The 550 Gallon Vertical Chemical Storage Tank from Snyder Industries (SKU SII-1800000N52) is a molded polyethylene vertical tank built for bulk liquid chemical storage. It stands 75 inches tall on a 48-inch diameter footprint, weighs 110 lbs empty, and ships without a fitting so you can spec the outlet, gasket, and bulkhead materials to match your chemistry. The tank body carries a specific gravity rating of 1.9, meaning it is engineered to hold liquids up to 1.9 times the weight of water, and an 18-inch lid gives you top access for fill, vent, and level instrumentation. The shell carries Snyder certifications 2285 and 2282 - confirm the exact scope with Snyder for your application.
Will this 550 gallon vertical tank work for your application?
Size before you buy. At 550 gallons, this tank holds roughly 4,587 lbs when filled with water and up to 8,715 lbs at the full 1.9 specific gravity rating - plan your pad, saddle, and anchoring around the heavier number for dense chemicals. The 48-inch diameter footprint and 75-inch height determine both floor space and overhead clearance for fill lines and gauges. Run your volume and turnover through the Tank Sizing Calculator and the Tank Sizing Guide to confirm the working capacity and freeboard you actually need. One point in this tank's favor: its 1.9 specific gravity rating meets the highest SG requirement of every chemical on the Snyder chart - including 98% sulfuric, 37% hydrochloric, and 50% ferric chloride - so no heavier-walled tank is required for any listed service.
Chemical compatibility
This is a polyethylene tank with a 1.9 specific gravity rating, per the Snyder Industries OEM chemical resistance chart. The resin is listed as HDLPE with a question mark in our records, so confirm HDLPE versus XLPE (crosslinked) with the manufacturer before committing to chemical service - that distinction changes what this tank can safely hold. Compatibility is concentration- and temperature-specific, and the maximum contents temperature is rated to 120 F / 48 C. That ceiling matters most for the aggressive oxidizers and acids on the list - 98% sulfuric, 37% hydrochloric, 50% hydrogen peroxide, and 30% peracetic - where exotherm or ambient heat can push polyethylene past its rated limit; review service temperature for those before ordering.
Chemicals compatible with this 1.9 SG tank per the OEM chart include Ethylene Glycol (100%, PVC fittings, EPDM gaskets), Ferric Chloride (50%, PVC, EPDM), Ferric Sulfate (60%, PVC, EPDM), Hydrochloric Acid (37%, PVC, Viton), Hydrofluoric Acid (48%, PP/PVC, Viton), Hydrofluosilicic Acid (26%, PP/PVC, Viton), Hydrogen Peroxide (50%, PVC, Viton), Peracetic Acid (30%, 316SS fittings, Aflas gaskets), Phosphoric Acid (85%, PVC, Viton), Polyaluminum Chloride (PVC, EPDM), Potassium Carbonate (50%, PVC, EPDM), Potassium Hydroxide (saturated, PVC, EPDM), Propylene Glycol (PP/316SS, EPDM), Sodium Bisulfate (PVC/PP, EPDM), Sodium Bisulfite (PVC/PP, EPDM), Sodium Hypochlorite (under 16.5%, PVC, Viton), Sodium Thiosulfate (40%, PVC, EPDM), Sulfuric Acid (98%, CPVC fittings, Viton gaskets), and Zinc Orthophosphate (PP/316SS, EPDM). Lower-density chemistries the chart clears at this rating include Acetic Acid (60%), Aluminum Sulfate (50%), Calcium Chloride (40%), DEF (32.5%, 316SS), Ferrous Sulfate (20%), Magnesium Chloride (30%), Sodium Carbonate (30%), Urea Solution (50%, PP/PVC), and Ozonated Water (up to 10 PPM). Always match the fitting and gasket material to your specific chemical, concentration, and temperature; verify the exact combination in our Chemical Compatibility Database before ordering.
The mistake to avoid
The single most common error on a chemical tank is treating the fitting and gasket as an afterthought. This tank ships without a fitting on purpose, and the gasket choice splits sharply: sodium hypochlorite (under 16.5%), hydrogen peroxide (50%), hydrofluoric, hydrofluosilicic, phosphoric, and sulfuric all require Viton rather than EPDM - and sulfuric additionally jumps from PVC to CPVC. A PVC bulkhead with EPDM that is fine for sodium carbonate will fail on any of those. Watch the stainless outliers too: DEF (32.5%) and peracetic acid reject PVC and PP entirely in favor of 316SS, so pricing a default PVC bulkhead for those services is a spec error. Spec the outlet material to the chemistry, not to convenience, and confirm HDLPE versus crosslinked polyethylene before storing any aggressive oxidizer or acid. Plan your top penetrations deliberately - the fitting placement guide, level gauge selection guide, and label and signage compliance guide cover vent, fill, drain, and hazard-marking decisions that are far cheaper to get right before the tank is plumbed.
This 550 gallon Snyder vertical chemical tank ships LTL freight, quoted live to your ZIP, from the nearest Snyder plant - Lincoln, Nebraska, or facilities in Arkansas and West Virginia. See the technical drawing on this page for dimensional detail, get a freight estimate with our Freight Cost Estimator, or call 866-418-1777 to confirm fitting options, resin, and freight before you order.
