Sodium Hypochlorite
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(Sodium Hypochlorite) Javel water

Javelin water is a toxic substance. Its color is close to yellow and its taste and smell are spicy. The most common substance used as a bleach is Javel water. Sodium hypochlorite ( NaOCl ) is the main active ingredient in javelin . Sodium hypochlorite is a highly potent compound that dissolves a very small percentage (5%) in water and is marketed under different brands as a bleach. Therefore, bleach and Javel water are the same solution of 5% sodium hypochlorite.

Chemical formula: NaOCl

Other names: Anti-Fermin, Sodium Chloride Oxide, Sodium Hypochlorite

Javel water is a mineral and has the property of an alkali. The solution was discovered by Bertoule, and because it was first produced in the Javel neighborhood of Paris, it became known as Javel Water.

Methods of Javel water production:

 Chlorinated caustic soda reaction

The most common way to make sodium hypochlorite is to pass chlorine gas through an alkaline solution of sodium hydroxide, which results in both chlorine oxide ( OCl ) and reduction (in the form of Cl ) simultaneously. The reaction formula is as follows:

Cl 2 + 2NaOH ----> NaCl + NaOCl + H 2 O

 NaCl solution electrolysis

Another major method used to make sodium hypochlorite is the electrolysis of concentrated sodium chloride solution. These electrolyte cells do not have a diaphragm or membrane and are used in high current and in a relatively neutral solution. These cells are designed to be used at low temperatures that dissolve the cathode caustic soda solution in contact with chlorine emitted from the anode.

Sodium bicarbonate reaction with hypochlorite calcium is another way to make sodium hypochlorite is the reaction formula as follows:

Na 2 CO 3 + Ca (OCl) 2 ----> 2NaOCl + CaCO 3

Application of Javel water

•Javel water is used for disinfection and decontamination.

•It is used in industry as a dye and bleach for paper and paper pulp.

•The hypochlorite or Javel water solution kills all germs, including fungi, viruses and bacteria.

•It is used in dairy products, water tanks, sewage disposals, as well as in disinfecting laboratories exposed to the hepatitis virus (such as hemodialysis) and food preparation and distribution facilities.

•A thinner solution is also used to wash infected wounds that are not fresh.

•Sodium chloride oxide is useful as a bleach for cotton, linen, linen, synthetic silk, paper pulp, and citrus fruits. In fact, most chlorine purchased for bleaching cellulose products is converted to hypochlorite before use.

•Vitex is a solution that dissolves some sodium hypochlorite in water that changes the amount of this substance relative to different uses.


Caution in the use of javel water

•Javelin water destroys wool, so it should be used for woolen fabrics as well as silk and leather.

•Excessive wetting of fabrics in javelin water weakens their fibers.

•Javelin water corrodes metals and metal objects.

•Javel water is a highly toxic substance and should not be used indoors and should not be used with Hydrochloric acid and similar substances (i.e., always use it alone and without mixing with other cleansers). Because the two together make up a very toxic and deadly chlorine gas.

•The active ingredient in Javel water (sodium hypochlorite) stimulates and damages the skin, eyes and lungs, so direct contact with the hand should be avoided and sudden entry into the eye should be avoided.


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