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ADIPIC ACID
CHEMICAL NAME hexanedioc acid
SYNONYMS adipic acid 1,4-butanedicarboylic acid
STRUCTURAL FORMULA HOOC - (CH 2 ) 4 - COOH
MOLECULAR WEIGHT 146, 146
CAS No. (CHEMICAL ABSTRACT SERVICE) 124 - 04 -9
CE No. (COUNT OF EUROPE) 607 - 144 - 00 - 9
ASSAY % 99.7 Min., 100.2 max
WATER % 0.20 max
ASH 2.0 ppm max
IRON AS Fe 0.5 ppm max
METHANOL SOLUTION COLOUR (APHA) 6 max
TOTAL NITROGEN (TN)
mpm
ppm
15 max
1.5 max
MOLECULAR WEIGHT 146.14
BOILING POINT, 760 mm Hg, o C 330 with decomposition
MELTING POINT, o C 152.1
DENSITY (SOLID),
g/cc
lb./cu. ft loose
lb./cu. ft packed
1.366
40
50
VISCOSITY (MELT)
160 o C, cps
193 o C, cps
4.54
2.64
SPECIFIC HEAT OF SOLID, cal/g 0.583
SPECIFIC HEAT OF VAPOR, 300 o C, cal/g 0.40(est.)
HEAT OF VAPORIZATION, cal/g 130.9
HEAT OF COMBUSTION, cal/g 4579
HEAT OF FUSION, cal/g 27.4
HYGROSCOPICITY Non-hygroscopic at 27 o C at 85% RH
FLASH POINT (CLEVELAND OPEN CUP), o C 210
CRYSTAL Monoclinic
CRYSTAL HABIT Needles
IONIZATION CONSTANTS AT 18 CC
K 1
K 2
4.6 X 10 -5
3.6 X 10 -6
ACIDITY OF AQUEOUS SOLUTIONS, 25 o C
ADI-PURE
% by wt
0.1
0.2
0.4
0.6
1.2
2.5
pH

3.2
3.1
3.0
2.9
2.8
2.7
VAPOR PRESSURE VERSUS TEMPERATURE
°C
206
245
265

mm Hg
10
50
100

 

 



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