What chemicals are inside oxygen absorbers?

Dec 03, 2025Leave a message

Hey there! As a supplier of inside oxygen absorbers, I often get asked about what chemicals are inside these nifty little things. So, I thought I'd take some time to break it down for you.

First off, let's talk about why oxygen absorbers are so important. Oxygen can be a real pain in the you - know - what when it comes to preserving food, medicines, and other products. It can cause oxidation, which leads to spoilage, color changes, and a loss of flavor. That's where oxygen absorbers come in. They help to remove oxygen from the packaging, keeping your products fresh for longer.

Now, onto the main question: what chemicals are inside oxygen absorbers? The most common chemical used in oxygen absorbers is iron powder. Iron is a great choice because it readily reacts with oxygen in the presence of moisture. The reaction is called oxidation, and it's the same process that causes iron to rust. When iron reacts with oxygen, it forms iron oxide (rust), effectively removing oxygen from the surrounding environment.

Here's the chemical equation for the reaction:
4Fe + 3O₂ + 6H₂O → 4Fe(OH)₃

This reaction is slow at first but speeds up as the moisture level increases. That's why most oxygen absorbers also contain a small amount of salt. Salt helps to increase the conductivity of water, which in turn speeds up the oxidation reaction. It acts as a catalyst, making the iron react with oxygen more quickly.

Another common ingredient in oxygen absorbers is activated carbon. Activated carbon is a form of carbon that has been processed to have a large surface area. This large surface area allows it to adsorb various gases and odors. In oxygen absorbers, activated carbon helps to remove any unwanted smells and gases that might be present in the packaging. It also helps to improve the overall performance of the oxygen absorber by creating a more stable environment.

Silica gel is sometimes added to oxygen absorbers as well. Silica gel is a desiccant, which means it can absorb moisture. By removing moisture from the packaging, silica gel helps to control the humidity level. This is important because the oxidation reaction of iron with oxygen is moisture - dependent. If the humidity is too high, the reaction might be too fast and could cause the oxygen absorber to overheat. On the other hand, if the humidity is too low, the reaction might be too slow.

Some oxygen absorbers may also contain other chemicals depending on their specific application. For example, in food - grade oxygen absorbers, the ingredients are carefully selected to ensure they are safe for contact with food. Non - food grade oxygen absorbers might have different formulations to meet the requirements of other industries.

Let's talk about the different types of oxygen absorbers we offer. We have Oxygen Absorbers for Quart Jars. These are perfect for home canners and small - scale food storage. They are designed to fit neatly into quart - sized jars, effectively removing oxygen and keeping your food fresh.

Our Self - adhesive Oxygen Absorber is a great option for those who need a quick and easy way to attach the oxygen absorber to the inside of a package. The self - adhesive feature makes it convenient to use, and it can be used in a variety of packaging materials.

The Yome - U Universal Type is a versatile oxygen absorber that can be used in different types of packaging. It's suitable for both food and non - food applications, making it a popular choice among our customers.

Self-adhesive Oxygen Absorber2(001)

When it comes to choosing the right oxygen absorber, you need to consider the size of the package, the type of product you're storing, and the desired shelf - life. Different oxygen absorbers have different capacities, so it's important to select one that can effectively remove the oxygen from your specific package.

If you're in the market for high - quality oxygen absorbers, we're here to help. Whether you're a small business owner looking to preserve your products or a home hobbyist wanting to keep your food fresh, we've got the right solution for you. Our oxygen absorbers are made with high - quality ingredients and are rigorously tested to ensure their performance.

We understand that every customer has different needs, and we're committed to providing personalized service. So, if you have any questions about which oxygen absorber is right for you, or if you need a custom - made solution, don't hesitate to reach out. We'd love to have a chat with you and help you find the best oxygen absorber for your requirements.

In conclusion, oxygen absorbers are a simple yet effective way to preserve products by removing oxygen from the packaging. The main chemicals inside them are iron powder, salt, activated carbon, and sometimes silica gel. These ingredients work together to create a low - oxygen environment that helps to extend the shelf - life of your products.

If you're interested in learning more or making a purchase, feel free to start a conversation with us. We're looking forward to working with you to meet your oxygen absorber needs.

References

  • "Food Packaging: Principles and Practice" by Robertson, G. L.
  • "Handbook of Food Preservation" edited by M. S. Rahman