• Removal of flux residues
  • Vapor phase process
  • Excellent cleaning performance


3M™ announced in December 2022, that all Novec™ products will be phased out and not available anymore by the end of 2025. No worries, Inventec has a drop-in replacement for this product but we recommend to contact us as soon as possible in order to minimize supply interruptions.

If you want to know more about the 3M™ products phase-out, click on the this link.


3M Novec 71DA

3M™ Novec™ 71DA Engineered Fluid is a hydrofluoroether, Methyl Nonafluorobutyl Ether (C4F9OCH3), in an azeotrope formulation with trans-1,2-dichloroethylene (t-DCE) and ethanol. This mixture is a true azeotrope with constant vapor and liquid composition at its boiling point.

Novec 71DA fluid is ideal for defluxing and is intended to replace ozone-depleting materials in many applications as well as certain aqueous cleaning processes and solvent coating applications.

This Novec product has zero ozone depletion potential and other favorable environmental properties. Novec 71DA fluid has a recommended time-weighted average exposure guideline of 750 ppm for the 3M™ Novec™ 7100 Engineered Fluid component (eight hour average), 200 ppm for trans-1,2-dichloroethylene (t-DCE) and 1000 ppm for ethyl alcohol. These exposure guidelines suggest there is a large margin of safety for use of Novec 71DA fluid in its intended cleaning applications.

The increased solvency and low surface tension, nonflammability and constant composition during boiling of Novec 71DA fluid make it ideal for immersion defluxing applications. The ethanol component of Novec 71DA fluid provides enhanced removal of ionic contaminants.

Letter from 3M – Inventec authorized distributor for EMEA area

Process examples

The best process will depend on factors such as operating conditions, equipment, desired cleaning time and the nature of contaminants. Our team is ready to advise you.