Sodium Carbonate (Soda Ash) Storage — Tank System Selection
Storing Soda Ash (Sodium Carbonate)? Start Here
Soda ash is a mild base used for pH adjustment in water treatment, plus glass, soap, and cleaning. It's one of the gentler chemicals to store — a standard chemical-grade poly tank with EPDM seals handles it without drama. Quick spec below.
Can you store it in a poly tank? Yes.
Soda ash solution is compatible with HDPE and XLPE tanks — a 1.5 SG rating covers dilute, step up to 1.9 SG for saturated/heavier solution. Use EPDM gaskets and PVC fittings (EPDM is standard for alkaline service). It's mild on poly and hardware alike.
The safety that actually matters
- EPDM gaskets, PVC fittings — the alkaline-service default.
- Mild base — basic eye protection and 110% containment cover it.
- Undissolved soda ash can settle — mix/agitate saturated solutions to keep them consistent at the feed point.
Common questions
- What gaskets for soda ash?
- EPDM, with PVC fittings — standard for alkaline service.
- What tank rating?
- 1.5 SG for dilute pH-adjustment solution; 1.9 SG for saturated/heavier mixes.
- Is it hard to store?
- No — it's one of the easy ones. Just keep saturated solution mixed so it doesn't settle.
Sodium Carbonate (Soda Ash) storage tanks from OneSource
For sodium carbonate (soda ash) 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 Sodium Carbonate (CID 10340, CAS 497-19-8). 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 Sodium Carbonate. cdc.gov/niosh/npg. CDC / NIOSH chemical-specific occupational-safety reference.