Dear Kevin,
Just yesterday I was doing exactly the same thing, decanting FX39 into smaller bottles.
I always get mine from the chemist/drugstore/pharmacy (sorry, don't know the Australian English for this one). The days when they would give them to you are gone but they're not expensive and they last for a long time.
Caps are sold separately. The non-childproof ones are cheaper and more convenient.
I sometimes decant 250 ml into one bottle and the rest into small ones, then when the small ones are empty, from the 250 to the small ones again.
One more point is that these bottles are often around 10% bigger than their nominal capacity, presumably because only photographers fill them to the brim.
Some chemicals freeze OK but others don't; the soluble ingredients crystallise out and don't re-diissolve. I'd be EXTREMELY wary of freezing any chemicals unless I checked directly with the manufacturers (NOT the dealer).
Cheers,
Roger (
www.rogerandfrances.com)