The Snyder Industries 4500 Gallon Sulfuric Acid Double Wall Tank (SKU 5620000N30) is exactly what its name says: a sulfuric-acid-service double wall tank molded in HDLPE resin (#880046) and rated to a 1.9 specific gravity - the top of the polyethylene range, built for dense, aggressive acid rather than plain water. At 197 inches tall on a 102 x 102 inch footprint, it holds 4,500 gallons inside an integral secondary containment wall, so a primary-tank failure is caught by the outer shell instead of your slab. This is the double wall, built-in-containment acid tank people search for by name when a jobsite needs Snyder containment without pouring a separate concrete berm.
Will it work for your job?
Size an acid tank by density, not by volume alone. Full of water this tank carries about 37,530 pounds; at its 1.9 SG rating the maximum rated contents weight climbs to 71,307 pounds. That roughly 34,000-pound delta between water weight and rated-acid weight is the whole reason foundation design is load-critical here - a tank sized in your head for water and then filled with concentrated sulfuric can approach a load the wall and your pad were never checked for. The 1.9 rating covers concentrated sulfuric acid (which stores near 1.83 SG) with margin, but confirm your specific fluid's SG against that 1.9 ceiling before you order, and run the numbers with the Tank Sizing Calculator and Tank Sizing Guide. The 102 x 102 inch footprint drives your pad size and your setback from walls and equipment.
The mistake to avoid
The two errors that sink a high-SG double wall install are under-building the pad and mismatching fitting and gasket materials to the acid. At more than 71,000 pounds fully loaded, this tank needs a properly engineered foundation - see Concrete Pad Sizing for Above-Ground Polyethylene Tanks for the ACI framework. If the installation falls under SPCC secondary-containment rules, walk through Snyder Captor Double-Wall Tanks for SPCC 40 CFR 112, and set your usable volume with proper freeboard using the Captor freeboard sizing guide. Fitting layout is shown on the technical drawing on this page rather than published as a bolt-on list - verify every fitting, gasket, and O-ring material against the OEM chemical-resistance chart at your exact acid concentration and temperature before filling, because the tank shell and the fitting elastomers do not always share the same limits.
Specs and drawing
Capacity 4,500 gallons; dimensions 197 in H x 102 in W x 102 in L; color Opaque White; HDLPE resin #880046; 1.9 specific gravity rating; double wall construction with integral secondary containment. Because 1.9 SG is already the ceiling of the polyethylene range, this tank is itself the high-density option - there is no heavier-rated poly step above it. Review the technical drawing on this page against your plumbing and containment plan before you order.
This double wall acid tank ships LTL freight from the Snyder plant in Lincoln, Nebraska, quoted live to your ZIP - get your number with the Freight Cost Estimator or call 866-418-1777 to confirm fit, foundation, and delivery for your site.
