The Chem-Tainer 85 Gallon Plastic Horizontal Leg Tank (SKU TC3055LC) is a self-supporting natural white polyethylene tank for haul-and-store duty where the contents have to sit level on a trailer, skid, or truck bed and not roll. It measures 58 inches long, 30 inches wide, and 30 inches tall with a 30.0 x 58.0 inch footprint, carrying 85 gallons in a low, stable profile. The molded-in legs are why operators searching for a horizontal tank, leg tank, or horizontal leg tank keep coming back to this Chem-Tainer body: it stands on its own without a separate cradle. One important freight note up front — this tank is molded in and ships from Keaau, Hawaii, so mainland buyers should price freight before committing (more on that below).
Will it work for your job?
Weight decides your mount and your hauling setup. Filled with plain water this tank runs about 709 lbs; loaded to its full 1.5 specific-gravity rating it reaches roughly 1,063 lbs of contents. Build the trailer deck, strapping, and tongue load around that 1,063 lb figure, not the water number, so you have margin for a dense liquid. The 1.5 SG rating means the wall thickness is set for liquids up to 1.5 times the weight of water. One thing to be clear on: 85 gallons is the volume ceiling at any density up to 1.5 SG — the tank does not hold more than 85 gallons regardless of the liquid, so if a denser chemical pushes you over the weight rating you derate the fill, you do not gain volume. If you are sizing a fleet or matching tank to load, the Tank Sizing Calculator and Tank Sizing Guide help you check capacity against axle and deck limits before you buy. Standard fitting and port configuration is not published in our data — see the technical drawing on this page for layout, and confirm bulkhead/outlet size and count at 866-418-1777 before ordering.
Chemical compatibility
This is a polyethylene tank rated to 1.5 specific gravity. Before any chemical service, confirm the resin: our data records it as HDLPE with a question mark, so verify HDLPE versus XLPE (cross-linked) with us at 866-418-1777 — the two resins do not handle the same chemistries, and the difference matters for warranty and safety. With the resin confirmed, always verify your exact chemical, concentration, and temperature against Chem-Tainer's chemical-resistance chart, which is concentration- and temperature-specific. At the 1.5 SG rating, this tank is suited to the following at the listed concentrations, with the noted fitting and gasket materials:
- Acetic Acid at 60% — PP/PVC fittings, EPDM gaskets
- Aluminum Sulfate at 50% — PVC fittings, EPDM gaskets
- Calcium Chloride at 40% — PVC fittings, EPDM gaskets
- DEF at 32.5% — 316SS fittings, EPDM gaskets
- Ferrous Sulfate at 20% — PVC fittings, EPDM gaskets
- Magnesium Chloride at 30% — PVC fittings, EPDM gaskets
- Sodium Carbonate at 30% — PVC fittings, EPDM gaskets
- Urea Solution at 50% — PP/PVC fittings, EPDM gaskets
- Ozonated Water up to 10 PPM — PVC fittings, EPDM gaskets
For DEF specifically, note the 316 stainless fitting requirement at 32.5% — the fitting metallurgy is not optional for that service. Cross-check any application against our full chemical compatibility resource.
The mistake to avoid: putting a 1.9 SG chemical in a 1.5 SG tank
The most common error on a tank like this is loading a heavier-than-1.5-SG chemical into a 1.5-rated body. Several chemistries people try to store here require a 1.9 specific-gravity tank — a different SKU, not this one. Note the gasket split first: Sodium Hypochlorite, Hydrochloric Acid, Hydrofluoric Acid, Hydrofluosilicic Acid, Hydrogen Peroxide, Phosphoric Acid, and Sulfuric Acid need Viton gaskets, and Peracetic Acid needs Aflas — not EPDM. The rest of the 1.9 SG list includes Ethylene Glycol, Ferric Chloride, Ferric Sulfate, Polyaluminum Chloride, Potassium Carbonate, Potassium Hydroxide, Propylene Glycol, Sodium Bisulfate, Sodium Bisulfite, Sodium Thiosulfate, and Zinc Orthophosphate. If your application is on this list, this 1.5 SG tank is the wrong body — call us at 866-418-1777 and we will match you to the correct 1.9 SG version and the right gasket package.
This tank ships LTL freight, quoted live to your ZIP, from the Chem-Tainer plant in Keaau, HI. Because it is molded in Hawaii, mainland freight is a real cost factor, so get a number before you commit by running the Freight Cost Estimator, or call 866-418-1777 and we will quote it and confirm the resin, SG, and fitting package for your exact chemical. For ag haul applications, our guide to applicator and leg tanks for fertilizer and the deep-dive on fertilizer-blend stratification are worth a read before you load.
