If your sn is caked it may still be good.

[sm20]

"Chemtrade suggests that under proper storage conditions, the shelf life for dry sodium nitrite is at least 3 years. While sodium nitrite may cake, clump and harden within 6 months of the manufacture date, the chemical assay will remain within manufacturing specifications for at least 3 years." https://ingredi.com/content/pdfs/So...facturing specifications for at least 3 years.

 

[WornOutLife]

Woah. I didn't know this!
I should start doing proper researches but I'm just so lazy lol.

 

[sm20]

Woah. I didn't know this!

It feels like your being sarcastic but I'm not entirely sure. I know the 3 years part was common knowledge but I thought I might as well include it anyways.

 

[WornOutLife]

It feels like your being sarcastic but I'm not entirely sure. I know the 3 years part was common knowledge but I thought I might as well include it anyways.

Oh sorry! I wasn't being sarcastic at al. I didn't know it for real haha.
I'll edit a bit that comment! My bad!

Hope you have a nice day.

Hugs and love,

Matt

 

[LaminarFlow]

The SN will slowly absorb water from the air and this will cause the SN crystals to fuse and turn into hard clumps. The clumps will still dissolve in water when you will use them but it will take more time.

If you want to prevent the formation of clumps you can store the SN container in an airtight box (i.e. Tupperware) with a few desiccant packets.

 

[Amumu]

I'll say it again but according to the PPH, if properly stored, SN has an infinite shelf life.
Thanks for the piece of advice concerning the airtight box.

 

[freedom_in_death]

My SN has arrived today and it was a bit clumped up too