I'm making a solution with linear poly(ethyleneimine) $\ce{[CH2CH2NH]_{n}}$. The bottle indicates that the substance is hygroscopic and must be dealt with under inert gas. Is this really necessary? I don't currently have access to such a space - just the PEI and a balance.

  • $\begingroup$ Well, depends if water in your solution makes problem. $\endgroup$
    – Mithoron
    May 26 '15 at 11:07

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