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Analysis of Active Substance Sodium Hypochlorite in Biocidal Products: Efficacy and Safety Assessment

What is Sodium Hypochlorite? Use of "Sodium Hypochlorite" in Biocidal Products...

Analysis of Active Substance Sodium Hypochlorite in Biocidal Products: Efficacy and Safety Assessment

What is Sodium Hypochlorite (NaOCl)?

Sodium hypochlorite is a compound generally available in liquid form and used for disinfection purposes. It is commercially available in disinfectants, bleach and water treatment products.

What is the Mechanism of Action?

Sodium hypochlorite reacts with organic substances in water to form hypochlorous acid (HClO). This acid kills microorganisms such as viruses, bacteria and fungi by breaking down their cell walls. Sodium hypochlorite is a disinfectant commonly known as bleach used in surface cleaners.

Sodium hypochlorite is used in many areas such as bleaching, surface cleaning and deodorization. It is used as a disinfectant due to its high antimicrobial effect. However, uncontrolled use of sodium hypochlorite causes serious skin disorders. Especially due to its mutagenic effects, its use is recommended to be restricted by authorized institutions such as the United Nations World Health Organization (WHO) and Food and Agriculture Organization (FAO) and the European Union (EU).

The types of products in which sodium hydrochlorite can be used are specified as follows in the List of Substances with Product Type Identified in Annex A of the “Biocidal Products Regulation”.

  • Product Type 1: Human hygiene
  • Product Type 2: Disinfectants and algicides not intended for direct application to humans or animals
  • Product Type 3: Animal hygiene
  • Product Type 4: Food and feed area
  • Product type 5: Drinking water
  • Product Type 11: Protectors for liquid coolant and processing systems
  • Product Type 12: Slimicides


Use of Sodium Hypochlorite in Biocidal Products

  • As Active Ingredient: Sodium hypochlorite is used as active active ingredient in biocidal products such as disinfectant, algicide, fungicide and bactericide.
  • Application Areas: Sodium hypochlorite is used in health care, water treatment, food processing plants and industrial disinfection processes.


Sodium Hypochlorite Analysis

  1. Efficacy Evaluation:
    • Virucidal, bactericidal and fungicidal action: Sodium hypochlorite is effective on a range of microorganisms, showing an inactivating effect on viruses, bacteria and fungi.
    • Degree of contamination: The effectiveness of sodium hypochlorite is directly related to the concentration and contact time in solution. Generally, higher concentrations and longer contact times provide better disinfection.
  2. Chemical Analysis Methods:
    • Chloroform titration: Sodium hypochlorite is a common titration method used to measure the amount of active chlorine in solution. The concentration of sodium hypochlorite is determined by this method.
    • Isocyanuric acid test: It is used to assess the stability of sodium hypochlorite and the oxidative power of the solution. Isocyanuric acid is a component that affects the stability of sodium hypochlorite.
    • UV spectrophotometry: Can be used to directly measure the concentration and effective chlorine content of sodium hypochlorite.

Nanolab Laboratories Group continues to provide services within the scope of Active Ingredient Analysis in Biocidal Products. We also provide services in Irritation Testing.

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