The Snyder Industries 65 Gallon Plastic Chemical Injection Tank (SKU SII-1031500CITS45) is a white tank molded from high density linear polyethylene to a 1.9 specific gravity rating, the spec that lets it carry dense chemicals other 1.5-rated tanks cannot. It measures 53"H x 45"W x 64"L and arrives factory-fitted with the threaded openings a day-tank or metering-pump skid needs. If you are sizing a chemical injection tank or feed station around a single dosing point, this 65 gallon Snyder is built for exactly that duty.
Will it work for your application
Full of water this tank weighs about 542 lb; at its 1.9 SG rating the maximum rated contents weight is 1,030 lb. That works out to roughly 1.9 times the full-water weight, which confirms the 1.9 ceiling is the contents-weight basis: as long as your chemical's specific gravity lands under 1.9, you are within the rating. Confirm your pad or containment platform is rated for that 1,030 lb loaded figure before you fill it, and check it against the 45 x 64 in footprint line. The fitting layout on the technical drawing on this page includes a 3" NPT, a 2" NPT, and a 6" PE threaded cap; the larger 6" cap is the typical fill, inspection, and level-sensor port, with the 2" and 3" NPT openings serving as the suction, return, or vent connections for a metering-pump skid. Match your plumbing thread to those exact sizes. Use the Tank Sizing Calculator and the Tank Sizing Guide to confirm the 65 gallon working volume fits your dosing rate and refill interval, and review the level gauge selection guide before you spec a sensor for the threaded cap.
Chemical compatibility
This tank is HDLPE rated to 1.9 specific gravity, which covers the heavier chemistries in the list below. Every chemistry listed here is already within this tank's 1.9 rating, so no heavier-rated tank is required for any of them; this 1.9 unit is the top of the relevant range. Compatibility is concentration- and temperature-specific, so always confirm against the OEM chemical-resistance chart for your exact service before committing. The fitting and gasket materials below are the recommended wetted materials for each chemical at the listed concentration.
Verified-compatible chemistries for this resin and SG include: Acetic Acid (60%, PP/PVC fittings, EPDM gaskets), Aluminum Sulfate (50%, PVC, EPDM), Calcium Chloride (40%, PVC, EPDM), DEF (32.5%, 316SS, EPDM), Ethylene Glycol (100%, PVC, EPDM), Ferric Chloride (50%, PVC, EPDM), Ferric Sulfate (60%, PVC, EPDM), Ferrous Sulfate (20%, PVC, EPDM), Hydrochloric Acid (37%, PVC, Viton), Hydrofluoric Acid (48%, PP/PVC, Viton), Hydrofluosilicic Acid (26%, PP/PVC, Viton), Hydrogen Peroxide (50%, PVC, Viton), Magnesium Chloride (30%, PVC, EPDM), Peracetic Acid (30%, 316SS, Aflas), Phosphoric Acid (85%, PVC, Viton), Polyaluminum Chloride (PVC, EPDM), Potassium Carbonate (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 (30%, PVC, EPDM), Sodium Hypochlorite (<16.5%, PVC, Viton), Sodium Thiosulfate (40%, PVC, EPDM), Sulfuric Acid (98%, CPVC, Viton), Urea Solution (50%, PP/PVC, EPDM), Zinc Orthophosphate (PP/316SS, EPDM), and Ozonated Water (up to 10 PPM, PVC, EPDM).
The wetted-material exceptions are where buyers default to the wrong part, so order these deliberately:
- 316SS fittings required: DEF (32.5%) and Zinc Orthophosphate.
- Viton gaskets required: the oxidizers and strong acids - Hydrochloric Acid, Hydrofluoric Acid, Hydrofluosilicic Acid, Hydrogen Peroxide, Phosphoric Acid, Sodium Hypochlorite, and Sulfuric Acid (which also calls for CPVC fittings).
- Specialty elastomer: Peracetic Acid needs 316SS fittings with an Aflas gasket.
Start at the Chemical Compatibility Database to confirm your chemistry, and read the label and signage compliance guide for placarding the filled tank.
The mistake to avoid
Do not down-spec to a 1.5 SG injection tank to save money. This Snyder is rated to 1.9 specific gravity precisely because chemicals like 98% sulfuric acid, 60% ferric sulfate, and 50% ferric chloride are far denser than water; a lighter-rated tank holding the same chemical can deform or fail. Equally, do not reuse leftover PVC fittings on a service the chart above lists as 316SS, CPVC, or Viton, and confirm your downstream sampling and analysis cadence with the chemical sampling protocol guide before the tank goes into service.
This tank ships LTL from Snyder's plant in Marked Tree, Arkansas, with freight quoted live to your ZIP. Get your exact number with the Freight Cost Estimator or call 866-418-1777 to talk through fittings, secondary containment with a Snyder Captor basin, and lead time before you order.
