[livohim]

how difficult is this to make tetrasilver tetroxide Ag4O4. Are all those things avaliable to a private person
4AgNO3 + 2Na2 S2 O8 + 8NaOH = Ag4O4 + 4Na2SO4 + 4NaNO3 + 4H2O

it is used for cleaning water, in medicine

[BluRay]

how difficult is this to make tetrasilver tetroxide Ag4O4. Are all those things avaliable to a private person
4AgNO3 + 2Na2 S2 O8 + 8NaOH = Ag4O4 + 4Na2SO4 + 4NaNO3 + 4H2O

it is used for cleaning water, in medicine

Don't know which are the reaction conditions, however sodium peroxydisulphate Na₂S₂O₈ is available commercially.
http://en.wikipedia.org/wiki/Sodium_persulfate