Posted by Chuck(G) on June 19, 2003 at 19:27:11:
In Reply to: Re: Re: Re: Re: Re: Re: Re: Re: CUT LIP posted by Chem student on June 19, 2003 at 16:40:51:
H2O2 breaks down quickly when illuminated.
True--but at room temperature, even in a dark bottle, it breaks down gradually over time. If you've got a 3 or 4 year old bottle that's been opened, it's probably mroe than a little flat by now.