Pyromellitic Dianhydride CAS#89-32-7

CAS Number: 89-32-7
Chemical Formula: C10H2O6
Synonyms:

1,2,4,5-Benzenetetracarboxylic 1,2:4,5-dianhydride
1,2,4,5benzenetetracarboxylic1,2:4,5dianhydride
1,2,4,5-benzenetetracarboxylic1,2:4,5-dianhydride

Appearance: White Powder

MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)

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Product Details

Pyromellitic Dianhydride CAS#89-32-7

Pyromellitic dianhydride (PMDA) is an acidic anhydride that can be used as a repair agent and as a chain extender in the formation of polyethylene terephthalate (PET) based chain extensions. It is mainly used in the production of thermoplastics and other coating applications.

Pyromellitic Dianhydride Chemical Properties

Melting point	283-286 °C(lit.)
Boiling point	397-400 °C(lit.)
bulk density	400-600kg/m3
density	1,68 g/cm3
vapor pressure	0Pa at 25℃
refractive index	1.6000 (estimate)
Fp	380 °C
storage temp.	2-30°C
solubility	Soluble in dimethyl sulfoxide, acetone, chloroform, ethyl ether, n-hexane and benzene.
pka	5.45[at 20 ℃]
form	Fine Powder
color	White to pale yellow
Water Solubility	decomposes
Sensitive	Moisture Sensitive
BRN	213583
InChI	1S/C10H2O6/c11-7-3-1-4-6(10(14)16-8(4)12)2-5(3)9(13)15-7/h1-2H
InChIKey	ANSXAPJVJOKRDJ-UHFFFAOYSA-N
SMILES	O=C1OC(=O)c2cc3C(=O)OC(=O)c3cc12
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)

Safety Information

Hazard Codes	Xn
Risk Statements	41-42/43
Safety Statements	22-24-26-37/39
WGK Germany	1
RTECS	DB9300000
F	10-21
Autoignition Temperature	630°C
TSCA	TSCA listed
HS Code	29173980
Storage Class	11 - Combustible Solids
Hazard Classifications	Eye Dam. 1 Resp. Sens. 1 Skin Sens. 1
Hazardous Substances Data	89-32-7(Hazardous Substances Data)

Product Application Of Pyromellitic Dianhydride CAS#89-32-7

Pyromellitic dianhydride (PMDA) has been used extensively as an important monomer in the preparation of a variety of thermoplastics such as polyesters, polycarbonates, polyethers polyethers, plasticizersplasticizers, expoxy resins, etc. Moreover, it is also useful in the preparation of high performance coatings that have been widely employed in many fields in our daily life beacuase of its excellent thermal, oxidative stability and excellent mechanical properties.
Pyromellitic dianhydride (PMDA) is one of several highly reactive acid anhydrides and used extensively in the production of thermoplastics and high-performance coatings. Anhydrides including PMDA are respiratory irritants and immediate-type sensitisers. Some anhydrides have been associated with occupational asthma. PMDA has also been related to occupational asthma.

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