Why is sodium hypochlorite unstable?

Sodium hypochlorite is unstable. Chlorine evaporates at a rate of 0.75 gram per day of active chlorine from solution. When sodium hypochlorite dissolves in water, two substances are formed that play a role in oxidation and the disinfection processes. These are hypochlorous acid and the less active hypochlorite ion.

Which is better sodium or calcium hypochlorite?

When buying disinfectant for your pool, you’ll probably most commonly see cal-hypo. But if you live in a region where calcium deposits are an issue, sodium hypochlorite might be the more effective way to go. Just make sure that you’re testing all your levels frequently and using it with a stabilizer like CYA.

Is calcium hypochlorite stronger than sodium hypochlorite?

When considering the chemical structure of these two compounds, calcium hypochlorite contains two hypochlorite anions associated with one calcium cation whereas sodium hypochlorite contains one hypochlorite anion associated with one sodium cation. Moreover, calcium hypochlorite is more stable than sodium hypochlorite.

What is difference between sodium hypochlorite and calcium hypochlorite?

Sodium hypochlorite is generally used and dissolved in water at various concentrations. Sodium hypochlorite solutions are clear, greenish to yellow liquids with an odor of chlorine. Calcium hypochlorite is a white solid that readily decomposes in water releasing oxygen and chlorine. It also has a strong chlorine odor.

What is the difference between bleach and calcium hypochlorite?

The calcium hypochlorite form of chlorine is a solid that is easy to introduce into pool water. In addition to the chlorine itself, calcium and other inert ingredients make up the remainder of the chemical. Household bleach is a liquid that contains sodium hypochlorite, which is simply chlorine in its liquid form.

Does calcium hypochlorite raise chlorine levels?

The component of cal hypo that disinfects your pool is the chlorine. Most commercially sold cal hypo products contain anywhere between 65\% and 75\% chlorine in the mixture. For every 1ppm of free chlorine (FC) in your pool, calcium hypochlorite adds about 0.8 ppm of calcium into the swimming pool water.