Lithium Bromide Storage — LiBr Absorption-Chiller Tank Selection

Storing Lithium Bromide? Start Here

Lithium bromide is a highly hygroscopic substance, meaning it loves to absorb moisture from the air. It’s most commonly used in a 50-55% aqueous solution form, which makes it easier to handle than its dry form. This solution is often used in absorption chillers and other specialty chemical applications. If you're storing lithium bromide, you need a tank that can handle its unique properties and ensure a long service life.

Can you store it in a poly tank?

Yes, you can store lithium bromide solutions in polyethylene tanks, but with some considerations. High-density polyethylene (HDPE) and cross-linked polyethylene (XLPE) are suitable for ambient temperatures. For elevated temperatures, polypropylene or PVDF is preferred. Always ensure the tank is rated for the specific gravity of the solution.

Key Issue: Moisture Sensitivity

Lithium bromide is extremely sensitive to moisture, which can affect its performance. It’s crucial to keep the storage environment dry and the tank sealed to prevent moisture ingress, especially if the solution is being stored for extended periods.

The safety that actually matters

• Ensure tanks are sealed to prevent moisture ingress.
• Use appropriate gaskets—match them to the manufacturer’s compatibility chart.
• Regularly inspect tanks for signs of corrosion or leaks.

Common questions

Can lithium bromide be stored in stainless steel tanks?

Only if the stainless steel is treated with a corrosion inhibitor. Otherwise, bromide ions can cause pitting.

What happens if lithium bromide absorbs moisture?

It can become diluted, which may affect its effectiveness in applications like absorption chillers.

Do I need special permits to store lithium bromide?

Check local regulations, as requirements can vary. Generally, it’s important to follow standard chemical storage protocols.