What is the Best nPB Replacement?

nPB replacement cleaners are on the rise.  The abbreviation, nPB stands for “Normal Propyl Bromide” or “1-bromo-propane” indicated by the CAS #‎106-94-5 on Safety Data Sheets. This nonflammable fluid is a powerful cleaner with a low global warming potential. It is an alternative to CFC-113, methyl chloroform, hydrochlorofluorocarbons (HCFCs) and perfluorocarbons (PFCs) in many critical cleaning, drying, carrier fluid and other high-value specialty uses where reliability is paramount.

Based upon toxicological research conducted by ACGIH, the Acceptable Exposure Limit (AEL) is 0.1 parts per million (ppm), using the 8-hour  time weighted average (TWA) methodology.  This means that nPB-based fluids should only be used safely in high-quality, tight, modern vapor degreasing equipment.

However, Governmental agencies in the U.S., Canada and elsewhere around the world have been moving to restrict nPB use. nPB phaseout in Europe is complete as of July 2020. Therefore, companies currently using nPB are proactively looking for a replacement for nPB.

Fortunately, there are a number of good nPB replacement cleaners available through MicroCare. These replacements for nPB are versatile, removing many types of contamination such as oils, grease and fluxes. They also feature the chemical physical properties (boiling point, flash point, specific gravity, viscositysurface tension, etc.) that make the nPB replacement an excellent cleaner but also easy to maintain, recycle and reuse.

In addition, the replacements for nPB are nonflammable, making them safer to ship, store and use.

Some of the best nPB replacements include Tergo™ MCF Metal Cleaning Fluid and Opteon SF79 Specialty Fluid.