Home > Resources > Secondary School Corner > Resource Book for Sixth-Form Practical Chemistry (Photos - Experiment 12)

Resource Book for Sixth-Form Practical Chemistry

Experiment 12

Green Chemistry: An Environmental-Friendly Preparation of 1,6-Hexanedioic Acid

image: A tube packed with anhydrous calcium chloride A quick-fit drying tube packed with anhydrous calcium chloride
image: Sodium tungstate(VI) dihydrate added into the round-bottomed flask Sodium tungstate(VI) dihydrate (Na2WO4 · 2H2O) added into the round-bottomed flask
image: Adding aliquat 336 to the reaction mixture Adding aliquat 336 (the phase transfer catalyst) to the reaction mixture
image: Hydrogen peroxide added to the reaction mixture Hydrogen peroxide (H2O2) added to the reaction mixture
image: Heating the reaction mixture under reflux with an hot oil bath Heating the reaction mixture under reflux with an hot oil bath
close-up image: Heating the reaction mixture
very close-up image: Heating the reaction mixture
image: Cooling the reaction mixture to room temperature Cooling the reaction mixture to room temperature
image: Cooling the reaction mixture in an ice-water bath. Cooling the reaction mixture in an ice-water bath. White crystalline solid formed.
image: White crystalline solid formed.
image: Collecting the crystalline 1,6-hexanedioic acid by suction filtration Collecting the crystalline 1,6-hexanedioic acid by suction filtration
close-up image: Collecting the crystalline 1,6-hexanedioic acid
very close-up image: the crystalline 1,6-hexanedioic acid
image: The product – 1,6-hexanedioic acid The product – 1,6-hexanedioic acid

2004 Department of Chemistry, The Chinese University of Hong Kong