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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 either HDLPE or crosslinked polyethylene (XLPE) rated to specific gravity 1.9. Verified, compatibility-matched options:

Confirm chemical compatibility and a ZIP freight quote with our team at 866-418-1777.

Storing a corrosive acid? Material of construction is everything.

Acids attack the wrong metals fast. These vendor-neutral guides help you match resin, liner, and containment to your acid and concentration.

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.

  1. 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.
  2. 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.
  3. 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.
  4. 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).
  5. 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.
  6. 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.
  7. 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.

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