NaOCl & ClO2
NaOCl & ClO2
(OP)
Hi
I'd like to know the corrosion rates of the stainless steel(304)pipes used in 3% NaOCl(Sodium Hypochlorite) and
8% Clo2(Chlorine Dioxide) service.
Thanks in advance
I'd like to know the corrosion rates of the stainless steel(304)pipes used in 3% NaOCl(Sodium Hypochlorite) and
8% Clo2(Chlorine Dioxide) service.
Thanks in advance





RE: NaOCl & ClO2
cheers,
gr2vessels
RE: NaOCl & ClO2
The hypochlorite ion (OCl-) is aggressive to stainless steels, acting in a similar way to wet chlorine gas, and like the chloride ion (Cl-), is a dangerous pitting corrosion hazard.
Pitting or crevice corrosion can occur on most stainless steel grades in a 5% solution at ambient temperatures.
There is an additional risk of stress corrosion cracking (SCC) at higher temperatures.
Stainless steels should not be considered suitable for storage or transport tank applications with concentrated (15%) hypochlorite solutions or bleaches (5%).
http://www.bssa.org.uk/topics.php?article=35
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Metal Corrosion