Polyethyleneimine Storage — PEI Tank Selection for Paper, Water Treatment, CO2 Capture

Storing Polyethyleneimine? Start Here

Polyethyleneimine (PEI) is a versatile chemical used in paper wet-strength, water treatment, and more. If you're considering storing PEI, it's crucial to know that it comes in two forms: a thick, water-free liquid and a water-based solution. Both forms are alkaline, meaning they can corrode certain metals like copper and aluminum. When storing PEI, choosing the right tank material is essential to prevent damage and ensure safety.

Can you store it in a poly tank?

Yes, you can store PEI in a polyethylene (HDPE) tank. HDPE is a standard choice for PEI storage, as it handles the chemical's alkalinity well. However, avoid using metals like copper, zinc, or aluminum, which PEI can corrode.

Watch out for metal corrosion

PEI's alkalinity can lead to corrosion of metals such as copper and aluminum. Always ensure that the tank and any fittings or gaskets are made from compatible materials like HDPE or stainless steel to avoid damage.

The safety that actually matters

• Use HDPE or stainless steel tanks to avoid corrosion.
• Ensure proper ventilation to manage any fumes.
• Match gaskets to the manufacturer chart to prevent leaks.

Common questions

Can PEI be stored in a metal tank?

Only if it's made of stainless steel. Avoid copper, zinc, and aluminum due to corrosion risks.

What gasket materials are suitable for PEI?

EPDM is generally recommended, but always check the manufacturer chart for compatibility.

Is special handling required for PEI?

Yes, ensure proper ventilation and avoid contact with incompatible metals.