ISSUE:

Hello, could you guide me on what compound is being talked about according to the text that I will attach and their respective spectra. Please.

Some of the reactions that you mention to characterize it do not sound familiar to me, however the spectral information and boiling point agree with 4-methoxybenzyl alcohol. The reactions where oxygen is used as a nucleophile are known, however concentrated sulfuric acid at most could sulfonate it, and I don't know if sulfonic acid is soluble in acidic pH, dinitrophenylhydrazine should react with carbonyls which are not present.

In the spectroscopy part, I did not assign the IR absorption frequencies, however you can observe the main ones at
3319 corresponding to the OH segment and 2943 corresponding to the CH