The Snyder Industries 12500 Gallon Sulfuric Acid Double Wall Tank (SKU 1031100N30) is a 12,500-gallon secondary-contained acid tank molded in Opaque White HDLPE resin (#880046) and rated to a 1.9 specific gravity. The double-wall construction nests a primary tank inside an integral outer containment shell, so one unit delivers both storage and the containment volume that dense acid service demands. It stands 274 inches tall on a 142 x 142 inch square footprint, so plan your pad, roof clearance, and site access around those dimensions before you order.
Will it work for your application?
The 1.9 specific gravity rating is the number that matters. Sulfuric acid is dense, and this tank is built to carry a full charge of it: the sizing data shows a maximum rated contents weight of 198,075 pounds at 1.9 SG, versus 104,250 pounds if you filled the same shell with plain water. That gap is the entire reason a high-SG double wall tank exists, and it is why you never drop a standard 1.0 or 1.5 SG water tank into acid duty. Confirm your acid's actual concentration and operating specific gravity against the 1.9 rating, and confirm the OEM documentation for wall configuration before you commit the tank to a specific service.
Fittings and configuration
Fittings on a Snyder double wall acid tank are configured to the job rather than fixed, so confirm the size, placement, and elastomer materials with us for your installation. Because this is acid service, the fitting and gasket materials must be matched to your concentration and operating temperature using the OEM chemical-resistance chart, which is concentration- and temperature-specific. Call 866-418-1777 with your acid, concentration, and draw-off locations and we will lock the outlet, vent, and fill configuration before the tank is built.
Sizing and structural load
At 198,075 pounds fully loaded, the foundation is not an afterthought. A tank this size needs an engineered concrete pad sized for both point and distributed loads; our concrete pad sizing framework walks through the ACI 360R-10 approach and where the ACI 318 boundary falls. If this unit is part of a spill-prevention program, the Snyder Captor double-wall SPCC 40 CFR 112 walkthrough covers how integral containment maps to those requirements, and the freeboard sizing guide per ASTM D1998 explains the real usable volume once thermal expansion and density are accounted for. To pin down the working capacity you actually need, run the numbers through our Tank Sizing Calculator and Tank Sizing Guide. See the technical drawing on this page for dimensioned detail.
The mistake to avoid
The common error on a double wall acid tank is treating the SG rating as a formality. A 12,500-gallon vessel is a permanent installation; under-rating the specific gravity or the pad for the true loaded weight is a failure you cannot walk back. Match the 1.9 rating to your acid, confirm the fittings and gaskets against the resistance chart for your concentration and temperature, and size the foundation for the full 198,075-pound contents load, not the water figure.
This tank ships LTL freight from the Snyder plant in Lincoln, Nebraska, quoted live to your ZIP based on the 142 x 142 inch footprint and shipping height. Get a freight number from our Freight Cost Estimator, or call 866-418-1777 to confirm specific gravity, fittings, and delivery for your site.
