PFBS Storage — Perfluorobutanesulfonic Acid + Salt Tank Selection

Storing PFBS? Start Here

PFBS, or perfluorobutanesulfonate, is a chemical used in various industries, including fluoropolymer processing and semiconductor manufacturing. If you're handling PFBS, it's crucial to know how to store it safely. The potassium salt form, commonly used in industrial settings, is typically stored in aqueous solutions. With 3M planning to exit PFBS production by 2025, it's important for users to plan for alternative supplies or chemistries.

Can you store it in a poly tank?

Yes, you can store PFBS potassium salt solutions in a polyethylene tank. HDPE or XLPE tanks with polypropylene fittings and Viton gaskets are suitable for this purpose. However, if you're dealing with the free acid form of PFBS, polyethylene is not suitable; you'll need PTFE or PFA-lined tanks instead.

Key Issue: Transition Planning

With the impending phase-out of PFBS production by major suppliers, it's essential to plan for alternative chemicals or suppliers. This is particularly critical for industries like fluoropolymer processing and chrome plating, where PFBS has been a key component. Ensure your facility is prepared for this transition to avoid disruptions.

The safety that actually matters

• Always verify the chemical form: salt or free acid.
• Use the correct tank material to prevent corrosion or leaks.
• Plan for future supply changes due to regulatory shifts.
• Consult manufacturer compatibility charts for gaskets and fittings.

Common questions

Can I use a regular plastic tank for PFBS storage?

Yes, for the potassium salt form, but not for the free acid form.

What should I do about the upcoming PFBS supply changes?

Start identifying alternative suppliers or replacement chemicals now.

What gasket materials are compatible with PFBS?

Viton is suitable for the salt form; consult charts for specific applications.