Concentration of formalin aqueous solution
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When a formalin aqueous solution is concentrated, for some reason water and methanol come out first, rather than the low-boiling-point formalin? Thank you to all the experts for guiding me through this
In aqueous solution, formaldehyde does not exist in its pure form; it is primarily a complex equilibrium mixture of methylene glycol, polyoxymethylenol, and hemiacetals, with very little free monomeric formaldehyde present
Thank you so much! I also found out that formaldehyde undergoes many reactions in aqueous solutions!
You’re welcome. I’m also involved in the production of formaldehyde; let’s keep in touch if we have the chance in the future
Reply to 2# hxg701: It should mainly be methylene glycol, right? In that case, whether formaldehyde will evaporate depends on the decomposition temperature of methylene glycol, right?