Decay/Reactivity of DMSO and MSM

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SUMMARY

Dimethyl sulfoxide (DMSO) can be stored for extended periods without significant degradation, as users report it remains effective even after years of infrequent use. While some individuals prefer refrigeration to prolong its shelf life, no notable differences in quality have been observed compared to room temperature storage. Methylsulfonylmethane (MSM) was mentioned, but specific storage insights were not provided. Overall, DMSO demonstrates remarkable stability under various storage conditions.

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  • Understanding of chemical storage practices
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Chemists, laboratory technicians, and anyone involved in the storage and application of DMSO and MSM in research or therapeutic contexts.

Mk
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How long can one store dimethyl sulfoxide (DMSO) or methylsulfonylmethane (MSM)?
 
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I don't have any experience with MSM, but have never had DMSO go bad. DMSO is one of those things we use a little bit every few years, and then sits on a shelf in between, and still seems just fine. I've known a few people to store it in the fridge if stored a long time, rather than at room temp (so it will freeze), but I haven't noticed any difference between the two storage methods other than the nuisance of having to wait for it to thaw when taken out of the fridge.
 

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