Yes Dan. Stored in cardboard drums on a dock in south east asia. It melts.

I told them to order the tropical pack in plastic bags but the USAF wanted to save money.

Actually, no kind of hypo would stand those conditions. But I do believe that both the penta and anhydrous chill out when added to water. I'm not sure anymore, as it has been years since I've used the anhydrous.

PE