Urea Storage Tank Material

[Doiscond]

I have been trying to determine what storage/transfer material options exist for 40% urea, kept at ambient/atmospheric conditions. There is a wealth of information online relating to materials needed for the high temperature/pressure production of urea, but I have not found much else for lesser conditions. I wouldn't want to spec a higher grade and more expensive material if it's not needed.

If anyone has any sources of information or verification of an existing system operating without issue that would be very helpful.

Thanks!

 

[EdStainless]

How large of a tank are we talking?
What are the purity requirements?
What will be your temperature control?