Acetic Acid Storage — 60% & 80% Tank System Selection
Storing Acetic Acid? Start Here
Acetic acid (concentrated vinegar, basically) is a common food-processing, pharmaceutical, and chemical-intermediate liquid. A chemical-grade poly tank stores it well — the one thing to note is a concentration step: heavier concentrations want a higher-rated tank. Quick spec below.
Can you store it in a poly tank? Yes.
Acetic acid is compatible with HDPE and XLPE chemical-service tanks. Match the tank rating to the strength: around 1.5 SG for ~60%, stepping up to 1.9 SG for ~80%. Use EPDM gaskets and PP/PVC fittings with stainless, Hastelloy, or titanium bolts. (Very concentrated "glacial" acetic is a tougher case — confirm with us if that's what you're running.)
The safety that actually matters
- It's an acid with a strong vinegar smell — ventilate the area, wear eye protection.
- Flammable at higher concentrations — keep ignition sources away from concentrated acetic.
- 110% secondary containment. Food-grade acid + NSF-61 tank if it contacts product.
Common questions
- What tank rating do I need?
- About 1.5 SG up to ~60%, and 1.9 SG around 80%. Match it to your strength.
- What gaskets?
- EPDM, with PP or PVC fittings.
- Food-grade use?
- Yes — food-grade acid in an NSF/ANSI 61 tank. It's common in food and pharma.
Acetic Acid storage tanks from OneSource
For acetic acid storage, specify HDLPE_OR_XLPE rated to specific gravity 1.9. Verified, compatibility-matched options:
- Snyder Industries 22 Gallon ASTM XLPE Black Heavy Duty Vertical Storage Tank (1.9 SG)
- Snyder Industries 150 Gallon XLPE Chemical Feed Station Tank (1.9 SG)
- Snyder Industries 500 Gallon ASTM XLPE Black Double Wall Tank (1.9 SG)
- Snyder Industries 1500 Gallon 45 Degree XLPE Cone Bottom Tank in White (1.9 SG)
- Snyder Industries 5000 Gallon XLPE Vertical Liquid Storage Tank with ASTM Certification (1.9 SG)
Confirm chemical compatibility and a ZIP freight quote with our team at 866-418-1777.
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 Acetic Acid (CID 176, CAS 64-19-7). 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 Acetic Acid. cdc.gov/niosh/npg. CDC / NIOSH chemical-specific occupational-safety reference.