Hypochlorites are the most commonly used chemical compounds among disinfectants. Sodium hypochlorite is obtained by reaction of chlorine with sodium hydroxide. The solution obtained by mixing chlorine gas with water has an oxidizing nature. This chlorine which has not reacted yet is called active chlorine. In this sense, oxygen chloride ion is defined as active chlorine. In addition, calcium hypochlorite and lithium hypochlorite are chemical compounds that form active chlorine in water. These chlorine compounds are not normally found in nature. Chlorine disinfectant materials are commonly known as chlorine, but when we say chlorine, it is not the chlorine itself, but these compounds.

The disinfectant activity of a compound depends on its concentration and duration of administration. Returns the value of the product of concentration and time. The lower this value, the higher the biocidal efficacy of the disinfectant.

The results obtained by analyzing the amount of active chlorine and data on microbiological efficacy are very important. In hypochlorite solutions, the composition of the product, packaging and transport and storage conditions are factors that affect the concentration of active chlorine.

The strength or effect of hypochlorites is determined by the active chlorine contained in it. Therefore, it is important to determine this content in a correct and reliable way. These values ​​are measured and determined by titration reactions performed in laboratories.

Active chlorine analyzes are also performed in authorized laboratories within the scope of physical and chemical analyzes of disinfectants. These laboratories use world-accepted test methods and test criteria in their studies. The standard considered in the active chlorine analysis is:

• TS 5682 Sodium hypochlorite solution - used in industry and as bleach

This standard covers sodium hypochlorite solution used as bleach in laundry bleaching industry. Active chlorine stability analyzes to be performed on 14 days and 60 days after production date are performed according to this standard.