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Polyethylene Glycol Storage — PEG Tank Selection Pharma + Industrial

Storing Polyethylene Glycol? Start Here

Polyethylene glycol (PEG) is a versatile polymer used in everything from pharmaceuticals to cosmetics and industrial lubricants. It comes in different forms, from a liquid to a waxy solid, depending on its molecular weight. PEG is known for being water-soluble and non-toxic, making it a popular choice in many industries. Whether you're using it as an excipient in medications or a thickener in cosmetics, understanding how to store it properly is crucial.

Can you store it in a poly tank?

Yes, polyethylene tanks are suitable for storing liquid-grade PEG (MW 200-600) at room temperature. For solid PEG that needs to be heated, consider using stainless steel tanks with heating capabilities.

Temperature Considerations

One key issue with storing PEG is temperature. Liquid PEG can be stored at ambient conditions, but intermediate molecular weights that solidify at room temperature require heated storage. Ensure your tank system can maintain the necessary temperature to keep PEG in its desired state.

The safety that actually matters

  • PEG is non-toxic, but always follow standard safety protocols when handling chemicals.
  • Ensure all storage tanks are compatible with the temperature requirements of your PEG grade.
  • Use appropriate gaskets and fittings, such as EPDM, to prevent leaks.

Common questions

Can I store PEG outdoors?
Yes, but ensure the tank is well-insulated and protected from temperature fluctuations.
What kind of fittings should I use?
Polypropylene fittings are standard, but always match gaskets to the manufacturer chart for best results.
Is PEG safe for food applications?
Yes, PEG is FDA-approved for direct food contact, making it safe for food-related uses.

Polyethylene Glycol storage tanks from OneSource

For polyethylene glycol storage, specify HDLPE_OR_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.

Designing the storage system, not just picking a tank?

Vendor-neutral engineering guides from our custom fabrication team - material of construction, containment, and code, matched to your chemistry.

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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. 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.
  2. 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.
  3. 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).
  4. 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.
  5. 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.
  6. NIOSH Pocket Guide to Chemical Hazards — occupational exposure limits, PPE, and IDLH data for Polyethylene Glycol. cdc.gov/niosh/npg. CDC / NIOSH chemical-specific occupational-safety reference.

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