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RE: Tube Amp Vintage Jacks

Posted by Eli Duttman (A) on July 19, 2015 at 16:18:44

In Reply to: RE: Tube Amp Vintage Jacks posted by dee eye why on July 19, 2015 at 13:31:39:

"Is denatured alcohol OK?"

If you are 100% sure it's anhydrous, yes it is. Water is an enemy of ferrous metal. A number of substances are used to denature ethanol, among them methanol. Methanol vapor is toxic. So, if you use denatured alcohol, work in a VERY well ventilated space. The toxicity of isopropanol is low, hence its popularity.

Mouser charges $11 for a pint of 99.8% pure isopropanol. That will last a long time and is quite useful for cleaning connectors and removing rosin flux. BTW, it's long odds that the last 0.2% is benzene (C₆H₆). It's not possible to obtain anhydrous alcohol from an alcohol water mixture by simple distillation. A constant boiling point (azeotropic) mixture forms. Adding benzene to the azeotrope and distilling again is an economical way to obtain an anhydrous product.


Eli D.

• Anhydrous Isopropanol at Mouser   (Open in New Window)

Edits: 07/19/15

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