http://www.uiowa.edu/~chemsafe/MSDS/SodiumAcetate.htm (http://www.uiowa.edu/~chemsafe/MSDS/SodiumAcetate.htm)
), so heating above that should ensure it is anyhydrous. Here's a lab procedure with pretty graphics for the preparation of acetic acid from anhydrous sodium acetate:http://www.chemistry.lmt.md/sezennur/subjects/experiments/042_prep_acetic_acid.pdf (http://www.chemistry.lmt.md/sezennur/subjects/experiments/042_prep_acetic_acid.pdf)