Sodium Diethyl Dithiocarbamate (SDDC) Storage — Polymetallic Sulfide Flotation + Heavy-Metal Wastewater Treatment

Storing Sodium Diethyl Dithiocarbamate? Start Here

Sodium Diethyl Dithiocarbamate (SDDC) is widely used in mining and wastewater treatment. It's a selective collector for sulfide flotation and a heavy-metal treatment agent. If you're dealing with this chemical, it typically comes as a white to pale-yellow crystalline solid or flake. It's highly soluble in water and works well in various industrial applications, including rubber vulcanization and analytical chemistry.

Can you store it in a poly tank?

Yes, you can store SDDC in a poly tank. Both HDPE and XLPE are suitable for storing its aqueous solution, which is mildly basic. These materials are standard for solution makedown and day-tank storage, with a specific gravity of around 1.05-1.10 g/cm³.

Key Issue: Decomposition Concerns

When storing SDDC, be aware that its aqueous solution can decompose at temperatures above 50-60°C, releasing dimethylamine and carbon disulfide. This can lead to sulfur-containing degradation products, so maintaining a stable, cool environment is crucial.

The safety that actually matters

• Use UV-protected tanks for outdoor storage to prevent degradation.
• Ensure proper ventilation to manage any off-gassing from decomposition.
• Regularly inspect tanks for signs of corrosion or damage.

Common questions

What gasket material should I use?

EPDM is the standard choice for gaskets, but you can use Viton for severe-service applications.

Can I use aluminum tanks?

No, aluminum is not suitable due to alkali attack. Stick with HDPE or stainless steel.

How should I handle the dry product?

Store it in a cool, dry place and use a dust-collection system when handling to prevent inhalation.