What is Calcium Hypochlorite?

Calcium hypochlorite is a chemical compound that has the formula Ca(ClO)2.

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It is commonly referred to together bleaching flour or calcium oxychloride. it is one ionic compound that is consisted of of a calcium cation (Ca2+) and two hypochlorite anions (ClO–). Regardless of being fairly stable in ~ room temperatures, calcium hypochlorite progressively decomposes in moist environments, offering it a properties ‘chlorine’ smell.

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Calcium Hypochlorite Preparation

It is commercially accessible in that is anhydrous and hydrated forms and also is one of the key ingredients of chlorine powder and bleaching powder. Ca(ClO)2 is created on an commercial scale via the reaction that chlorine gas v calcium hydroxide.


The chemical equation because that this reaction is detailed below.

2Ca(OH)2 + 2Cl2 → Ca(ClO)2 + H2O + CaCl2

Generally, bleaching flour is a mixture the calcium hypochlorite, the dibasic type (Ca(ClO2).2Ca(OH)2), and also the dibasic kind of calcium chloride (CaCl2.2Ca(OH)2). Because it consists of two ClO– ions, this compound has actually a high chlorine ease of access when contrasted to salt hypochlorite (NaOCl).

Calcium Hypochlorite Structure

The structure of a Ca(ClO)2 molecule is illustrated below. It consists of one Ca+ ion and also two ClO– ions.


Structure the a Calcium Hypochlorite Molecule

Each chlorite ion has actually a fee of -1 vice versa, the calcium ion has a charge of +2. Therefore, one calcium cation can form ionic bonds through two hypochlorite ions.

Calcium Hypochlorite Properties

1. Chemical Data

Calcium HypochloriteCa(ClO)2
Molar Mass/ molecular Weight142.98 grams per mole
Density in ~ 20oC2.35 grams every cubic centimetre
Melting Point373K (100oC)
Boiling PointDecomposes in ~ 448K (175oC)

2. Physics Properties

Calcium hypochlorite is a white/grey solid at room temperatures.Its solubility in water is 21g/100 mL and also it reacts v the water once dissolved.Ca(ClO)2 has actually a strong smell that chlorine (because that reacts through the water molecules current in air).

3. Chemical Properties

It acts together a strong base because it easily accepts H+ When dissolved in water, the hypochlorite anion accepts a proton indigenous H2O, liberating one OH– ion.The chemistry reaction is provided by ClO– + H2O → HClO + OH–This compound is also a powerful oxidizing agent because it deserve to readily accept an electron.Calcium hypochlorite reacts through hydrochloric acid, yielding calcium chloride (CaCl2), water, and also chlorine gas (Cl2).

What are the provides of Calcium Hypochlorite?

The link Ca(ClO)2 is often used come disinfect large volumes the water in stimulate to make it for sure to drink. The is additionally widely used in swimming pools to sanitize the water body and destroy the germs existing in it. Some other offers of calcium hypochlorite are listed below.

Since it is a great oxidizing agent, this compound is quite valuable in the ar of organic chemistry.It is offered to obtain fragmented aldehydes/carboxylic acids by cleaving the binding in glycols and also keto acids.Ca(ClO)2 can likewise be supplied in the halo type reaction to yield chloroform.The compound deserve to be used to disinfect both wastewater and also drinking water since it has actually a high chlorine availability.

To learn much more about calcium hypochlorite and also other essential calcium compounds, such as calcium hydroxide, register v BYJU’S and download the mobile applications on her smartphone.

The corrosive nature of the hypochlorite moiety renders calcium hypochlorite a dangerous problem that should be stored carefully. It should be stored in a cold, dry environment and also must no be exposed to any kind of metals or acids. If any type of acid come in contact with calcium hypochlorite, extremely toxic fumes of chlorine gas can be produced.

Calcium hypochlorite is generally known as bleaching powder. The is additionally known together calcium oxychloride, the chloride the lime, or the calcium salt of hypochlorous acid.

Yes, calcium hypochlorite is reasonably soluble in water. Since it is one ionic compound, Ca(ClO)2 conveniently dissolves in water and also dissociates into its ingredient ions. In ~ a temperature of 25oC, the solubility the this link in water is roughly equal come 210 grams per litre. That is essential to keep in mind that this link is not soluble in alcohol because it participates in a chemistry reaction v the solvent in such cases.

Calcium hypochlorite is well-known to be the active ingredient in plenty of commercial bleaching agents such together bleaching powder, chlorinated lime, and also chlorine powder. The most important application that calcium hypochlorite is in the sanitization of public swimming pools. It is likewise used come disinfect drinking water. Together an oxidizing agent, calcium hypochlorite is also used in numerous organic reactions.

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On an commercial scale, calcium hypochlorite is usually developed from the chemical reaction in between gaseous chlorine and calcium hydroxide (usually offered in the type of the mineral lime). The chemical reaction between calcium hydroxide and chlorine gas returns calcium hypochlorite, calcium chloride, and also water as the products.


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