Lab 5 - 1 Scott Wise March 18, 2007 Lab 6: Carbohydrate...

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Scott Wise March 18, 2007 Lab 6: Carbohydrate Chemistry: The Preparation of Glucose Pentaacetate Objective: To prepare and analyze glucose pentaacetate by melting range, polarimetry and 1 H-nmr spectroscopy. Reactions: Procedure: Refer to Pages 53 of Chemistry 232 Laboratory Manual 1 1
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Physical Properties: Figure 1: Reagents for formation of glucose pentaacetate Compound MW (g/mole) Amount Mole Yield Physical and Safety Data Acetic anhydride 102.09 20 mL D 1.08 g/mL. Flammable. Harmful by inhalation and if swallowed. Causes burns. Moisture sensitive. glucose 180.16 4 g Dust may cause mechanical irritation to eye or skin. iodine 253.81 50 mg Mp 113 o C Highly Toxic, corrosive. Sodium bisulfite 120.06 drops Risk of serious damage to eyes. Water-reactive. Sodium bicarbonate 84.007 25 mL N/A N/A Moisture sensitive. Flush down drain with stream of water Figure 2: Products of formation of glucose pentaacetate Compound MW (g/ mole) Amount Mole Yield Physical and Safety Data Glucose pentaacetate
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Lab 5 - 1 Scott Wise March 18, 2007 Lab 6: Carbohydrate...

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