The Chem-Tainer 500 Gallon Heavy Duty Cone Bottom Tank (SKU TC6568JA) is built for full-drain chemical and process service where you cannot leave a residual heel sitting in the bottom. It holds a nominal 500 gallons of natural white polyethylene, stands 68 in tall on a 65 x 65 in footprint, and carries a 1.9 specific gravity rating - the heavy-duty wall that lets this tank hold dense chemistries, not just water. The 1.9 SG rating is the heaviest wall offered in this 500-gallon cone configuration; there is no denser-rated step up in this size. Review the full specifications below before you order.
Will it work for your application?
The 1.9 SG rating is the number that matters most on a cone bottom tank like this one. It means the wall is engineered to carry contents up to 1.9 times the weight of water. Filled with plain water this 500-gallon tank carries about 4,170 lb; at its maximum rated 1.9 SG it is engineered for up to roughly 7,923 lb of contents. Plan your stand or skid and your floor loading around the 7,923 lb figure if you are storing a dense chemical, not the water weight. Because this is a cone bottom design, it must be supported on a matching stand so the entire conical floor drains to the outlet - it cannot sit flat on a slab. Factory outlet size and fitting locations are not published in our data, so confirm the bottom outlet and any side ports with the manufacturer before ordering. Use the Tank Sizing Calculator and the Tank Sizing Guide to confirm the 500-gallon working volume fits your batch and drain-down needs.
Chemical compatibility
This is a polyethylene tank with a 1.9 specific-gravity rating, the heavy-duty grade. The resin is identified as HDLPE but is not yet confirmed - crosslinked polyethylene (XLPE) and linear (HDLPE) handle aggressive oxidizers very differently, so confirm the grade with the manufacturer before committing this tank to sulfuric acid 98%, peracetic acid, or sodium hypochlorite service in particular. Match your fittings and gaskets to the chemical; the wall material is only half of a leak-free, chemically-sound connection. The chemicals below are referenced on the Chem-Tainer chemical-resistance chart for this resin, with the recommended fitting and gasket materials. Entries without a concentration are listed that way on the source chart - always verify against the OEM chart at your specific concentration and operating temperature, since both shift compatibility:
- Acetic Acid (60%) - PP/PVC fittings, EPDM gasket
- Aluminum Sulfate (50%) - PVC fittings, EPDM gasket
- Calcium Chloride (40%) - PVC fittings, EPDM gasket
- DEF (diesel exhaust fluid) (32.5%) - 316SS fittings, EPDM gasket
- Ethylene Glycol (100%) - PVC fittings, EPDM gasket
- Ferric Chloride (50%) - PVC fittings, EPDM gasket
- Ferric Sulfate (60%) - PVC fittings, EPDM gasket
- Ferrous Sulfate (20%) - PVC fittings, EPDM gasket
- Hydrochloric Acid (37%) - PVC fittings, Viton gasket
- Hydrofluoric Acid (48%) - PP/PVC fittings, Viton gasket
- Hydrofluosilicic Acid (26%) - PP/PVC fittings, Viton gasket
- Hydrogen Peroxide (50%) - PVC fittings, Viton gasket
- Magnesium Chloride (30%) - PVC fittings, EPDM gasket
- Peracetic Acid (30%) - 316SS fittings, Aflas gasket
- Phosphoric Acid (85%) - PVC fittings, Viton gasket
- Polyaluminum Chloride - PVC fittings, EPDM gasket
- Potassium Carbonate (50%) - PVC fittings, EPDM gasket
- Potassium Hydroxide (saturated) - PVC fittings, EPDM gasket
- Propylene Glycol - PP/316SS fittings, EPDM gasket
- Sodium Bisulfate - PVC/PP fittings, EPDM gasket
- Sodium Bisulfite - PVC/PP fittings, EPDM gasket
- Sodium Carbonate (30%) - PVC fittings, EPDM gasket
- Sodium Hypochlorite (under 16.5%) - PVC fittings, Viton gasket
- Sodium Thiosulfate (40%) - PVC fittings, EPDM gasket
- Sulfuric Acid (98%) - CPVC fittings, Viton gasket
- Urea Solution (50%) - PP/PVC fittings, EPDM gasket
- Zinc Orthophosphate - PP/316SS fittings, EPDM gasket
- Ozonated Water (up to 10 PPM) - PVC fittings, EPDM gasket
For full data, concentration ranges, and chemicals not listed here, see our Chemical Compatibility Database.
The mistake to avoid
The most common cone bottom error is treating the 1.9 SG rating as optional. A 500-gallon batch of sulfuric acid, ferric chloride, or any dense chemical weighs far more than 4,170 lb of water - this tank's 7,923 lb maximum rated contents weight is what makes those chemistries safe, but only if your stand and connections are rated to match. The second mistake is mismatching gaskets and fittings: aggressive oxidizers like hydrogen peroxide and sodium hypochlorite call for Viton, sulfuric acid 98% calls for CPVC, and DEF needs 316SS metal fittings - not PVC. The easiest call to miss is peracetic acid, the only service here that requires an Aflas gasket on 316SS fittings; EPDM will not hold up to it. If you are weighing this against a 30-degree versus 45-degree cone for drainage and solids handling, read our 30 vs 45 cone-bottom comparison and the 500 gallon 30 degree and 500 gallon 45 degree buyer's guides, plus the poly stand guide.
This 500 gallon cone tank ships LTL freight from Hummelstown, PA, with the cost quoted live to your ZIP code - get your number with our Freight Cost Estimator or call 866-418-1777 and we will quote it for you. Confirm your resin grade, bottom outlet, and gasket selection before you order, and our team will help you spec the right cone bottom tank for your chemistry.
