The Snyder Industries 4100 Gallon HDPE Vertical Chemical Storage Tank in White is a 1.9 specific-gravity vertical storage tank built for demanding bulk chemical service, where most water-rated tanks fall short. It stands 130 inches tall on a 102 x 102-inch footprint and holds a true 4,100 gallons of polyethylene-stored product. The 1.9 SG rating is the number that matters here: it tells you the wall is engineered to hold liquids up to 1.9 times the density of water, which is why this Snyder vertical tank handles heavy acids and concentrated chemistries that would overstress a 1.0 or 1.5 SG container. If you are comparing it against other HDPE storage tanks, this is one of the higher-density-rated units in the standard vertical range.
Will it work for your chemical and your site?
Full of water this HDPE vertical tank carries 34,194 lb; at its maximum rated contents it is engineered for 64,969 lb, so your pad, ring wall, or containment slab has to be designed for that loaded weight before delivery. Plan the fittings around the molded openings shown on the technical drawing on this page: a flange, an 18-inch PE threaded and vented fitting, a manway with 15-inch access, a 12 x 23-inch fitting, and a flat fitting boss for adding your own bulkhead or outlet. Those molded PE locations accept buyer-supplied PVC, CPVC, polypropylene, or 316 stainless fittings with EPDM, Viton, or Aflas gaskets matched to your chemistry. The 15-inch manway access governs whether your level instrumentation and mixer hardware will fit, so confirm it against your equipment before you order. If you are still narrowing capacity, the Tank Sizing Calculator and Tank Sizing Guide help you match volume to your draw rate and turnover.
Chemical compatibility
This is a high-density polyethylene tank rated to 1.9 specific gravity. Our resin record for this unit is not fully resolved, so confirm the exact resin grade with our team before committing it to chemical service - cross-link grade affects long-term resistance. Always verify against the OEM chemical-resistance chart for your exact concentration and operating temperature; the chart is concentration- and temperature-specific, and a chemical that is fine at ambient can behave differently when warm. Based on the compatibility data for this 1.9 SG tank, it is suited to chemistries including Acetic Acid (60%), Aluminum Sulfate (50%), Calcium Chloride (40%), DEF (32.5%), Ethylene Glycol (100%), Ferric Chloride (50%), Ferric Sulfate (60%), Ferrous Sulfate (20%), Hydrochloric Acid (37%), Hydrofluoric Acid (48%), Hydrofluosilicic Acid (26%), Hydrogen Peroxide (50%), Magnesium Chloride (30%), Peracetic Acid (30%), Phosphoric Acid (85%), Polyaluminum Chloride, Potassium Carbonate (50%), Potassium Hydroxide (saturated), Propylene Glycol, Sodium Bisulfate, Sodium Bisulfite, Sodium Carbonate (30%), Sodium Hypochlorite (under 16.5%), Sodium Thiosulfate (40%), Sulfuric Acid (98%), Urea Solution (50%), and Zinc Orthophosphate. Ozonated Water up to 10 PPM is also listed as compatible. Match your fitting and gasket materials to the specific chemical and concentration:
- Sulfuric Acid 98% - CPVC fittings, Viton gaskets
- Hydrochloric Acid 37%, Hydrofluoric Acid 48%, Hydrofluosilicic Acid 26%, Hydrogen Peroxide 50%, Phosphoric Acid 85%, Sodium Hypochlorite under 16.5% - PVC (or PP/PVC) fittings, Viton gaskets
- DEF 32.5% - 316 stainless fittings, EPDM gaskets
- Peracetic Acid 30% - 316 stainless fittings, Aflas gaskets
- Acetic Acid 60%, Aluminum Sulfate 50%, Calcium Chloride 40%, Ethylene Glycol 100%, Ferric Chloride 50%, Ferric/Ferrous Sulfate, Magnesium Chloride 30%, Polyaluminum Chloride, Potassium Carbonate/Hydroxide, Propylene Glycol, Sodium Bisulfate/Bisulfite/Carbonate/Thiosulfate, Urea Solution 50%, Zinc Orthophosphate, Ozonated Water - PVC, PP, or 316SS fittings, EPDM gaskets
See the full Chemical Compatibility Database for the per-chemical detail and the OEM chart citation.
Instrumentation, labeling, and sampling
A 4,100-gallon chemical tank is a permanent process asset, so set it up right from day one. For level monitoring, our guide to tank level gauge selection for chemical service walks through radar, ultrasonic, hydrostatic, and magnetostrictive options against the 15-inch manway access. Before commissioning, review tank label and signage compliance for NFPA 704, GHS, and OSHA HazCom placement, and build a routine around our chemical sampling protocol so your lab results reflect what is actually in the tank. If you are evaluating secondary containment, our Snyder Captor Plus 110% containment vs UL-142 comparison covers how to meet SPCC requirements.
The mistake to avoid
The costliest error on a tank this size is matching the SG rating to water density instead of your chemical. At 1.9 SG this Snyder vertical tank is rated for heavy liquids, but if you under-spec the gasket or fitting material - running EPDM where a chemistry needs Viton, for instance - you will get a leak at the fitting long before the wall ever fails. Confirm both the resin grade and every gasket/fitting pairing against the OEM chart for your specific concentration and temperature before you order.
This vertical storage tank ships LTL freight from the Snyder plant in Philippi, West Virginia, quoted live to your ZIP code - get an exact number with our Freight Cost Estimator or call 866-418-1777. Because the loaded weight is substantial, plan your offloading equipment and foundation in advance. Have questions about fittings, resin grade, or chemical service for this 4100 gallon HDPE vertical storage tank? Our team is ready to help.
