lime Water?

The chemical system of lime or quicklime is CaO. The chemical call of lime is calcium oxide. On the opposite hand, the chemical components of limewater is Ca(OH)2 and the chemical name of this substance is calcium hydroxide. Get the all details about Lime Powder , Visit Rajasthan Lime.

Properties of Calcium Oxide

It is a very stable compound and withstands excessive temperatures.

 This method is referred to as the slaking of lime.

CaO+H2O → Ca (OH)2

It is an oxide that is primary in nature and forms salts when it comes in touch with an acid.

The preferred molar entropy related to calcium oxide corresponds to forty joules in step with mole kelvin.

CaO+H2SO4 → CaSO4+H2O

Uses of Calcium Oxide

• It is drastically used for medicinal purposes and pesticides.
• It unearths its application in the production of cement, paper, and excessive-grade metal.
• Lime is used as a reagent in laboratories for dehydration, precipitation reaction, and many others.
• It is the most inexpensive alkali available that's an essential ingredient within the manufacturing of caustic soda.
• Calcium is essential to animal lifestyles as the constituent of bones, shells, and teeth. The maximum not unusual of the calcium compounds are calcium carbonate which the potter makes use of as a source of calcium oxide for glazes.

Important Safety Tips

• There are few things that customers ought to maintain in mind regarding Calcium Oxides.
• The reaction between quicklime and water is normally vigorous.
• Quicklime can reason severe infection, mainly when inhaled or if it comes in touch with wet pores and skin or eyes.
• Some of the results of inhalation encompass sneezing, coughing, or laboured respiration.
• Additionally, it is able to additionally bring about stomach pain, nausea burns with perforation of the nasal septum, and vomiting.
• When quicklime reacts with water it may launch enough warmth to even ignite flamable substances.

Also Read : 

Hydrated lime : It's Manufacturing And Category

What is Calcium Lime and It’s Applications