allegations of bitcoin being used for untraceable money laundering

allegations of bitcoin being used for untraceable money laundering

This would probably fall foul of the ban on large amounts of liquids that is in force for hand luggage. That is, if you disregard the fact that aqua regia is bright orange in colour and emits fumes, which would make it very conspicuous anywhere outside of a chemistry lab (you could probably put an Irn-Bru label on the bottle to make the colour believable but you should make sure no Scots get near – they might drink from it).

No airline will let you take dangerous chemicals on board, anyway. And it's not really good for the gold, either.