The Enduraplas 100 Gallon White Horizontal Sump Bottom Leg Tank ships ready to mount on its integrated frame for transport and field-applicator work. At 41 in wide, 46 in long, and 28 in tall, this 100-gallon horizontal leg tank carries a 1.9 specific gravity rating in natural white polyethylene, so it is built for dense liquids well past the weight of plain water.
Will it handle your load?
Filled with water this tank weighs about 834 lb, and with its 1.9 SG rating it is engineered to carry up to roughly 1,585 lb of contents. That gap of about 751 lb is the density headroom the 1.9 rating buys you, and it is exactly why a 100 gallon horizontal leg tank like this gets specified for fertilizer, brine, and chemical hauling rather than only water: several of the liquids listed below — calcium chloride brine, ferric chloride, sulfuric acid at 98% — are meaningfully denser than water and need that margin. A 1.9 SG rating is already the heaviest-duty density class offered for this size and style, so there is no higher-rated step-up to chase; your real decision is fitting and gasket selection, not a bigger-rated tank. The 41.0 x 46.0 in footprint and 28 in height keep the center of gravity low on a trailer or skid, which matters when a full load shifts in transit. If you are sizing across the range, run the numbers in our Tank Sizing Calculator and the Tank Sizing Guide before you commit.
Chemical compatibility
This tank is molded polyethylene with a 1.9 specific gravity rating. The resin grade is not confirmed in our data, so confirm whether your tank is HDLPE or XLPE with the manufacturer before putting it into chemical service — the distinction changes what it will hold long-term. As a frame-mounted applicator tank it is listed compatible with the high-demand carrier fluids first: DEF at 32.5% (316SS fittings, EPDM gasket) and Urea Solution at 50% (PP/PVC, EPDM). Build the fittings and gaskets to the chemical, not to the tank, and always cross-check against the OEM chemical-resistance chart for your exact concentration and temperature; the values below are concentration-specific and not a substitute for that chart.
From the compatibility data on this tank, the following are listed (with the fitting and gasket materials that suit each): Acetic Acid at 60% (PP/PVC, EPDM); Aluminum Sulfate at 50% (PVC, EPDM); Calcium Chloride at 40% (PVC, EPDM); DEF at 32.5% (316SS, EPDM); Ethylene Glycol at 100% (PVC, EPDM); Ferric Chloride at 50% (PVC, EPDM); Ferric Sulfate at 60% (PVC, EPDM); Ferrous Sulfate at 20% (PVC, EPDM); Hydrochloric Acid at 37% (PVC, Viton); Hydrofluoric Acid at 48% (PP/PVC, Viton); Hydrofluosilicic Acid at 26% (PP/PVC, Viton); Hydrogen Peroxide at 50% (PVC, Viton); Magnesium Chloride at 30% (PVC, EPDM); Peracetic Acid at 30% (316SS, Aflas); Phosphoric Acid at 85% (PVC, Viton); Polyaluminum Chloride (PVC, EPDM); Potassium Carbonate at 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 at 30% (PVC, EPDM); Sodium Hypochlorite at <16.5% (PVC, Viton); Sodium Thiosulfate at 40% (PVC, EPDM); Sulfuric Acid at 98% (CPVC, Viton); Zinc Orthophosphate (PP/316SS, EPDM) via our zinc orthophosphate page; and Ozonated Water up to 10 PPM (PVC, EPDM). For the full picture, start at our chemical compatibility reference.
The mistake to avoid
The error that bites people on a leg tank like this is treating the SG rating as the whole compatibility story. The 1.9 rating means the tank body is built for liquids up to 1.9 times the density of water — but it says nothing about your fittings. Most chemicals above run standard PVC with EPDM gaskets, but watch the outliers: the strong acids (hydrochloric, hydrofluoric, hydrogen peroxide, phosphoric, sodium hypochlorite, sulfuric) need Viton gaskets, sulfuric specifically needs CPVC, DEF and peracetic acid need 316SS metal fittings, and peracetic acid needs an Aflas gasket. Default-ordering EPDM/PVC for one of those is what leaves you with a weeping bulkhead. The sump and outlet location is not specified in our data, so confirm it from the technical drawing on this page or with the manufacturer before you build out plumbing — and confirm the resin grade before any chemical fill.
This tank ships LTL freight from the Enduraplas plant in Neche, ND, quoted live to your ZIP — get your number from the Freight Cost Estimator or call us at 866-418-1777. For applicator and leg-tank context, see our guides on applicator and leg tanks for fertilizer, loaf-style portable utility tanks and DOT classification, and fertilizer-blend tank stratification.
