Zinc Chloride Storage — ZnCl2 Galvanizing-Flux Tank Selection

Storing Zinc Chloride? Start Here

Zinc chloride is a versatile chemical used in galvanizing, etching, and as an electrolyte. It often comes as a 50% aqueous solution or a dry powder. The solution is acidic, which means it can be corrosive to certain materials. If you're planning to store zinc chloride, understanding the right tank material is crucial for safety and longevity.

Can you store it in a poly tank?

Yes, polyethylene tanks are suitable for storing zinc chloride solutions. Polyethylene resists the corrosive nature of zinc chloride, making it a reliable choice for concentrations up to 50%. Ensure the tank is designed for chemical storage and has the right specific gravity rating.

Watch out for freezing

Zinc chloride solutions can crystallize and freeze at temperatures below 15°F. If you're in a cold climate, consider using tanks with heat tracing and insulation to prevent freezing and maintain the solution's usability.

The safety that actually matters

• Use appropriate personal protective equipment (PPE) when handling zinc chloride.
• Ensure tanks are ventilated to avoid respiratory irritation from fumes.
• Regularly inspect tanks and gaskets for signs of wear or damage.

Common questions

What type of gaskets should I use?

Match gaskets to the manufacturer's compatibility chart, but EPDM is commonly used for zinc chloride.

Can zinc chloride damage my tank?

Not if you use a compatible material like polyethylene and maintain it properly.

What happens if the solution freezes?

If it freezes, the solution can crystallize, potentially damaging the tank. Use heat tracing in cold environments.