The Snyder Industries 60 Gallon Vertical Double Wall Liquid Chemical Storage Tank is built for sulfuric acid and similar aggressive chemistries, pairing a primary tank inside an integral secondary containment shell so a primary breach is caught without an external berm. It molds from high density linear polyethylene, carries a 1.9 specific gravity rating, and stands 41 inches tall on a 26 x 26 inch footprint, so it fits tight pump rooms and indoor containment areas where a wide-diameter vertical storage tank will not. This is the double wall tank to specify when secondary containment is a regulatory requirement rather than an option.
Will it work for your chemical?
The 1.9 specific gravity rating is the number that matters here. It means the tank wall is engineered for liquids up to 1.9 times the weight of water, which covers dense chemistries like concentrated sulfuric acid that would over-stress a standard 1.5 SG tank. At 1.9 SG this is the heaviest-duty wall class, so none of the chemistries listed below, including 98% sulfuric acid, require a step-up to a higher-SG tank. Empty, the tank holds roughly 500 pounds of plain water; filled at the full 1.9 rating, contents alone can reach about 951 pounds (60 gallons times 1.9 times the weight of water), so size the slab and any pad for that loaded figure, not the water number. One caveat on this Snyder vertical tank: the factory fitting and gauge layout is not listed in the spec data, so confirm port sizes and locations against the technical drawing on this page or by calling 866-418-1777 before you order. Use the Tank Sizing Calculator and Tank Sizing Guide to right-size capacity and freeboard against your actual draw and refill cycle.
Chemical compatibility
The tank resin is HDLPE rated to 1.9 specific gravity. Compatibility always depends on concentration and temperature, so verify your exact chemical against the OEM chemical-resistance chart, which is concentration- and temperature-specific. A useful rule of thumb on wetted hardware: aggressive acids and oxidizers run Viton gaskets, most salts and bases run EPDM, and peracetic acid uniquely needs Aflas. The following chemistries are listed as compatible with this resin and SG, with the recommended fitting and gasket materials for each:
- Sulfuric Acid at 98% - CPVC fittings, Viton gaskets
- Hydrochloric Acid at 37% - PVC fittings, Viton gaskets
- Hydrofluoric Acid at 48% - PP/PVC fittings, Viton gaskets
- Hydrofluosilicic Acid at 26% - PP/PVC fittings, Viton gaskets
- Phosphoric Acid at 85% - PVC fittings, Viton gaskets
- Acetic Acid at 60% - PP/PVC fittings, EPDM gaskets
- Peracetic Acid at 30% - 316SS fittings, Aflas gaskets
- Hydrogen Peroxide at 50% - PVC fittings, Viton gaskets
- Sodium Hypochlorite below 16.5% - PVC fittings, Viton gaskets
- Ferric Chloride at 50% - PVC fittings, EPDM gaskets
- Aluminum Sulfate at 50% - PVC fittings, EPDM gaskets
- Calcium Chloride at 40% - PVC fittings, EPDM gaskets
- Potassium Hydroxide saturated - PVC fittings, EPDM gaskets
- DEF at 32.5% - 316SS fittings, EPDM gaskets
- Polyaluminum Chloride - PVC fittings, EPDM gaskets
The same tank also serves diesel exhaust fluid and urea blending duty: DEF at 32.5% and urea solution at 50% are both on the chart, run with 316SS wetted hardware. Additional compatible chemistries include ferric sulfate (60%), ferrous sulfate (20%), magnesium chloride (30%), sodium carbonate (30%), potassium carbonate (50%), sodium thiosulfate (40%), sodium bisulfate, sodium bisulfite, ethylene glycol (100%), propylene glycol, zinc orthophosphate, and ozonated water up to 10 PPM. Match every wetted component (fitting, gasket, vent, gauge) to the material called out for your chemical, and start at our Chemical Compatibility Database to cross-check before you finalize the build.
The mistake to avoid
The costliest error on a double wall acid tank is mismatching the wetted hardware to the chemical. The polyethylene shell tolerates 98% sulfuric acid, but the wrong fitting or gasket material will fail first, and on concentrated acid that becomes a containment event. Sulfuric acid here calls for CPVC fittings and Viton gaskets, not the PVC/EPDM combination that serves the milder salts and bases on the chart. The double wall design is your last line of defense, not your first, so spec the connections correctly and review the Snyder Captor double-wall SPCC 40 CFR 112 walkthrough, freeboard sizing per ASTM D1998, level gauge selection, and high-level alarm and cutoff architecture before commissioning.
This tank ships LTL freight from our Marked Tree, Arkansas plant, quoted live to your ZIP code. Get a freight quote with the Freight Cost Estimator or call 866-418-1777 to confirm fittings, gauges, and lead time before you order.
