Back to category: Science

Limited version - please login or register to view the entire paper.

Asparin Investigation

Anti-bump granules

Beakers

Buchner filter assembly

Burette

Crushed Ice

Dilute

Distilled water

Ethanoic anhydride - 8.76cm3

Glacial ethanoic acid Heatproof mat

Microburner

Oil of wintergreen (2 methyl-2-hydroxybenzoate) - 10.35g

Reflux apparatus

Retort stand, boss head and clamp

Sodium hydroxide - 20.69g METHOD PART ONE

I. Mix 10.35g oil of wintergreen, 20.69g sodium hydroxide and 103.5 cm3 of water in a 250cm3 conical flask.

II. Drop in a few anti-bump granules, attach a reflux condenser to the flask, and boil gently using a Microburner (or heating mantle) for 20 minutes.

III. When the flask has cooled pour the contents into a conical flask surrounded by crushed ice in a large beaker.

IV. Add dilute sulphuric (VI) acid to the cold hydrolysate until the precipitation of the 2-hydroxybenzoic acid is complete.

V. Filter off the precipita...

Posted by: Raymon Androckitis

Limited version - please login or register to view the entire paper.