How to Make Chlorine Dioxide

How to Make Chlorine Dioxide

Chlorine dioxide is a powerful disinfectant with numerous applications in personal use. While it's readily available in the form of two-part chlorine dioxide kits, some individuals may be interested in understanding the process of making chlorine dioxide themselves. In this article, we will delve into the step-by-step guide on how to make chlorine dioxide safely and effectively, ensuring that you can harness its benefits in various applications.

 How to Make Clo2 at home

Understanding the Chemistry of Chlorine Dioxide:

Before we dive into the process of making chlorine dioxide, let's briefly understand its chemistry. Chlorine dioxide (ClO2) is a yellowish-green gas composed of one chlorine atom and two oxygen atoms. It is a highly reactive compound known for its strong oxidizing and disinfecting properties. When dissolved in water, it forms a potent and versatile solution that effectively eliminates bacteria, viruses, and fungi.

 We have a full detailed information page explaining the science on our Chlorine Dioxide Formula page. Here you can learn the basic chemistry...

The Two-Part Chlorine Dioxide Kit:

To make chlorine dioxide safely and accurately, it is recommended to use a two-part chlorine dioxide kit. This kit typically consists of two components: a sodium chlorite solution and an activator solution, which is usually citric acid or hydrochloric acid. The sodium chlorite solution acts as a precursor, while the activator solution triggers the reaction that produces chlorine dioxide.

 See our Quick and Simple way to Generate Chlorine Dioxide at home with our CDS kit...

Step-by-Step Guide on Making Chlorine Dioxide:

1. Start by gathering the necessary materials: a two-part chlorine dioxide kit, protective gear (gloves, goggles, and a mask), and a clean container for mixing.

2. Put on your protective gear to ensure safety during the process.

3. Measure the desired amount of sodium chlorite solution and pour it into the clean container.

4. Next, measure the appropriate amount of the activator solution according to the instructions provided with the kit. The ratio of sodium chlorite solution to activator solution may vary, so follow the recommended proportions.

5. Carefully pour the activator solution into the container with the sodium chlorite solution.

6. Stir the mixture gently for a few minutes, ensuring that the two solutions are thoroughly combined.

7. Allow the mixture to sit undisturbed for a specified duration, typically indicated in the kit's instructions. This allows the reaction to take place, resulting in the generation of chlorine dioxide.

8. After the specified time, the chlorine dioxide solution is ready for use. Transfer it to a suitable storage container, preferably one made of glass or HDPE plastic.

9. Remember to label the container clearly with the contents and date of preparation.


Making chlorine dioxide can be a straightforward process when following the proper guidelines and using a two-part chlorine dioxide kit. By understanding the chemistry and carefully following the step-by-step instructions, you can safely create chlorine dioxide for various personal use applications. Whether for enhancing personal hygiene, purifying water, or sanitizing surfaces, homemade chlorine dioxide allows you to harness its potent disinfecting properties.

 Still doing more research about CDS in general? You can start from the top with one of our information pages, we recommend if you new to check out our Chlorine Dioxide Uses page.

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