Peracetic Acid Storage — Food-Industry Sanitizer Tank Selection
Storing Peracetic Acid? Start Here
Peracetic acid (PAA) is a powerful sanitizer used in food processing, dairies, breweries, and pharmaceuticals. It's known for breaking down into harmless byproducts, making it a cleaner choice than chlorine-based options. However, PAA is a strong oxidizer and acid, which means it requires careful handling and specific materials for storage.
Can you store it in a poly tank?
No, you cannot use just any polyethylene tank for peracetic acid. Only high-density linear polyethylene (HDLPE) tanks are suitable. Crosslinked polyethylene (XLPE) is not compatible due to the peroxide component in PAA, which can cause stress cracking over time. Stainless steel fittings and Aflas gaskets are also essential to prevent degradation and ensure safety.
Ventilation is Key
PAA continuously releases vapors, including acetic acid and hydrogen peroxide. Proper ventilation is crucial to prevent pressure buildup and potential combustion risks. Ensure your tank is always vented and consider routing vapors to a scrubber or safe atmospheric release. Temperature control is also important, as decomposition accelerates above 40°C.
The safety that actually matters
- Use HDLPE tanks with 316SS fittings and Aflas gaskets.
- Ensure continuous ventilation to manage vapor release.
- Monitor temperature to prevent accelerated decomposition.
Common questions
- Can I reuse a PAA tank for other chemicals?
- No, tanks used for PAA should be dedicated to its service to avoid dangerous reactions with residues.
- Why can't I use XLPE tanks?
- XLPE is vulnerable to stress cracking from PAA's peroxide component, making it unsuitable for long-term storage.
- What gasket material should I use?
- Aflas gaskets are recommended for their resistance to both peroxide and acid components in PAA.
Peracetic Acid storage tanks from OneSource
For peracetic acid storage, specify HDLPE rated to specific gravity 1.9. Verified, compatibility-matched options:
- Snyder Industries 15 Gallon Heavy Duty Black Open Top Cone Bottom Mixing Tank (1.9 SG)
- Snyder Industries 150 Gallon Plastic Chemical Feed Station Tank (1.9 SG)
- Norwesco 500 Gallon HDPE Vertical Liquid Storage Tank (1.9 SG)
- Snyder Industries 1500 Gallon Plastic Vertical Chemical Storage Tank in White (1.9 SG)
- Snyder Industries 5000 Gallon Plastic Vertical Chemical Storage Tank in White (1.9 SG)
Confirm chemical compatibility and a ZIP freight quote with our team at 866-418-1777.
Strong oxidizer? Resin and material choice make or break it.
Oxidizers degrade the wrong resins and passivation layers. These guides cover oxidizer-rated construction and containment.
Explore: FRP & Fiberglass Tanks · Double Wall Tanks · Chemical Compatibility
Sources & References
All compatibility ratings, hazard classifications, and chemical identifiers on this page are sourced from authoritative third-party publications. Verify against the original references before final specification.
- PubChem Compound Database — entry for Peracetic Acid (CID 6585, CAS 79-21-0). pubchem.ncbi.nlm.nih.gov. National Library of Medicine / NCBI. Canonical chemical-identity reference.
- Snyder Industries Chemical Resistance Recommendations — system-of-construction guidance for polyethylene chemical-storage tanks at industrial ASTM 1.9 SG design rating. SNY-3041 Chemical Resistance Chart. Snyder Industries, current edition. Resin + fitting + gasket + bolt MOC matrix.
- Equistar Technical Tip — Chemical Resistance of Polyethylene — LDPE / MDPE / HDPE rating chart by concentration and temperature, distributed by Enduraplas. enduraplas.com (PDF). Equistar polyethylene resin chemical-resistance data, distributed via Enduraplas.
- NFPA 704: Standard System for the Identification of the Hazards of Materials for Emergency Response. nfpa.org. NFPA 704 'fire diamond' health/flammability/instability/special-hazard rating system (0–4 scale).
- UN Globally Harmonized System of Classification and Labelling of Chemicals (GHS), current revision. unece.org/transport/ghs. GHS pictograms, signal words, and H-statement codes referenced in this guide.
- ASTM D1998 — Standard Specification for Polyethylene Upright Storage Tanks, current edition. astm.org. Cited as the design-specific-gravity standard (typically 1.9 SG) for industrial chemical-service polyethylene tanks.
- NIOSH Pocket Guide to Chemical Hazards — occupational exposure limits, PPE, and IDLH data for Peracetic Acid. cdc.gov/niosh/npg. CDC / NIOSH chemical-specific occupational-safety reference.