The question is, is this real or fake? I don’t hear much about this type of explosive being used. And if it was this easy to make and this effective I would think it would be more common. I have also read a lot from people saying the threat from binary explosives is way overstated.
On the other hand, the Government seems to be honestly worried (not always the best argument I know). More importantly, Derek did a couple of posts (here and here) a while back that seemed to indicate that there was stuff out there we should be worried about. I imagine that someone with Phd in chemistry would know.