I have denatured alcohol which, according to wikipedia, is composed of roughly:

  • 85% ethanol
  • 10% water
  • 3% methanol
  • 1% aceton
  • 1% pyridine

My solution has a blue color. Can I use this as a replacement for isoprop. or pure ethanol to clean my PCBs?

  • \$\begingroup\$ It depends on if the residue that is left will affect your PCBs operation. \$\endgroup\$ – PlasmaHH Feb 18 '16 at 11:39
  • \$\begingroup\$ IPA should be obtainable (for private citizens) at or below $5 per liter at larger quantities, absolutely no more than $8 per liter bought per liter, or $10 ~ 15 per liter at sub-liter quantities. With 1 liter you should be able to clean dozens if not hundreds of square meters of PCB when used in the correct sparing manner. I think buying a small bottle of IPA isn't going to be the major cost of your hobby. \$\endgroup\$ – Asmyldof Feb 18 '16 at 12:42

Acetone can dissolve some plastics, so I wouldn't use this unless it was carefully tested on those specific boards.

  • \$\begingroup\$ Do you maybe know if pyridine or the blue colorant can react with the pcb or leave residues which are conducting? \$\endgroup\$ – Mehdi Nellen Feb 18 '16 at 12:43

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.