Sulfuric Acid Storage

Where Can I Store It?

• Carbon Steel Storage Tank
  • Steel tanks are most effective at storing high-end, concentrated sulfuric acid solutions of 93% wt. and above.
  • 77% H2SO4 is usually regarded as the practical lower limit at which sulfuric acid can be stored at ambient temperatures in unprotected carbon steel tanks.
  • Lifespan will vary based on the thickness of the tank with the average metal loss per year being 5 to 20 mms per year of storage.
• HDPE (High-Density Polyethylene)
  • The most common solution for storing sulfuric acid due to its non-reactive nature.
  • Can contain concentrated sulfuric acid for long periods of time with little degradation of the tank.
  • Tank specific gravity must be equal to or greater than 1.9 to ensure the tank can withstand the weight of the chemical.
• LDPE (Low-Density Polyethylene)
  • Non-reactive with sulfuric acid
  • Concentrated sulfuric acid will start to wear LDPE down. Recommended 75% maximum concentration.
  • Tank specific gravity must be equal to or greater than 1.9 to ensure the tank can withstand the weight of the chemical.
• XLPE (Cross-Linked Polyethylene)
  
  • XLPE is compatible with sulfuric acid solutions up to a concentration of 98% and a specific gravity of 1.84

*Please be aware that diluting sulfuric acid generates heat and it is not recommended to perform dilution in polyethylene tanks. If you are using a polyethylene tank and need dilute sulfuric acid, we would recommend purchasing it pre-diluted. Carbon Steel Tanks will react with Sulfuric Acid and produce corrosion. This reactivity can also produce hydrogen gas and iron sulfide. Regular maintenance of the tank will need to be performed. Secondary Storage is required for all chemical storage tanks.