The Snyder Industries 6500 Gallon Vertical Double Wall Liquid Chemical Storage Tank is built for outdoor bulk chemical containment where a spill cannot reach the ground. Molded in white high density linear polyethylene with a 1.5 specific gravity rating, this Snyder vertical storage tank nests a primary tank inside an integral secondary containment shell, so the double wall structure holds the leak if the primary is ever compromised. At 6,500 gallons it stands 199 inches tall on a 120 by 120 inch square footprint, sized for jobs where a single large vessel beats a tank farm of smaller drums.
Will this tank work for your chemical?
Start with weight and density. Filled with water this tank carries 54,210 lb; loaded to its full rated capacity it reaches 81,315 lb, so your slab, ring wall, or pad has to be engineered for that mass plus the 120 by 120 inch footprint. The 1.5 specific gravity rating is the hard limit on what you can store: it means the tank wall is built for a liquid up to 1.5 times the density of water. Run the numbers against your actual product before you order, and use the Tank Sizing Calculator and Tank Sizing Guide to confirm fill weight and freeboard for thermal expansion. The molded-in fittings include a flange, an 18 inch PE threaded and vented fitting, and a manway with 15 inch access. That 15 inch manway is what lets a tech reach in for cleanout and mount top-down level instrumentation, so it ties directly to how you gauge this tank. See the technical drawing on this page for fitting placement and elevations before you spec plumbing or a level system.
Chemical compatibility
This is an HDLPE tank rated to 1.5 specific gravity. The resin is high density linear polyethylene, not crosslinked, which matters for some aggressive oxidizers and acids. Always verify your exact chemical, concentration, and temperature against the manufacturer chemical-resistance chart, which is concentration and temperature specific, and confirm fitting and gasket materials for your service. Gasket compound is not a detail to leave to chance: most of these chemicals run EPDM, but the strong oxidizers and acids call for Viton, and peracetic acid needs Aflas. Confirm the elastomer with your fitting order, because the wrong gasket fails long before the tank does.
Within the 1.5 specific gravity rating, this tank is suited to chemicals including Acetic Acid at 60% (PP/PVC fittings, EPDM gaskets), Aluminum Sulfate at 50% (PVC, EPDM), Calcium Chloride at 40% (PVC, EPDM), DEF at 32.5% (316SS fittings, EPDM), Ferrous Sulfate at 20% (PVC, EPDM), Magnesium Chloride at 30% (PVC, EPDM), Sodium Carbonate at 30% (PVC, EPDM), Urea Solution at 50% (PP/PVC, EPDM), and Ozonated Water up to 10 PPM (PVC, EPDM). Browse the full Chemical Compatibility Database for the complete chart.
A common and costly mistake is ordering this 1.5 rated tank for a denser product. Chemicals such as Sulfuric Acid (CPVC fittings, Viton gaskets), Hydrochloric Acid (PVC, Viton), Sodium Hypochlorite (PVC, Viton), Hydrogen Peroxide (PVC, Viton), Ferric Chloride (PVC, EPDM), Ferric Sulfate (PVC, EPDM), Phosphoric Acid (PVC, Viton), Polyaluminum Chloride (PVC, EPDM), Ethylene Glycol (PVC, EPDM), Propylene Glycol (PP/316SS, EPDM), Potassium Hydroxide (PVC, EPDM), Potassium Carbonate (PVC, EPDM), Sodium Bisulfate (PVC/PP, EPDM), Sodium Bisulfite (PVC/PP, EPDM), Sodium Thiosulfate (PVC, EPDM), Hydrofluoric Acid (PP/PVC, Viton), Hydrofluosilicic Acid (PP/PVC, Viton), Peracetic Acid (316SS, Aflas), and Zinc Orthophosphate (PP/316SS, EPDM) call for a 1.9 specific gravity tank, not this one. If your product is on that list, call 866-418-1777 for the 1.9 specific gravity version of this tank rather than ordering this one.
Spill containment and instrumentation
The double wall design is the reason most buyers choose this tank: the integral secondary shell is the containment berm built into the vessel, which simplifies SPCC planning. Our Snyder Captor double-wall SPCC 40 CFR 112 walkthrough covers how that maps to your secondary containment requirement, and the freeboard sizing guide explains the working volume you can actually use after thermal expansion. For monitoring and overfill protection, see our guides on level gauge selection for chemical service and spillover redundancy and high-level alarm architecture for loadout safety.
Footprint and freight at a glance
- Capacity: 6,500 gallons, 199 inches tall
- Footprint: 120 by 120 inches
- Full water weight: 54,210 lb; max rated contents: 81,315 lb
- Construction: white HDLPE, double wall, 1.5 specific gravity rating
- Ships from: Snyder plant in Lincoln, Nebraska
- Freight: LTL, quoted live to your ZIP
This 6,500 gallon Snyder double wall tank ships LTL from the Snyder plant in Lincoln, Nebraska. Freight is quoted live to your ZIP, so get your number with the Freight Cost Estimator or call 866-418-1777 to talk through fittings, instrumentation, and delivery on a tank this size.
