The Snyder Industries 750 Gallon Sodium Hypochlorite (UV) Double Wall Tank is a containment-integrated storage vessel molded in Opaque White HDLPE (#880059) and rated to a 1.9 specific gravity — the high-density rating you want when the stored contents weigh substantially more than water. It is UV-stabilized for outdoor sodium hypochlorite service, which matters because hypochlorite degrades faster under light and heat. This is a true double wall tank: a primary storage tank nested inside a secondary containment shell, engineered so a primary breach is caught by the outer wall rather than reaching your pad. Core dimensions are clean and square: 750 gallons, 67 in tall on a 73 x 73 in footprint.
Will it work for your site?
Start with the load math. Filled with plain water this tank carries about 6,255 lb; at its full 1.9 SG rating the contents can reach 11,884 lb. Those are very different numbers, and the pad, anchoring, and any elevated structure have to be designed against the maximum rated weight — not the water weight — for whatever you actually store. Use the Tank Sizing Calculator and the Tank Sizing Guide to confirm 750 gallons and this 73-inch square footprint fit your working volume and available slab area. Because the double-wall configuration routes connections through both walls, confirm fitting locations and sizes against the technical drawing on this page before you set any piping.
The 1.9 SG rating is the decision, not a detail
Snyder builds this double wall tank with a high specific-gravity rating precisely because it is chosen for dense, aggressive contents where secondary containment matters. Do not treat the 6,255 lb water figure as your design load — size the foundation to the 11,884 lb rated maximum. For the freeboard, thermal-expansion, and usable-volume reasoning behind that number, read our walkthrough on Snyder Captor double-wall freeboard sizing per ASTM D1998. If this tank is going into a regulated containment application, our SPCC 40 CFR 112 compliance walkthrough covers how integral double-wall tanks satisfy secondary containment, and the concrete pad sizing guide gives you the ACI 360R-10 framework for the slab under it.
Common mistake to avoid
The biggest error on a double wall tank this heavy is designing the pad around the water weight. A 750-gallon vessel that reads as a routine tank on paper can put nearly 12,000 lb on your slab at full rated load. Undersize the foundation and you get cracking, tilt, and stress on the containment shell. Size to the 11,884 lb figure, keep the base fully and evenly supported, and verify the drawing before committing anchors or penetrations.
This double wall tank ships LTL freight from Snyder's plant in Chowchilla, California, with the rate quoted live to your ZIP — get a number in seconds with the Freight Cost Estimator, or call 866-418-1777 and we will walk the sizing, containment, and delivery details with you.
