Peracetic Acid

Frequently asked questions

We have compiled the questions and answers that come up most frequently in the context of peracetic acid issues.

Peracetic acid is not only peracetic acid and water. It can exist only as a chemical equilibrium consisting of peracetic acid, hydrogen peroxide, acetic acid and water. Commercial grades of peracetic acid are always equilibrium peracetic acid.

Most of our peracetic acid grades especially those used for disinfection do not burn. However, peracetic acid is classified as an oxidizer and it may cause fire when it comes into contact with combustible material.

Peracetic acid can be diluted with water in any ratio. However, diluted solutions should be used directly because after dilution hydrolysis and decomposition start. Diluted solutions of peracetic acid are neither storable nor transportable.

Peracetic acid can be analyzed by a two step titration showing the content of peracetic acid as well as hydrogen peroxide. For small amounts of PAA test stripes are available on the market.

Always use plenty of water.

Although our products have an extended shelflife there is always a slight decrease of content over time. Product stored over a long time should be analyzed before use and dosing rates should be adapted accordingly. Inspect containers before use.

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