Chapter twenty-eight: Nitration of Methyl Benzoate

 Chapter twenty eight: Nitration of Methyl Benzoate Essay

Chapter twenty-eight: Nitration of Methyl Benzoate

I. General Information:

A. )Microscale Nitration of Methyl Benzoate

N. )

C. )May 18, 2008

M. )Reaction(s), which include molar world and all relevant physical data E. )Mechanism for the nitration of chlorobenzene:

II. Purpose: From this experiment we are to take a chilly solution of your aromatic ester that is initially dissolved in sulfuric acid solution and is after that reacted with nitric acid solution. This is a very exothermic reaction and is retained under control by means of cooling; after which the combination is poured onto ice. The solid product are isolated by simply filtration and recrystallized via methanol, in which it is very soluable.

A. )Materials:

1). 6mL of focused sulfuric chemical p

2). 30g of methyl benzoate

3)Mixture of. 2mL of targeted sulfuric acid and. two mL of concentrated nitric acid 4)Ice

5). a couple of mL ice cold methanol

M. )Procedure in Brief:

1)In a ten x 100 mm reaction tube put. 30g of methyl benzoate and. 6 mL of concentrated sulfuric acid 2)Flick the conduit or employ magnetic stir

3)Cool the mixture to 0 levels Celsius

4)Add dropwise utilizing a Pasteur pipette a mixture of. 2mL of focused sulfuric chemical p and. 2mL of focused nitric acid solution 5)Keep the reaction in ice cubes

6)Warm to room temperature and put onto installment payments on your 5g of ice.

7)Isolate the solid applying suction purification

8)Wash the merchandise with normal water, followed by. 2ml of cold methanol 9)Remainder is considered and recrystallized with the same weight of methanol

3. Data Collection

Weights:

Ice cubes: 2 . 63g

Crude Mass:. 33g

Refined Mass:. 179g

Methanol: zero. 2mL

Methyl Benzoate:. 32g

Melting Ranges:

Crude Mass: 45-62 C

Refined Mass: 76-80 Grad

IV. Sample Calculations

Ideal: Melting point of primitive Methyl 3-nitrobenzoate of 74 – seventy six degrees Celsius Melting point of processed Methyl 3-nitrobenzoate is 80 degrees Celsius

The: Crude Mass mp averages to 52. 5

Refined Mass mp...

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