Mancozeb Storage — EBDC Fungicide Tank Selection (Dithane, Manzate, Penncozeb)

Storing Mancozeb? Start Here

Mancozeb is a widely used fungicide, especially in agriculture, to protect crops like potatoes, vegetables, fruits, and ornamentals from various fungal diseases. It's available in different forms, such as wettable powders, water-dispersible granules, and flowable concentrates. If you're handling the flowable concentrate, it's crucial to store it properly to maintain its effectiveness and prevent degradation into less desirable compounds.

Can you store it in a poly tank?

Yes, you can store mancozeb flowable concentrate in a polyethylene tank. High-density polyethylene (HDPE) tanks are standard for this purpose, and they should be equipped with polypropylene fittings and EPDM gaskets for optimal compatibility. Avoid using copper or brass fittings, as mancozeb can react with them, leading to contamination and product degradation.

Watch out for degradation

Mancozeb flowable concentrate is sensitive to hydrolysis, meaning it can break down over time when stored in water. This degradation can lead to the formation of ethylenethiourea (ETU), a compound of regulatory concern. To minimize this, store mancozeb in opaque containers, maintain a controlled temperature, and ensure a quick turnover cycle.

The safety that actually matters

• Use carbon-black-stabilized HDPE for outdoor storage to protect against UV damage.
• Ensure fittings and gaskets are compatible to avoid leaks and contamination.
• Keep storage areas well-ventilated and away from incompatible materials.

Common questions

Can I store mancozeb in any plastic tank?

No, only use tanks made of compatible materials like HDPE with the right fittings and gaskets.

Why avoid copper or brass fittings?

Mancozeb can react with copper, causing contamination and reducing the product's effectiveness.

How should I manage storage to prevent degradation?

Store in opaque containers, control the temperature, and use the product quickly to limit breakdown.