glacial acetic acid solidified

[RoundBottom]

file this one under PROPER CARE AND FEEDING OF REAGENT.

a 4L still sealed jug of glacial acetic acid that sat in the garage over the (very mild) winter has solidified into a large chunk.  despite the weather being warmer, and the jug now sitting in a heated (15°C-20°C) area, the majority of it is still solidified. 

i'm assuming this happend because the melting point of GAA is 16.6°C and while in the garage, it was subjected to 0°C-5°C all winter. 

is it best to thaw it as one would a block of ice?  eg, put it in a warm pail of water.

[terbium]

is it best to thaw it as one would a block of ice?  eg, put it in a warm pail of water.
Sure, or even just a warmer room. It will eventually all melt and be just as good as new.

[raffike]

My GAA also froze when winter came,it nicely melted at 20 C.

[Chromic]

They don't call it glacial acetic acid for no reason.  

[starlight]

but I loosened the top slightly before warming up the bottle. Did not want pressure building up too much inside

[RoundBottom]

thanks for the input kids.  it's already thawed out, but appears the slightest bit discolured.  no big deal, it's cheap and plentiful.