Making benzaldehyde - benzalchloride acid hydrolysis

Impressive how this ~8h process can be fit into such short video... Ideally I would try to "postprocess" crude benzaldehyde with hexamine here, but I didn&have any handy. also I will probably do a bunch of experimentation here, to try to optimize overall procedure and there is only so much time I can fit in 1 week. In any case good enough for a vid I would say, so it&out. Short version notes: 214ml of the benzyl/benzal chloride/trichloride was placed in the 1L 3-neck flask above, 405 ml 32% HCl was added, followed by 135ml of distilled H2O, which leads to about a x10 excess of H2O in 25% HCl. The contents were refluxed with the reflux temperature at 106C - this is the same temperature mentioned in the patent, but what is important is that it self adjusts- there is no need for a fixed bath. The reflux took 6hrs at which stage HCl evolution ceased, as evidenced by cooling of the absorber bottle and no more NaCl crystals forming on the surface.