The Enduraplas 2500 Gallon Black Cone Bottom Tank (SKU THC02500B) is a chemical-service cone bottom tank rated to 1.9 specific gravity, the heavy-duty rating you want when storing dense acids, brines, and treatment chemistries that exceed water weight. Molded in black polyethylene at 2,500 gallons, it stands 120 inches tall on a 90 x 90 inch footprint and drains fully through its cone for complete batch turnover and easy cleanout. The black resin shields contents from UV and light penetration, a real advantage for light-sensitive products like sodium hypochlorite and hydrogen peroxide.
Will this cone bottom tank work for your application?
The 1.9 SG rating is the headline spec, and it determines what you can store. Empty water capacity is 2,500 gallons; full of water that is 20,850 lb, but because the tank is rated to 1.9 specific gravity it carries a maximum rated contents weight of 39,615 lb. That extra ~18,765 lb of headroom is exactly what a dense chemistry consumes — a sulfuric acid (98%) or ferric chloride solution weighs far more than the same volume of water, and a tank rated only to 1.0 or 1.5 SG would be over its limit long before it filled. As a cone bottom, it requires a matching stand to support that load and elevate the discharge; size and confirm yours against the Cone Bottom Tank Stand Compatibility Matrix before you order, and use the Tank Sizing Calculator and Tank Sizing Guide to verify volume and headroom for your batch. If you are weighing cone angles and stand options, the 2500 gallon 15 degree and 30 degree with poly stand buyer's guides walk through the tradeoffs.
Chemical compatibility
This is a high-density linear polyethylene tank rated to 1.9 SG. The resin designation in our data carries a question mark, so confirm HDLPE versus XLPE construction for your specific chemical before committing it to service. Compatibility below is drawn from our chemical compatibility data and is concentration- and temperature-specific — always match your actual conditions against the chart, not just the chemical name. Verified compatible chemistries include Acetic Acid (60%, PP/PVC fittings, EPDM gaskets), Aluminum Sulfate (50%, PVC, EPDM), Calcium Chloride (40%, PVC, EPDM), DEF (32.5%, 316SS fittings, EPDM), Ethylene Glycol (100%, PVC, EPDM), Ferric Chloride (50%, PVC, EPDM), Ferric Sulfate (60%, PVC, EPDM), Ferrous Sulfate (20%, PVC, EPDM), Hydrochloric Acid (37%, PVC, Viton), Hydrofluoric Acid (48%, PP/PVC, Viton), Hydrofluosilicic Acid (26%, PP/PVC, Viton), Hydrogen Peroxide (50%, PVC, Viton), Magnesium Chloride (30%, PVC, EPDM), Peracetic Acid (30%, 316SS, Aflas), 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 Carbonate (30%, PVC, EPDM), Sodium Hypochlorite (under 16.5%, PVC, Viton), Sodium Thiosulfate (40%, PVC, EPDM), Sulfuric Acid (98%, CPVC, Viton), Urea Solution (50%, PP/PVC, EPDM), Zinc Orthophosphate (PP/316SS, EPDM), and Ozonated Water (up to 10 PPM, PVC, EPDM). The gasket choice splits cleanly: if you are storing an oxidizer or a strong acid from this list — hydrochloric, hydrofluoric, hydrogen peroxide, phosphoric, sulfuric, or sodium hypochlorite — spec Viton (or Aflas for peracetic acid); EPDM is brine, glycol, and carbonate service only. Fitting material changes too, so build the fitting train to the chemistry, not the tank. Browse the full Chemical Compatibility Database for concentration and temperature detail on each.
The mistake to avoid
The costliest error on a chemical cone bottom is matching the SG rating to the gallons instead of to the chemical's density. This tank is rated to 1.9 SG for a reason — confirm your chemical's specific gravity falls at or under that number at your storage temperature, and do not assume a water-rated tank can hold the same volume of a dense acid or brine. The second mistake is the fitting train: the fitting package (bulkhead size and outlet configuration) is not specified in this listing, and EPDM gaskets that suit brines and glycols are wrong for the oxidizers and strong acids above. Because the resin code is also unconfirmed, make one verification call to 866-418-1777 that covers all three at once — HDLPE versus XLPE construction, the fitting and gasket train for your chemistry, and stand selection — rather than discovering a gap after the tank ships.
This tank ships LTL freight from the nearest Enduraplas plant — Converse, TX or Neche, ND — with freight quoted live to your ZIP. Gulf, Texas, and Southwest buyers generally ship from Converse, TX; Upper-Midwest and Northern-Plains buyers from Neche, ND. Get your number now with the Freight Cost Estimator, or call 866-418-1777 to confirm SG fit, fitting train, resin, and stand selection before you order.
