Hypochlorous Acid

Also found in: Dictionary, Thesaurus, Medical, Legal, Acronyms, Wikipedia.

hypochlorous acid

[¦hī·pə′klȯr·əs ′as·əd]
(inorganic chemistry)
HOCl Weak, unstable acid existing in solution only; its salts (such as calcium hypochlorite) are used as bleaching agents.

Hypochlorous Acid


HCIO, a very weak monobasic acid, in which chlorine is in the + 1 oxidation state. Hypochlorous acid is unstable, decomposing gradually even in dilute aqueous solutions. Both the acid and its salts (hypochlorites) are strong oxidizing agents. The crystal hydrate LiClO· H2O withstands prolonged storage. NaClO· H2O decomposes explosively at 70°C, while KClO is known only in the form of aqueous solutions. Ca(ClO)2is completely stable in dry form but decomposes in the presence of water and carbon dioxide. Mg(ClO)2 is more stable. Hypochlorous acid and hypochlorites readily decompose with the liberation of oxygen and thus are commonly used for bleaching pulp and fabrics, as well as for sanitation purposes.

Hypochlorous acid is produced by the hydrolysis of chlorine or by the dissolving of the chlorine oxide Cl2O in water. Calcium hypochlorite, sodium hypochlorite, potassium hypochlorite, and lithium hypochlorite are produced on an industrial scale by the chlorination of milk of lime and the corresponding alkalies.

References in periodicals archive ?
The monochloramine and hypochlorous acid solutions were roughly equivalent in their respective impacts.
The findings in bacteria could perhaps offer new insight into the damaging effects of bleach on our own proteins, she added, noting that hypochlorous acid produced by the immune system has been suspected to play a role in chronic inflammation.
Hypochlorous acid is used to disinfect the pool and hydrochloric acid makes sure the water does not become too acidic or alkaline.
The GEN-X-3[TM] uses regular tap water, electric and a food based additive to create hypochlorous acid.
Further, in the luminol-enhanced chemiluminescence assay that quantifies the production of hypochlorous acid by the myeloperoxidase enzyme all the compounds exhibited varying activity.
The hypochlorous acid solution produced by the Sagewash[TM] Sanitiser kills bugs within seconds, yet there is no need to rinse surfaces afterwards--once the Sagewash[TM] solution has evaporated the chlorine and related substances are gone as well.
For example, after ingesting microbes, neutrophils produce hydrogen peroxide and convert some of it to hypochlorous acid and chloramines, which are disinfectant chemicals.
NeutroPhase (FDA cleared as a 510k medical device) is the only skin and wound cleanser to contain Neutrox, a patented and pure form of hypochlorous acid that contains no bleach impurities.
Producing a hypochlorous acid solution that is up to 120 times more effective than liquid bleach, it is easy to use and allows frequent cleaning with increased effectiveness.
2] and hypochlorous acid which in turn reacts with luminol resulting in CL-emision.
The new chemical formulation contains hypochlorous acid (HOCl) with no hypochlorite, and utilizes other small molecule stabilizers.