S-Metolachlor Preemergence Herbicide Tank Selection

Storing Metolachlor? Start Here

Metolachlor and its variant S-metolachlor are widely used herbicides in agriculture, particularly for corn, soybeans, and other row crops. They help control annual grasses and small-seeded broadleaves, making them essential for effective weed management. If you're involved in agriculture at any level, from a farmer to a custom applicator, understanding how to store these chemicals safely is crucial.

Can you store it in a poly tank?

Yes, you can store metolachlor in a polyethylene (poly) tank. High-density polyethylene (HDPE) and cross-linked polyethylene (XLPE) tanks are both suitable for this purpose. They're commonly used in ag-retail and cooperative settings due to their compatibility with the herbicide's formulation. However, ensure the tank is UV-stabilized if placed outdoors.

Key Issue: Solvent Compatibility

The aromatic petroleum solvent in metolachlor formulations can affect certain materials. While HDPE and XLPE tanks handle it well, choosing the right gaskets and seals is crucial. Avoid EPDM and polyurethane, as they can swell or degrade. Instead, opt for Viton or PTFE gaskets to ensure long-term reliability.

The safety that actually matters

• Use UV-stabilized tanks for outdoor storage to prevent degradation.
• Match gaskets and seals to the manufacturer's compatibility chart.
• Ensure proper ventilation to manage any potential fumes.

Common questions

Can I use a regular plastic tank for metolachlor?

Yes, but it should be HDPE or XLPE to ensure compatibility with the solvent.

What gasket material is best for metolachlor?

Viton or PTFE gaskets are recommended due to their resistance to the solvent.

Do I need to worry about UV exposure?

If your tank is stored outdoors, use a UV-stabilized tank to prevent damage.