Sodium Silicate Storage — Na2O.xSiO2 Water-Glass Tank Selection

Storing Sodium Silicate? Start Here

Sodium silicate is a versatile, alkaline liquid used in various industries, from detergents to water treatment. It’s known for its ability to bind, modify cement, and control corrosion. If you’re considering storing sodium silicate, you’ll need a tank that can handle its unique properties, including its high pH and potential to thicken in cold conditions.

Can you store it in a poly tank?

Yes, you can store sodium silicate in poly tanks. High-density polyethylene (HDPE) and cross-linked polyethylene (XLPE) tanks are suitable for this purpose, as they can handle the chemical’s alkaline nature without degradation. However, avoid using tanks made from aluminum or galvanized steel, as these materials will corrode rapidly.

Watch out for viscosity changes

Sodium silicate can become very viscous at low temperatures, making it difficult to pump. If you’re storing it in a colder environment, consider heated storage or diluting the solution to prevent gelling or silica precipitation.

The safety that actually matters

• Always use appropriate personal protective equipment (PPE) when handling.
• Ensure tanks are equipped with proper ventilation to prevent pressure buildup.
• Regularly inspect gaskets and seals, replacing them annually to prevent leaks.

Common questions

What kind of gaskets should I use?

EPDM gaskets are standard for sodium silicate, but always check the manufacturer’s compatibility chart.

Can sodium silicate tanks be used outdoors?

Yes, but ensure they are protected from freezing temperatures to avoid viscosity issues.

How often should I inspect my storage tank?

Conduct visual inspections regularly and a thorough check at least once a year.