The Chem-Tainer 200 Gallon Heavy Duty Horizontal Leg Tank (SKU TC3845LA) is a Merced, California-built polyethylene horizontal leg tank rated to a 1.9 specific gravity. That rating is the reason to look at this tank: a 200 gallon horizontal tank holding water tops out around 1,668 lb, but the 1.9 SG wall lets you run dense liquids up to roughly 3,169 lb of rated contents without overstressing the shell. The Natural White body lets you read your fluid level by eye. It measures 42 in tall, 37 in wide and 49.5 in long, with a 37.0 x 49.5 in footprint that drops into a skid, sprayer rack, or pickup bed.
Will it work for your application
This is a horizontal leg tank: the molded legs and low center of gravity keep it stable in motion, which is why it is reached for as a 200 gallon horizontal tank for mobile transfer, nurse-rig, and applicator duty. Use the 1.9 SG rating as your design ceiling. Water at 8.34 lb/gal is well inside that envelope; heavier solutions are where the 1.9 wall earns its keep. To confirm a dense liquid stays within the tank's structural limit, run your fill volume and product weight through the Tank Sizing Calculator, and see the Tank Sizing Guide for how SG and contents weight set the real ceiling. Fitting and outlet configuration is not documented in our spec record for this leg tank, so confirm port size, count, and placement with us at 866-418-1777 before you plumb it, and review the technical drawing on this page alongside that conversation.
Chemical compatibility
This is a polyethylene tank on a 1.9 specific-gravity wall. Confirm the exact resin family (HDLPE versus XLPE) with us before chemical service, since the resin family changes what you can safely store. Compatibility is always concentration- and temperature-specific: check each chemical against the Chem-Tainer chemical-resistance chart at your exact concentration and operating temperature, and match fittings and gaskets to the fluid, not just the tank.
The pairings that bite people who default to PVC and EPDM are the metal and exotic-seal services in this data. DEF (32.5%) and peracetic acid (30%) both require 316SS fittings, and peracetic acid needs Aflas gaskets rather than Viton or EPDM. Sulfuric acid at 98% requires CPVC, not standard PVC. Spec those three correctly or the fittings fail before the tank does.
Other commonly run fluids and their recommended fitting and gasket pairings include hydrochloric acid (37%, PVC, Viton), phosphoric acid (85%, PVC, Viton), sodium hypochlorite (under 16.5%, PVC, Viton), hydrogen peroxide (50%, PVC, Viton), ferric chloride (50%, PVC, EPDM), aluminum sulfate (50%, PVC, EPDM), calcium chloride (40%, PVC, EPDM), and ethylene glycol (100%, PVC, EPDM). The tank's range also covers acetic acid (60%), hydrofluoric acid (48%), hydrofluosilicic acid (26%), ferric sulfate (60%), ferrous sulfate (20%), magnesium chloride (30%), potassium carbonate (50%), potassium hydroxide (saturated), sodium carbonate (30%), sodium thiosulfate (40%), propylene glycol, polyaluminum chloride, sodium bisulfate, sodium bisulfite, urea solution (50%), zinc orthophosphate, and ozonated water (up to 10 PPM, PVC, EPDM). Start at the chemical compatibility reference to verify your fluid before ordering.
The mistake to avoid
The common error on a 1.9 SG tank is treating the 200 gallon capacity as the limit and ignoring weight. At 1.9 SG your full load can reach about 3,169 lb of contents, and the tank, skid, and trailer all have to carry that. Size the dense fill by weight, not by gallons. The second mistake is plumbing first and confirming resin later: pin down HDLPE versus XLPE and the correct fitting and gasket materials above before you cut a single port.
This tank ships LTL freight from a single plant in Merced, CA, quoted live to your ZIP code, so East and Midwest buyers should pull a real number before assuming a rate. Get a quote for your delivery address with the Freight Cost Estimator, or call us at 866-418-1777 to confirm fittings, verify the resin for your chemical, and book delivery.
