Oxalic Acid: storage life?

[nigelmercier]

Advice on using oxalic acid here http://www.agwoodcare.co.uk/more_info_oxalic.html
Safety data here http://www.agwoodcare.co.uk/COSHH/Oxalic Acid.doc

I've quoted Vic above as this is very useful info.

I've just been given a large bag of Oxalic Acid crystals by a friend. The bag has been open in his shed for probably 10 years, will it have degraded?

I transferred it to a large drum, crushing any major lumps as I went; they all disintegrated fairly easily. Looks nice and clean, pretty much like castor sugar, so I guess a label would be a good idea on the boat

 

[macd]

A label is a very good idea. Wouldn't want your crew to shove it up their noses.

And if it was oxalic acid when it went in the bag, it still is. It only stops being if it reacts with something else.

 

[VicS]

Perfectly stable under all normal conditions AFAIK

 

[nigelmercier]

Thanks both.

 

[captainboo]

Mine worked fine after 4 years stored in my garage!

 

[Mad Pad]

Will see you out.We use it industrially,but I have also had some on the boat for 10 years no problem and its not hydroscopic either so doesn't have to be in a sealed container.Just make sure the Authorities or kids don't mistake it for the big C!....I've been told they look very similar!!!!

 

[nigelmercier]

...Just make sure the Authorities or kids don't mistake it for the big C!....I've been told they look very similar!!!!

Might be interesting if my bag gets opened at the airport then.