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Sodium Fluoride Storage — NaF Water Fluoridation + Pharma Tank

Storing Sodium Fluoride? Start Here

Sodium fluoride is used for drinking-water fluoridation (the smaller-volume cousin of fluorosilicic acid). It's a white solid that only dissolves to about 4%, so it's stored as a dilute solution — easy on a poly tank. The real attention goes to handling the dust safely, since fluoride is toxic.

Can you store it in a poly tank? Yes.

Dilute sodium fluoride solution is compatible with HDPE/XLPE chemical-service tanks — the solution is mild on materials. Use PVC fittings and gaskets per the chart. Because its solubility caps near 4%, you're storing a weak solution, which keeps tank demands low.

The safety that actually matters

  • Fluoride is toxic — control dust when handling the dry powder (respirator, good ventilation), and keep it labeled and segregated.
  • For drinking water, use NSF/ANSI 60 product and an NSF/ANSI 61 tank, with accurate dosing control.
  • 110% secondary containment.

Common questions

Is the solution hard on a poly tank?
No — it's dilute (about 4% max) and mild. HDPE/XLPE handles it easily.
What's the main hazard?
Fluoride toxicity, mostly during dry-powder handling. Control dust and dose accurately.
Drinking-water certified?
Use NSF/ANSI 60 product and an NSF/ANSI 61 tank.

Sodium Fluoride storage tanks from OneSource

For sodium fluoride 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. PubChem Compound Database — entry for Sodium Fluoride (CID 5235, CAS 7681-49-4). 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 Sodium Fluoride. cdc.gov/niosh/npg. CDC / NIOSH chemical-specific occupational-safety reference.

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