Introduction

Novec™ Engineered Fluid HFE-7100, methoxy-nonafluorobutane (C4F9OCH3), is a clear, colorless and low-odor fluid intended to replace ozone-depleting materials in many applications. Its physical properties are compared with several other ODS replacement fluid candidate in Table 1.

This proprietary fluid has zero ozone depletion potential and other favorable environmental properties (see Table 2). It has one of the best toxicological profiles of the new CFC replacement materials, with a time-weighted average exposure guideline of 750 ppm (eight hour average).

The high boiling point, increased solvency and low surface tension of Novec fluid HFE-7100 make it ideal for use in vapor degreasing applications as a neat (pure), azeotropic or co-solvent parts cleaner. In addition, its chemical and thermal stability, non-flammability and low toxicity make it useful for many other industrial and specialty solvent applications (see below).

Typical Applications

 • Cleaning and rinsing agent Heavy-duty (co-solvent) cleaning– heavy oils, greases, fluxes Medium-duty cleaning (azeotrope)– oils, greases, waxes Light-duty cleaning (neat)– particulates, fluorolubes, light oils, fluoropolymers

 • Lubricant carrier Fluorocarbons Hydrocarbons Silicones

 • Spot-free water drying agent (with surfactants added)

• Specialty solvents, dispersion medium, reaction medium

 • Spray contact cleaner

 • CFC, HCFC, HFC and PFC replacement

 • Dielectric test media

Material Description 

Methoxy-nonafluorobutane1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99.5% minimum Appearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . .Clear, colorless

Non-volatile residue (NVR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.0 ppm maximum

 1 HFE-7100 fluid (C4F9OCH3) consists of two inseparable isomers with essentially identical properties. These are (CF3)2CFCF2OCH3 (CAS No. 163702-08-7) and CF3CF2CF2CF2OCH3 (CAS No. 163702-07-6).