Warning: Re: etching aluminum?

[Prof. Antonio Guerrieri]

THE READING OF THE FOLLOWING IS HIGHLY RECOMMENDED

Someone wrote:


>> Guess : try H2SO4 (sulphouric acid ?), NHO3 (nitrogen acid ?), mixture
>>out of both.
>> A mixture out of both acids will disolve even gold !

Boys,

electronics is electronics and chemistry is chemistry.

The use of strong acids or the mixing of chemicals is not like the
soldering of a CMOS.

If you do some mistakes in soldering or connecting electronic components,
the worst thing you can expect is something like lose money.

IT IS NOT SO WITH CHEMICALS!!!

Be careful with chemicals, expecially with strong acid like sulphuric acid:
H2SO4 reacts in an inexpected and violent way even with water so the use of
proctetive wears (gloves, glassses, ..) is strongly recomended.

Mixing acids or acids and bases is dangerous too!!! Mixing strong acids
very often give up the evolution of dangerous gases.

That's all.

Antonio Guerrieri

University Professor in Analytical Chemistry