organic 
ANALYTICAL AND ORGANIC CHEMISTRY
LECTURER’S NAME : DR.RAPIDAH OTHMAN
COD SUBJECT : NKB 10103
NAME : NUR NADIRAH BINTI BAHARUDEAN
ID NUMBER : 55220114255
CHAPTER : ORGANIC CHEMISTRY
CONTENTS
1,4-BENZENEDICARBOXYLIC ACID
Introduction The organic compound’s group that I’ve chosen in this assignment is 1,4-benzenedicarboxylic acid. 1,4-benzenedicarboxylic acid and also called as Terephthalic acid containing the carboxyl group and benzene group. Sometimes it simply referred to as a acid group. Diagram 1.1 1,4-benzenedicarboxylic acid
Summarized ways the carboxylic acid group is shown :
CO2H or --- COOH
( Unknown ,2013, page 185)
Physicals and Chemical Properties of 1,4-benzenedicarboxylic acid
Chemical Properties
Physical Properties
Stability
Stable under ordinary conditions
Physical state white crystalline powder
Density
1.522 g/cm³
Melting point
300 C
Acidity (pKa)
2.89, 5.51
Boiling point
402 C (sublimes)
Specific gravity
1.58
Molecular weight
194.1840
Formula
C10H10O4
Solubility in water
Insoluble
(http://www.chemicalland21.com/petrochemical/PTA.htm)
The Synthesis of 1,4-benzenedicarboxylic acid
Amoco Process
In the Amoco process, terephthalic acid is produced by oxidation of p-xylene by oxygen in air:
Diagram 3.1
The process uses cobalt-manganese-bromide catalyst. The bromide source can be NaBr, HBr or tetrabromoethane where bromine functions as a regenerative source of free radicals. In this process, acetic acid is the solvent and oxygen from compressed air is the oxidant. The combination of bromine and acetic acid is found to be highly corrosive and hence the equipment is lined with titanium.
(http://en.wikipedia.org/wiki/Terephthalic_acid)
Cooxidation
The cooxidation technique uses auxiliary substance which is simultaneously oxidized to H2O2
LECTURER’S NAME : DR.RAPIDAH OTHMAN
COD SUBJECT : NKB 10103
NAME : NUR NADIRAH BINTI BAHARUDEAN
ID NUMBER : 55220114255
CHAPTER : ORGANIC CHEMISTRY
CONTENTS
1,4-BENZENEDICARBOXYLIC ACID
Introduction The organic compound’s group that I’ve chosen in this assignment is 1,4-benzenedicarboxylic acid. 1,4-benzenedicarboxylic acid and also called as Terephthalic acid containing the carboxyl group and benzene group. Sometimes it simply referred to as a acid group. Diagram 1.1 1,4-benzenedicarboxylic acid
Summarized ways the carboxylic acid group is shown :
CO2H or --- COOH
( Unknown ,2013, page 185)
Physicals and Chemical Properties of 1,4-benzenedicarboxylic acid
Chemical Properties
Physical Properties
Stability
Stable under ordinary conditions
Physical state white crystalline powder
Density
1.522 g/cm³
Melting point
300 C
Acidity (pKa)
2.89, 5.51
Boiling point
402 C (sublimes)
Specific gravity
1.58
Molecular weight
194.1840
Formula
C10H10O4
Solubility in water
Insoluble
(http://www.chemicalland21.com/petrochemical/PTA.htm)
The Synthesis of 1,4-benzenedicarboxylic acid
Amoco Process
In the Amoco process, terephthalic acid is produced by oxidation of p-xylene by oxygen in air:
Diagram 3.1
The process uses cobalt-manganese-bromide catalyst. The bromide source can be NaBr, HBr or tetrabromoethane where bromine functions as a regenerative source of free radicals. In this process, acetic acid is the solvent and oxygen from compressed air is the oxidant. The combination of bromine and acetic acid is found to be highly corrosive and hence the equipment is lined with titanium.
(http://en.wikipedia.org/wiki/Terephthalic_acid)
Cooxidation
The cooxidation technique uses auxiliary substance which is simultaneously oxidized to H2O2
References: Unknown . 2013 . “Chemistry KFP02205”. page 185 Wikipedia . (15 September 2014 at 16:17) . Terephthalic acid. Retrieved from http://en.wikipedia.org/wiki/Terephthalic_acid Chemicalland21 . Retrieved from http://www.chemicalland21.com/petrochemical/PTA.htm NIST, National Institute of Standards and Technology . 2011 . Retrieved from http://webbook.nist.gov/cgi/cbook.cgi?ID=C120616&Mask=FFF