you can just get almost any chemistry book and find dangerous chemicals in it..
but how is hydrogen gas dangerous..
as far as to my knowledge, H2
is soo light that in air it would disperse very fast, making it less a risk of explosion or fire hazard then propane and methane, and all that nice heavier compounds that kill many people. I mean it has been proven that the most likely cause of the Hindenburg accident was not the hydrogen but the spark caused on the highly flammable coating outside of the vessel.
it would only be dangerous under high concentrations in a relatively small area....
and i really do not see anything wrong with the golden book of chemistry experiements, i have the .pdf copy of it, and really its a collecteble, is not like i could print out several copies to sell, i mean i probably could, but it would not be original now would it.. there are some factors that would apply to the copyright laws, and generally when a book is more than a certain number of years (forgot how many) the book becomes something that can be copied and resold by virtually anyone, this is the case with Romeo and Juliet, or any of the shakespeare's works, i think even any of the arthur conan doyle's works can be found online with out any risk from copyright laws. you cannot say that you wrote it still, but who would do that
, and i am pretty sure that a banned book may be somewhere.. but really i like it, it tells you where you can get some materials from grocery stores, and hardware stores etc. etc.