To make a reac tive liquid TATP (not waiting for crystals to form). youd need about a (---)to(---) % Wt/Wt, an youd have to react about a 70% H2O2 with a catalyst in an H+ bath (pH has to be kept below (---)).
Lets use the weight of water about 8.3 pounds per gal.Wed need about 2.2 gallons of this **** as a liquid to make a boom(which would be just about as effective if it were half a gallon of gasoline in an Oxygen environment. (FAncier) chemistry doesnt make a better product. In fact FAB's (fuel air bombs are about the second most powerful explosive around (after a nuke)
I think that somebody would ask about the big jug of "ROUNDUP" your carrying on the plane. THATS why the crystals are used.
Now TATP has been used in the past, as detonators .You can set em off with a cigarette. The "SHoe Bomber" Richrd Reid had a TATP detonator set as a little pencil sized plug into the heel of his show, which contained C-4 or RDX.
So what was the deal at Heathrow last week?