Cupric Chloride Storage — CuCl2 PCB Etchant + Specialty Tank Selection

Storing Cupric Chloride? Start Here

Cupric chloride is a versatile chemical used in PCB etching, wood preservation, and as a catalyst. If you're planning to store this solution, it's crucial to understand its corrosive nature, especially when mixed with hydrochloric acid. This combination can be quite aggressive, so choosing the right storage tank is essential to prevent damage and ensure safety.

Can you store it in a poly tank?

Yes, you can store cupric chloride in a polyethylene (poly) tank. High-density polyethylene (HDPE) or cross-linked polyethylene (XLPE) tanks are standard for this purpose, as they resist the corrosive effects of both the chloride and the acid at ambient temperatures.

Key Issue: Corrosion Risks

Cupric chloride's corrosive nature can lead to material degradation. It's important to avoid using carbon steel, galvanized steel, aluminum, or copper-based alloys for any part of the storage system, as these materials will corrode. Stick with HDPE tanks and compatible fittings to ensure longevity and safety.

The safety that actually matters

• Always wear appropriate personal protective equipment (PPE) when handling cupric chloride.
• Install emergency eyewash stations near storage and handling areas.
• Ensure proper ventilation to manage any fumes.
• Regularly inspect tanks and fittings for signs of wear or damage.

Common questions

What type of gaskets should I use?

EPDM gaskets are standard for cupric chloride storage, but always check the manufacturer's compatibility chart.

Can I use stainless steel for piping?

Stainless steel is not recommended due to the risk of pitting and corrosion. Stick to polypropylene or PVDF for piping.

What if my tank is exposed to high temperatures?

Consider using premium materials like Hastelloy C-276 or titanium for components exposed to elevated temperatures.