The preparation of aspirin

The preparation of aspirin (use 4 fume cupboard)

• Access to a fume cupboard

• DRY Pear/round bottom shaped flask, 25 cm3

• Hot water bath 60-90 Degrees for 20minutes (Kettles)

•  thermometers

•  large beaker for the water bath

• Measuring cylinder, 10 cm3

• Bath of iced water

• Glass stirring rod

• stopclock

• Balances

• Spatulas to collect aspirin at the end

• Glass pens

•  Funnel

• Buchner funnel and suction apparatus

• Watch glass

•  condenser in fume (Not needed)

Chemicals

• 2-Hydroxybenzoic acid, 1 g

• Ethanoic anhydride, 2 cm3 (Acetic anhydrade yellow cupboad shelf 2)

• Eight drops of concentrated phosphoric acid

• Iron(III) Chloride (Step 2)

• Phenol (Step 2)