SPI Supplies is the source!

PERFLUOROSOLV® PFS-2 Perfluorinated Cleaning Solvent

Recommended cleaning solvent for perfluorinated polyether fluids and greases


Appearance: Clear liquid
Odor: None
CAS #69991-67-9
Boiling Point/Range: 57C
Vapor Pressure: 228 mg Hg @ 25C
Specific Gravity: 1.070
Water solubility: 14 ppm(wt)

A Viable CFC-Free Cleaning Substitute for Ozone Depleting Solvents

PERFLUOROSOLV® PFS-2 is a low molecular weight perfluoropolyether solvent and diluent that can be used as a replacement for CFC-113 and other ozone depleting solvents being restricted by the governments of the world. Be aware of our Ozone Statement.

PERFLUOROSOLV® PFS-2 is safe, inert and non-toxic. It has zero Ozone Depletion Potential and is not classified as a VOC by the US Environmental Protection Agency (EPA). It contains no chlorofluorocarbons (CFCs), chlorine or bromine. It requires few safeguard precautions or use-restrictions and is completely compatible with all metals, rubbers and commercially available elastomers and plastics.

PERFLUOROSOLV® PFS-2 was formulated to be fully miscible with perfluoropolyether (PFPE) oils and greases (Fomblin®, Krytox®, and some Braycote®) and perfluorocarbon (PFC) fluids such as those often used in the semiconductor and electronic manufacturing operations. PFS-2 is also fully miscible with chlorotrifluoroethylene (CTFE) oils above 45° C. It is the recommended solvent/diluent for Ausimont's wide range of fluids and lubricants marketed under the Fomblin and Galden® trademarks.

Whether used alone or in conjunction with other solvents, PERFLUOROSOLV® PFS- 2 performs well in many electronic and semiconductor cleaning functions, such as: pump cleaning, degreasing, dewatering, vapor blanketing, reducing flash point, eliminating trace residue and other niche cleaning applications.

Possessing a relatively high boiling point and low evaporation rate, PFS-2 solvent is well suited for cleaning operations where:

When tested directly against CFC-113 (formerly available as Freon® TF for example), PFS-2 solvent required slightly more time but was equally efficient in achieving the desired results. PFS-2 was actually preferred in those cleaning operations where CFC-113's high evaporation rate made its use too costly or impractical. Comparative testing showed there was up to 70% less evaporative loss with PFS-2 solvent. In almost every cleaning procedure testing, PFS-2 solvent was found easier to use, safer to handle and required no special ventilation.

PFS-2 Featured benefits

Typical Applications

PFPE and CTFE fluids are used extensively in semiconductor and electronic manufacturing for vacuum pump lubrication and in chip etching processes. Here, product integrity literally depends on maintaining ultra clean environments, so thorough cleanings are mandatory. PFS-2 has proven to be highly efficient in the elimination of contaminate build-ups or organic cleaner residues. PFS-2 is also used in vacuum pump and compressor components during flushing and rebuilding operations.

Similarly, compounders and packagers of PFPE and CTFE based products, facing continuous workplace and machinery clean-ups, have successfully converted to PFS-2 solvent for easier, less restrictive cleaning operations. PFS-2 also performs many diluent functions for specialized product applications. PFS-2 is also used to improve the flashpoint of organic solvents and as a vapor blanket to lower both solvent losses and the fire hazard.

The application of PFS-2 for the removal of a PFPE grease, such as Fomblin Y-VAC 3, is a bit more complicated. These greases as mixtures of a finely ground PTFE(polytetrafluoroethylene) powder with a Fomblin PFPE liquid, generally one that is used or could be used as a diffusion pump fluid in a high vacuum system. PFS-2 is able to solve only the liquid component of the grease. This means that for the composite structure, the PFS-2 removes the liquid phase but not the solid particulate phase, and it should be pointed out that there is no known solvent for the PTFE particles. Hence, the application of PFS-2 in a grease removal situation, will do some good for sure, however some kind of mechanical actions will be required for the removal of the solid particulates. In terms of the removal of the particulates from fine crevices or cracks in a structure, the final removal of the particles might still be an unattainable goal with this approach.

Perfluorosolv® PFS-2SPI #EachIn Stock
500 ml00021-RA$ 134.16 Add to cartYes
1 gallon00021-XK   954.00 Add to cartYes

View cart     Complete order

To Ask a Question or Make a Comment

To Place an Order or Request a Quote

Return to:

Friday September 04, 2015
© Copyright 1999 - 2015. By Structure Probe, Inc.
Contacting SPI Supplies and Structure Probe, Inc.
All rights reserved.
All trademarks and trade names are the property of their respective owners.
Privacy Policy

Worldwide Distributors, Representatives, and Agents Flag logo