ok, as much as i dont know what this will do to a fermenter, i do know a little about the science side of it,
milpod - hydrogen peroxide of any concentration should not need any rinsing, as it degrades into H2O and O2 (Water and oxygen gas), neigher of which need to be rinsed off a fermenter.
whistling jack - yes, it is used in the constructions of explosives and also is the source of oxygen at Cape Canaveral (used in rocket fuel). but as long as i dont go sealing my fermenter while a big vat of the stuff is left in there then throw in a match, that shouldnt be a huge problem.
captain black beer - firstly, hydrogen peroxide (chemical formula of H2O2) is fairly unrelated chemically to sodium percarbonate (chemical formula of NaHCO3). but your point about the instability is valid, H2O2 rapidly decomposes into H2O and O2 in the right conditions (heat and light being the main ones). in so doing, it acts as a very powerful oxidising agent (stronger than potassium permanganate), which is why it works as a sanitiser. but your point about the explosive nature of this compound in certain concentrations is also a apt one, but so are a lot of other chemicals that are commonly found around the house.
from what i can tell, the reason that brewing products contain both hydrogen peroxide and silver ions is that silver is a catalyst for the breakdown of peroxide. how many people find that the hydrogen peroxide no rinse sanitisers really work? anybody had bad infections after using them? could they have been caused by something else?
cheers
Lobby