Sodium Lauryl Ether Sulfate Storage — SLES Anionic Surfactant Tank Selection

Storing Sodium Lauryl Ether Sulfate? Start Here

Sodium lauryl ether sulfate (SLES) is a key ingredient in many personal care products like shampoos, body washes, and dishwashing liquids. It's known for its ability to create a rich lather and is less irritating to the skin compared to similar compounds. For industrial use, SLES is often stored as a 27-30% aqueous solution or a 70% paste, depending on the formulation needs. Proper storage is crucial to maintain its quality and effectiveness.

Can you store it in a poly tank?

Yes, SLES can be stored in polyethylene tanks. Both HDPE and XLPE are suitable for storing SLES solutions and pastes. For the 27-30% solution, HDPE rotomolded tanks are recommended, while the 70% paste may require heated tanks to maintain pumpability.

Key Issue: Temperature Control

Maintaining the right storage temperature is essential for SLES. For the 27-30% solution, keep it between 20-40°C to ensure it remains pumpable and to minimize the formation of unwanted by-products like 1,4-dioxane. The 70% paste form needs a heated environment, typically between 35-45°C, to facilitate handling and use.

The safety that actually matters

• Ensure tanks are properly ventilated to avoid pressure build-up.
• Use EPDM gaskets for standard applications; Viton for high-purity needs.
• Regularly inspect tanks and fittings for signs of wear or damage.

Common questions

Can SLES be stored in stainless steel tanks?

Yes, 316L stainless steel is ideal for high-purity applications, while 304 stainless is suitable for general use.

What type of fittings should be used?

Polypropylene fittings are standard, providing good compatibility with SLES.

Is temperature monitoring necessary?

Yes, especially for the 70% paste form, to ensure it remains pumpable and effective.