Sodium Tungstate Storage — Cooling Inhibitor Tank Selection

Storing Sodium Tungstate? Start Here

Sodium tungstate is a versatile chemical used in various industries, from cooling-system corrosion inhibitors to tungsten production. It’s a white crystalline solid that dissolves well in water, forming a mildly alkaline solution. This makes it a popular choice for applications that require a stable, non-corrosive chemical. If you're considering storage options for sodium tungstate, understanding its compatibility with different materials is key to ensuring safety and efficiency.

Can you store it in a poly tank?

Yes, sodium tungstate solutions can be safely stored in polyethylene (poly) tanks. Both HDPE and XLPE are suitable for all working concentrations of sodium tungstate solutions. These materials handle the mildly alkaline nature of the solution without any issues, making them a standard choice for storage.

Key Issue: Material Compatibility

While sodium tungstate is generally non-aggressive, choosing the right materials for storage and handling is crucial. HDPE tanks with polypropylene fittings and EPDM gaskets are recommended. These materials provide durability and ensure that the purity of the sodium tungstate is maintained, which is particularly important for high-purity applications.

The safety that actually matters

• Ensure tanks and fittings are made from compatible materials like HDPE and polypropylene.
• Use EPDM gaskets for standard solution service.
• Regularly inspect storage systems to prevent leaks and maintain chemical purity.

Common questions

Is sodium tungstate corrosive?

No, it is mildly alkaline and not corrosive to most materials, including plastics and metals.

What materials should be avoided?

Avoid using aluminum for primary contact as it can corrode over time in alkaline conditions.

Can sodium tungstate be stored in carbon steel tanks?

Yes, carbon steel is acceptable for cost-driven installations as the mild alkalinity is passivating.