Letter 34050

Sodium cyanide gets rock hard [Pennsylvania] 

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Here is the problem.....our company buys sodium cyanide in 100 pound containers, the container itself I believe is steel. The cyanide is in a clear plastic bag. When we open it, after a few days the cyanide gets rock hard (it's the granular form) and is a pain to scoop out of the container, we twist the bag and replace the lid that comes with the container but this does not help at all, if anyone has any solutions or suggestions I would gladly welocme them.

Brian Gaylets
- Scranton, Pennsylvania, U.S.A.

Sounds like you have a moisture problem. Had a similar problem when I worked packaging roofing sealants. We used a shot of Nitrogen before capping off the 5 gal. containers. If Nitrogen doesn't react with the cyanide you could do the same. Before closing the plastic bag try a shot of Nitrogen. It neutralized the moisture for us.

Hope this helps,

Fred Read
- Duluth, MN, USA

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