The Chemtainer 125 Gallon 15 Degree Vertical Cone Bottom Tank (SKU TC4235AP) is a closed-top polyethylene cone-bottom tank on a matching poly stand, built for batching and full-drain dispensing where the contents need to empty completely through the cone instead of pooling on a flat floor. It holds 125 gallons, weighs 125 lb empty, sits on a 42-inch diameter footprint, and carries an 8-inch lid for filling and access. The 15-degree cone moves liquid and light settled solids toward the outlet, which is why operators searching for a 125 gallon Chemtainer vertical cone bottom stand tank land on this configuration for chemical mixing, day-tank, and metering-feed duty.
Will it work for your job
The tank body carries a listed height of 35 inches; because it sits on a poly stand, confirm the overall standing height on the stand from the technical drawing on this page or by phone before you set your plumbing, since the pack does not carry an overall-with-stand dimension. The tank is rated to a 2.0 specific gravity, so the wall thickness supports dense chemical contents, not just water. Water at full volume weighs about 1,042 lb; at the maximum rated 2.0 SG, contents can reach roughly 2,085 lb, and the poly stand plus your anchoring have to carry that load. Size your pad and stand accordingly using our Tank Sizing Calculator and Tank Sizing Guide before you commit. For a fuller walkthrough of this exact configuration, see our 125 Gallon 15 Degree Cone Bottom Tank with Poly Stand buyer's guide. Note that the outlet size and pre-installed fittings for this SKU are not listed in the spec set, so confirm the bulkhead/outlet configuration by phone before you order any chemical hardware.
Chemical compatibility
Before any chemical order, confirm the resin: it is recorded as HDLPE with a pending confirmation, and because crosslinked XLPE cannot be re-welded and behaves differently in chemical service, verify HDLPE versus XLPE with us for your exact chemical, concentration, and temperature. Compatibility below is drawn from the Snyder Industries OEM chemical-resistance chart and is concentration- and temperature-specific. One genuine advantage of this SKU: rated to 2.0 SG, it meets or exceeds the specific-gravity requirement for every chemical listed, with margin above the highest requirement (1.9) in the set.
Chemicals this tank at its 2.0 SG rating can carry, with the fitting and gasket materials the chart calls for, include acetic acid (60%, PP/PVC fittings, EPDM gaskets), aluminum sulfate (50%, PVC, EPDM), calcium chloride (40%, PVC, EPDM), DEF (32.5%, 316SS, 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). Match your fitting and gasket to the chart entry for your chemical, and browse the full Chemical Compatibility Database to confirm.
The mistake to avoid
The costly error on a chemical cone-bottom tank is matching the tank body but ignoring the fitting and gasket. Several chemicals here demand Viton gaskets (hydrochloric, phosphoric, sulfuric, hydrogen peroxide, sodium hypochlorite) rather than the default EPDM, and a few require 316 stainless or CPVC hardware — DEF, a common day-tank use for this size, calls for 316SS fittings, not the default PVC. An EPDM gasket on a Viton-service chemical fails at the seal even though the polyethylene wall is fine. Confirm resin (HDLPE vs XLPE), specific-gravity headroom, and the exact fitting and gasket for your chemical before you order.
This tank ships LTL freight from the nearest of our stocking plants (Florida or West Babylon, NY), quoted live to your ZIP through the Freight Cost Estimator. For help confirming chemical service, resin, or the right fittings for your application, call 866-418-1777 and see the technical drawing on this page for dimensional detail.
