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​What is hyprochlorous Acid Water and how it is produced

Despite hypochlorous acid (HCLO) having all the characteristics of being a superior disinfectant for bacteria and viruses, it has not been so popular for general use, because it was difficult to produce, unstable, and hard to store.  

Sodium Dichloroisocyanurate (NaDCC)


The simplest way to produce HCLO is by mixing Sodium Dichloroisocyanurate (NaDCC) tablet or powder with tap water.  When dissolved, it produces a series of complex equilibria among a variety of chlorinated and non-chlorinated isocyanurates and available free chlorine (AFC measured in ppm) in the form of hypochlorous acid (HCLO).  This method is widely used for chlorinating swimming pools, but was never been popular for home usage. Concentration of NaDCC was just too high. Here is an example of how much you need to dilute to produce 50ppm, 100ppm, and 200ppm sourced from Japanese company named 塩素.jp. 


  50ppm   0.5gram   6 liter Water 

100ppm   0.5gram   3 liter Water

200ppm   0.5gram  1.5liter Water

​The raw powder in the market has 60% chlorine concentration level.  It dissolves quickly with water, and produce HCLO, however, handling such high concentrated substance is extremely hazardous. Correct measurement and dilution process are difficult to treat and unsafe. Kao Detergent company on the contrary has been able to reduce NaDCC Chlorine Concentration to 20% and developed tablet to overcome these problems. Product name is "Tablet Haiter" and is marketed with a 3g tablet.   But again, the chlorine concentration is way too high for household use.  They therefore targeted their market for restaurants and commercial facilities where recommended concentration is 200ppm. 

To illustrate its concentration, a 3g tablet needs to be dissolved in 6 liter water to produce 100 ppm.  





Electrolysis with salt, pH reducer, and water

Another simple way to produce HCLO water is by combining salt, pH reducer (normally vinegar), water, and electrolysis. This system to make HCLO on-site is a small container filled with water, to which few grams of salt and few millilitre of vinegar added.  Without a pH reducer, you will end up producing sodium hypochlorite solution often known as bleach.


​Depending on the concentration, bleach is corrosive and may irritate the skin or cause burning, pain inflammation and blister.  Ocular exposure can cause irritation, pain, lacrimation and photophobia.  The recommended concentration of bleach for disinfection has been 600ppm - 800ppm and 50ppm to 200ppm for sanitizing.


Key Facts about HCLO 

HCLO is nontoxic, noncorrosive, inflammable, safe, and inexpensive disinfectant. 


HCLO is proven to be effective for notorious E. coli, Noro-virus, and Covid19 virus.​  This is because HCLO is electrically neutral, and neutral HCLO molecule can penetrate the cell wall of the pathogenic microorganism very easily, thus making it a very effective disinfectant.

At a pH of 5.0, nearly all the chlorine is present as HCLO. 


HCLO is commonly used in healthcare facility cleaning and commercial food sanitation.

HCLO below 50ppm can be used as emergency drinking water.


HCLO is naturally found in our immune system created by our white blood cells to protect from invading bacterias and viruses.

HCLO balanced at pH between 5.0 〜 5.5 does not interfere with skin microflora.   

​HCLO is 17 times more effective then NaCLO (bleach) in disinfecting viruses and bad bacterias.

HCLO was unpopular because it was unstable, difficult to manufacture and store.

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