Can you store peracetic acid in plastic?

Storing Peracetic Acid Safely: What You Need to Know

Peracetic acid is a powerful antimicrobial agent widely used in industries like food processing, healthcare, and wastewater treatment. But handling and storing it requires care—especially when it comes to choosing the right container.

Not all plastics are created equal. High-strength peracetic acid solutions should only be stored in containers made of materials specifically resistant to its corrosive nature—typically certain grades of polyethylene or fluoropolymers. Even then, the service life of plastic containers is limited to about 12 months. Over time, the chemical can degrade the plastic, increasing the risk of leaks or container failure.

Another critical factor is pressure build-up. Peracetic acid can decompose slowly, releasing gases like oxygen and carbon dioxide. That’s why storage packages are equipped with venting devices. Never cover or block the closures—doing so could lead to dangerous overpressure and possible rupture. Regular inspection of containers is essential. Look for signs of cloudiness, cracking, or swelling, which may indicate degradation.

Store peracetic acid in a cool, well-ventilated area, away from direct sunlight and incompatible materials like strong acids, bases, or metals that could catalyze decomposition. Always follow manufacturer guidelines and consider secondary containment to manage spills.

While plastic is a practical option for short- to medium-term storage, never assume it’s a permanent solution. Beyond a year, even high-quality containers may no longer be reliable. For long-term or large-scale storage, some facilities opt for specialized materials like glass-lined steel or specific alloys, though these come with higher costs.

In short: plastic can work, but only if chosen carefully, monitored regularly, and replaced on schedule. Safety and stability depend on it.