08/08/2015 at 13:30 •
My lab in Germany is ready for small chemical experiments. I still do not have a water jacketed condenser apparatus, so I tried it without, see Stage 2 video.
Synthesized salicylic acid, the chemical precursor for Aspirin:
05/19/2015 at 09:14 •
Salicylic acid sublimes at at 76 °C. This makes it easy to vapor coat a kind of hot bed with salicylic acid. A ball pen like extruder moves then over the thin layer of salicylic acid and dispenses acetic acid/catalyst to form a layer of acetyl-salicylic acid.
We can use solvents as well to dispense solid substances equally on a plane surface. We do that every day, writing notes on a paper, painting...
A simple 'chemical ball pen'. A cleaned ball pen tip (0.5 mm) was glued into the tip of a 2.5 ml syringe with 2-component 5-minutes epoxy resin adhesive. Now we can dispense any chemical on a carrier:
04/30/2015 at 07:04 •
Complete aspirin synthesis lab: reaction apparatus with heating element, water/oil bath, flask and Allihn condenser, funnel with vacuum filtering flask...
Power supply/measurement unit added: