Project Description
PRODUCT SPECIFICATIONS
|
PRODUCT |
Pyromellitic Dianhydride |
|
CAS # |
89-32-7 |
|
SYNONYM |
1,2,4,5-Benzenetetracarboxylic Dianhydride; 1H,3H-Benzo[1,2-c:4,5-c’]difuran-1,3,5,7-tetrone |
|
FORMULA |
C6H2(C2O3)2 |
|
APPEARANCE |
White or light yellow |
|
MELTING POINT |
282 – 288C |
|
BOILING POINT |
397 – 400C |
|
DENSITY |
1.68 g/cm^3 |
|
CONTENT |
>= 99.5% |
|
NEUTRALIZATION EQUIVALENT |
54.5 +- 0.2 |
|
PH |
2.2 (3.9 gl) |
|
VAPOR PRESSURE |
63 mm hg (290 c) |
|
MOLECULAR WEIGHT |
218.12 |
|
SOLUBILITY |
g100 g in water, reacts to give tetra-acid |
|
NOTES |
Pyromellitic Dianhydride is a very popular compound used mainly for producing polyimid resin and insulating paint. It is also a high temperature curing agent and plasticizer. |
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