# sodium or calcium hypochlorite is related to 2.5% active chlorine?

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is sodium or calcium hypochlorite related to 2.5% active chlorine? in a cleaning product it has the following composition: sodium or calcium hypochlorite, active chlorine

Edited by gamer87
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• gamer87 changed the title to sodium or calcium hypochlorite is related to 2.5% active chlorine?
8 hours ago, gamer87 said:

is sodium or calcium hypochlorite related to 2.5% active chlorine? in a cleaning product it has the following composition: sodium or calcium hypochlorite, active chlorine

Hypochlorite, ClO-, ions have bleaching power just as free chlorine does. As there are several types of hypochlorite it is convenient to express their bleaching power in terms of the active chlorine equivalent, in order to have a common standard for their efficacy as bleaches. More here: https://en.wikipedia.org/wiki/Percent_active_chlorine

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Is the concentration of active chlorine in a solution the same as the concentration of sodium hypochlorite or calcium present in this product as well? How is the concentration of active chlorine 2.5% classified to generate chlorine gases and hypochlorous acid causing corrosion of metals and other objects?

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30 minutes ago, gamer87 said:

Is the concentration of active chlorine in a solution the same as the concentration of sodium hypochlorite or calcium present in this product as well? How is the concentration of active chlorine 2.5% classified to generate chlorine gases and hypochlorous acid causing corrosion of metals and other objects?

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active chlorine 2.5% and hypochlorite is the same substance?
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14 minutes ago, gamer87 said:


active chlorine 2.5% and hypochlorite is the same substance?

Read the link. There is even a table of various hypochlorites that shows you what the chlorine equivalent of each one is.

From this you will see it is not possible to answer your question unless you say which hypochlorite you are talking about. That's because the molecular weights of the various hypochlorites are different, so the chlorine equivalent by weight of each will differ.

Edited by exchemist
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Sodium hypochlorite
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16 minutes ago, gamer87 said:

Sodium hypochlorite

That will be the second item in the table. So 1 g of that hypochlorite (the solid substance) is equivalent in bleaching power to 0.593g of chlorine. If you had a different hypochlorite, the figure would be different. Chlorine is a gas, whereas these materials are solid salts. So they are all different substances, but all of them release "active" chlorine atoms in the same way so they bleach things in the same way as chlorine does.

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The cleaning product on the label has sodium hypochlorite, active chlorine 2.5% does this generate corrosive vapor to metals, electronic boards and DVD discs?

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On 5/20/2021 at 1:10 PM, gamer87 said:

The cleaning product on the label has sodium hypochlorite, active chlorine 2.5% does this generate corrosive vapor to metals, electronic boards and DVD discs?

Yes I think it will. Hypochlorite solution reacts in much the same way as chlorine itself and gives off chlorine gas as well.

P.S. More about how it works here: http://www.chm.bris.ac.uk/motm/bleach/bleachh.htm

Edited by exchemist
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active chlorine 2.5% is many gases?

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5 hours ago, gamer87 said:

active chlorine 2.5% is many gases?

No, the "active chlorine" % quoted on a bottle of bleach is a measure of the strength of the bleach. It tells you how much chlorine a certain concentration of hypochlorite is equivalent to.

2.5% means that the concentration of sodium hypochlorite (in your case) has the same strength, as a bleach, as a solution containing 2.5% dissolved chlorine. It behaves like a chlorine solution of 2.5% , even though sodium hypochlorite is not the same substance as chlorine gas.

I understand you are concerned with possible corrosion of electronic components. My advice would be that your sodium hypochlorite solution is likely to be just as corrosive as 2.5% chlorine would be.

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• 4 weeks later...

active chlorine 2.5% in bleach gerates gas vapor condensation in metals and electronics devices and dvd discs and gerates corrosion?

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