video tutorial Acetylanthranilic acid and a (failed) test for triboluminescence

Name: video tutorial - Acetylanthranilic acid and a (failed) test for triboluminescence
Uploaded: 2025-12-11T09:03:44.078Z
Duration: 5 min 44 s
Description: use. You can find out how to make this in our other video linked here. We transferred the...out 25 ml of acetic anhydride. You can find out how to make this in another of our videos linked

Investigated triboluminescence and synthesized acetyl anthranilic acid from anthranilic acid using acetic anhydride with reflux heating.
Dry 10 g anthranilic acid; dissolve in 25 mL acetic anhydride in a suitably sized flask; apply internal reflux and heat to a low boil for 10 minutes, then swirl as it dissolves and re-forms before final dissolution.
Reflux until stable, then add 8 mL water, resume heating to boiling, and allow crystallization over a few hours.
Filter and wash crystals with ice-cold methanol, then dry to yield 11.7 g of crystalline acetyl anthranilic acid (90% yield from starting anthranilic acid).
Attempted to observe triboluminescence by crushing crystals and drying at 100°C, but no flashes were observed; considering recrystallization to obtain a large single crystal and asking for tips.