SPM (Sulfuric-Peroxide Mix) Piranha Solution Storage

Storing SPM Piranha Solution? Start Here

SPM Piranha Solution, a mix of sulfuric acid and hydrogen peroxide, is a powerful cleaning agent used in semiconductor and electronics manufacturing. It's not stored in bulk due to its instability over time, but its components are stored separately and mixed as needed. Understanding the storage requirements for these components is crucial to maintaining safety and effectiveness in your operations.

Can you store it in a poly tank?

No, SPM Piranha Solution itself cannot be stored in a poly tank due to its reactive nature. However, hydrogen peroxide, one of its components, is compatible with HDPE tanks. Sulfuric acid requires more specialized storage solutions, such as PVDF-lined or specialty HDPE tanks.

Handling Component Storage

The key issue with SPM Piranha Solution is not storing the mixed solution, but rather storing its components safely. Hydrogen peroxide can be stored in standard HDPE tanks, while sulfuric acid requires specialty materials due to its corrosive nature.

The safety that actually matters

• Always store components separately to prevent premature reaction.
• Ensure proper ventilation and pressure relief for hydrogen peroxide storage.
• Use specialized materials for sulfuric acid to prevent corrosion.

Common questions

Can I store mixed SPM in a tank?

No, it should be mixed just before use and not stored.

What type of tank is suitable for hydrogen peroxide?

HDPE tanks are suitable for storing hydrogen peroxide.

How should sulfuric acid be stored?

Use PVDF-lined or specialty HDPE tanks for sulfuric acid.