Sigma Aldrich has a SDS that says, "Heat sensitive. Store under inert gas" I don't agree with that statement but thought you should know about the ref. My experience says the inert gas recommendation is to prevent it from evaporating while storing. A liquid seal cap should negate the need for the inert gas too I think.
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> On Apr 11, 2014, at 12:39 PM, "Ralph B. Stuart" Previous post | Top of Page | Next post
> A lab tech noticed a statement on a Dichloromethane bottle that said "store under an inert gas". He would like to know if this is a safety recommendation or designed to maintain the quality of the chemical by avoiding exposure to environmental gases. From what I can find, it appears to be the latter, but I thought I would ask DCHAS-L to see if anyone knows of a safety reason for this recommendation.
> Thanks for any help with this.
> - Ralph
> Ralph Stuart CIH
> Chemical Hygiene Officer
> Department of Environmental Health and Safety
> Cornell University
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