Hello everyone.

I have a new bottle (closed and sealed bottle) of Formaldehyde solution 37 % from Sigma ( 252549, ACS reagent, 37 wt. % in H2O, contains 10-15% Methanol as stabilizer (to prevent polymerization)) and there is a lot of precipitate inside.

is this a common occurrence? Can I use it?

Thanks for the answers

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