The Chem-Tainer 100 Gallon 20 Degree Plastic Vertical Open Top Cone Bottom Tank (SKU TC3036CA) is a 100-gallon polyethylene cone bottom tank built for batch chemical service where you need the vessel to drain clean instead of leaving product on a flat floor. The cone floor lets solids and residual liquid migrate to the center outlet at the apex, and the open top gives you full access for manual fill, mixing, and inspection. It stands 36 inches tall on a 30 x 30 inch footprint, so it fits inside a stand or containment basin without a forklift-width aisle. This is the tank operators search for as an open top cone bottom tank or 100 gallon cone bottom tank when they want a small-batch dosing or day tank that empties down to a small heel.
Will it work for your application
Empty, this is a manageable vessel; full, it is not. With water it carries roughly 834 pounds of contents, and at its full 1.5 specific-gravity rating it can hold up to 1,251 pounds of product. Size the stand, saddle, or platform to the loaded weight, not the empty shell, and confirm the cone is supported continuously around its base so the weight transfers into the structure rather than hanging on the outlet. Because this is an open-top tank, your primary fitting decision is the center outlet at the cone apex that handles your drain and dosing line; verify the height, diameter, cone angle, and outlet location against the technical drawing on this page before you build the support. Use the Tank Sizing Calculator and Tank Sizing Guide to confirm the cone-bottom geometry matches your dosing volume and drain rate.
Chemical compatibility
This tank is molded from polyethylene with a 1.5 specific-gravity rating. The resin is recorded as HDLPE with an open question on cross-link status, so confirm HDLPE versus XLPE with us before committing it to chemical service, because that distinction changes which chemicals it will hold long-term. At its 1.5 rating, this tank handles the following at the listed concentrations: Aluminum Sulfate at 50% (PVC fittings, EPDM gaskets), Calcium Chloride at 40% (PVC, EPDM), DEF at 32.5% (316SS, EPDM), Ferrous Sulfate at 20% (PVC, EPDM), Magnesium Chloride at 30% (PVC, EPDM), Sodium Carbonate at 30% (PVC, EPDM), and Urea Solution at 50% (PP/PVC, EPDM). Two more are confirmed compatible but do not yet have a database page, so verify them with us directly: Acetic Acid at 60% (PP/PVC, EPDM) and Ozonated Water up to 10 PPM (PVC, EPDM). Note that DEF requires 316SS stainless fittings, not the PVC used on most of the others, so spec the wetted hardware to the chemical and not by habit. Match every fitting and gasket to the material shown for your chemical, and confirm the chemical, concentration, and temperature with us before ordering.
The mistake to avoid: specific gravity
The single most common error on a cone bottom chem tank is putting a heavy chemical in a 1.5-rated shell. Several chemicals are compatible with the polyethylene but require a higher 1.9 specific-gravity tank, not this one: Ethylene Glycol, Ferric Chloride, Ferric Sulfate, Hydrochloric Acid, Hydrofluoric Acid, Hydrofluosilicic Acid, Hydrogen Peroxide, Peracetic Acid, Phosphoric Acid, Polyaluminum Chloride, Potassium Carbonate, Potassium Hydroxide, Propylene Glycol, Sodium Bisulfate, Sodium Bisulfite, Sodium Hypochlorite, Sodium Thiosulfate, Sulfuric Acid, and Zinc Orthophosphate. Several of these also need upgraded sealing and hardware, not the EPDM/PVC suitable for the chemicals above: Hydrochloric, Hydrofluoric, Hydrofluosilicic, Hydrogen Peroxide, Phosphoric, and Sodium Hypochlorite call for Viton gaskets, Peracetic Acid for Aflas, and Sulfuric Acid for CPVC fittings with Viton. If your product is on that list, talk to us before ordering so we point you at the correct shell and sealing package. You can cross-check any of these in the Chemical Compatibility Database.
This tank ships LTL freight from the Chem-Tainer plant in West Babylon, NY, and freight is quoted live to your delivery ZIP, since cone bottom tanks ship on a stand or pallet and the rate depends on distance and accessorials. Get a number in seconds with the Freight Cost Estimator, or call 866-418-1777 and we will confirm fitting layout, the right specific-gravity rating for your chemical, and a freight quote to your ZIP before you buy. For deeper background, see our guides on Chem-Tainer cone-bottom drainage rates, the 100-gallon cone bottom buyer's guide, and tank-top fitting placement strategy for closed-top configurations.
