Home Categories Organic Chemistry Pyromellitic dianhydride
A6688612

Pyromellitic dianhydride , 96% , 89-32-7

Synonym(s):
1,2,4,5-Benzenetetracarboxylic-1,2:4,5-dianhydride;Benzene-1,2,4,5-tetracarboxylic dianhydride;PMDA;Pyromellitic dianhydride

CAS NO.:89-32-7

Empirical Formula: C10H2O6

Molecular Weight: 218.12

MDL number: MFCD00005005

EINECS: 201-898-9

Update time: 2022-07-08

PRODUCT Properties

Melting point: 283-286 °C(lit.)
Boiling point: 397-400 °C(lit.)
Density  1,68 g/cm3
vapor pressure  0Pa at 25℃
refractive index  1.6000 (estimate)
Flash point: 380 °C
solubility  Soluble in dimethyl sulfoxide, acetone, chloroform, ethyl ether, n-hexane and benzene.
form  Fine Powder
pka 5.45[at 20 ℃]
color  White to pale yellow
Water Solubility  decomposes
Sensitive  Moisture Sensitive
BRN  213583
InChIKey ANSXAPJVJOKRDJ-UHFFFAOYSA-N
LogP -2.03 at 21.5℃
CAS DataBase Reference 89-32-7(CAS DataBase Reference)
NIST Chemistry Reference 1,2,4,5-Benzenetetracarboxylic anhydride(89-32-7)
EPA Substance Registry System 1H,3H-Benzo[1,2-c:4,5-c']difuran-1,3,5,7-tetrone (89-32-7)

Description and Uses

Pyromellitic dianhydride is used as a monomer in the preparation of polyimide polymers such as kapton; thermoplastics such as polyesters, polyethers, plasticizers, and expoxy resins. It is involved in the preparation of high performance coatings due to its mechanical, thermal and oxidative stability properties. It acts as a curing agent for epoxy resins which find application in adhesives, coatings and molding powders. As an intermediate, it plays an important role in polyimide based materials like printed circuit boards, tape automated bonding and magnetic wire insulation.

Safety

Symbol(GHS) 
GHS05,GHS08
Signal word  Danger
Hazard statements  H317-H318-H334
Precautionary statements  P261-P272-P280-P284-P302+P352-P305+P351+P338
Hazard Codes  Xn
Risk Statements  41-42/43
Safety Statements  22-24-26-37/39
WGK Germany  1
RTECS  DB9300000
10-21
TSCA  Yes
HS Code  29173980
Hazardous Substances Data 89-32-7(Hazardous Substances Data)

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