Homebrew PCBs

On Thu, 12 Apr 2007 01:16:35 +0200, Len Warner <novost@...> wrote:

> It is more hazardous in handling than hydrochloric acid:
> because it not volatile - so un-neutralized splashes get
> more concentrated as they dry, rather than evaporating;
> and also, diluting concentrated sulphuric acid is highly
> exothermic. (Always add acid to water, not water to acid.)


Will it really concentrate? Sulphuric acid is very hygroscopic, should it  
not absorb moisture from the air?

But this was not the catch making it unsuitable for me, that much i  
remember.

ST