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Pyromellitic Dianhydride

Product Name
Pyromellitic Dianhydride
CAS No.
89-32-7
Chemical Name
Pyromellitic Dianhydride
Synonyms
PMDA;Pyromellitic anhydride;Dicarboxylic anhydride;1,2,4,5-BENZENETETRACARBOXYLIC ANHYDRIDE;1,2,4,5-Benzenetetracrboxylicdianhydride;1,2,4,5-BENZENETETRACARBOXYLIC DIANHYDRIDE;PyromeL;BDFtetron;Benzo[1,2-c;itic dianhydride
CBNumber
CB5267853
Molecular Formula
C10H2O6
Formula Weight
218.12
MOL File
89-32-7.mol
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Pyromellitic Dianhydride Property

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)
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Safety

Hazard Codes 
Xn
Risk Statements 
41-42/43
Safety Statements 
22-24-26-37/39
WGK Germany 
1
RTECS 
DB9300000
F 
10-21
TSCA 
Yes
HS Code 
29173980
Hazardous Substances Data
89-32-7(Hazardous Substances Data)
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H317May cause an allergic skin reaction

H318Causes serious eye damage

H334May cause allergy or asthma symptoms or breathing difficulties if inhaled

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P272Contaminated work clothing should not be allowed out of the workplace.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P284Wear respiratory protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
412287
Product name
Pyromellitic dianhydride
Purity
97%
Packaging
100g
Price
$67.3
Updated
2024/03/01
Sigma-Aldrich
Product number
412287
Product name
Pyromellitic dianhydride
Purity
97%
Packaging
500g
Price
$220
Updated
2024/03/01
TCI Chemical
Product number
B0040
Product name
Pyromellitic Dianhydride
Purity
>98.0%(T)
Packaging
25g
Price
$18
Updated
2024/03/01
TCI Chemical
Product number
B0040
Product name
Pyromellitic Dianhydride
Purity
>98.0%(T)
Packaging
100g
Price
$35
Updated
2024/03/01
Alfa Aesar
Product number
045788
Product name
Pyromellitic dianhydride, 98%
Packaging
100g
Price
$62.65
Updated
2024/03/01
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Pyromellitic Dianhydride Chemical Properties,Usage,Production

Chemical Properties

White powder. Soluble in some organic solvents; hydrolyzes to the acid when exposed to moisture.

Uses

Pyromellitic dianhydride (PMDA) is employed as a curing agent for epoxy agent resins used for casting, laminating, the manufacture of moulding powders, adhesives and coatings.

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.

Preparation

Pyromellitic Dianhydride is prepared by gas-phase oxidation of 1,2,4,5-tetramethylbenzene (or related tetrasubstituted benzene derivatives). An idealized equation is:
C6H2(CH3)4 + 6 O2 → C6H2(C2O3)2 + 6 H2O
In the laboratory, it can be prepared by dehydration of pyromellitic acid using acetic anhydride.

Application

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.

General Description

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.

Hazard

Skin irritant.

Flammability and Explosibility

Not classified

Purification Methods

Crystallise the dianhydride from ethyl methyl ketone or dioxane. Dry, and sublime it in vacuo.[Beilstein 19 H 196, 19/5 V 407.]

Pyromellitic Dianhydride Preparation Products And Raw materials

Raw materials

1,2,4-Trimethylbenzene N-PROPYLBENZENE P-XYLENE m-Xylene Chromic acid Anthracene tetramethylbenzene 1,2,4,5-Tetramethylbenzene

Preparation Products

PYROMELLITIC DIIMIDE Polyimide film 1,2,4,5-BENZENETETRACARBOXAMIDE 1,2,4,5-TETRACYANOBENZENE
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Pyromellitic Dianhydride Suppliers

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View Lastest Price from Pyromellitic Dianhydride manufacturers

Jinan Finer Chemical Co., Ltd
Product
Pyromellitic dianhydride 89-32-7
Price
US $0.00/Kg/Drum
Min. Order
1KG
Purity
99%
Supply Ability
500mt/year
Release date
2021-11-08
Hebei Weibang Biotechnology Co., Ltd
Product
Pyromellitic Dianhydride 89-32-7
Price
US $10.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
10 mt
Release date
2024-11-19
Hebei Yanxi Chemical Co., Ltd.
Product
Pyromellitic Dianhydride 89-32-7
Price
US $0.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
20tons
Release date
2023-09-11

89-32-7, Pyromellitic DianhydrideRelated Search:

Glutaric anhydride Erythromycin Estolate Allylbenzene Di-tert-butyl dicarbonate Succinic anhydride 3,3',4,4'-Biphenyltetracarboxylic dianhydride Pyromellitic acid Phthalic anhydride Ethylbenzene 3,4,9,10-Perylenetetracarboxylic dianhydride Benzene 4,4'-Oxydiphthalic anhydride CIS-BUTENEDIOIC ANHYDRIDE PYROMELLITIC DIIMIDE Acetic anhydride Dimethyl terephthalate Methyl 4-formylbenzoate m-Phthalaldehyde Pyromellitic Anhydride

  • 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
  • 1,2,4,5-Benzenetetracrboxylicdianhydride
  • pyromelliticacidanhydride
  • pyromelliticaciddianhydride
  • Pyromelliticanhydride
  • 1,2,4,5-BENZENETETRACARBOXYLIC ANHYDRIDE
  • 1,2,4,5-BENZENETETRACARBOXYLIC DIANHYDRIDE
  • BENZENE-1,2,4,5-TETRACARBOXYLIC DIANHYDRIDE
  • BENZENE-1,2,4,5-TETRACARBOXYLIC 1,2,4,5-DIANHYDRIDE
  • PMDA
  • PYROMELLITIC DIANHYDRIDE
  • 1,2,4,5-Benzenetetracarboxylic anhydride,99%
  • 1, 2, 4, 5-Benzenetetracarboxylic acid anhydride
  • TIMTEC-BB SBB008218
  • 1,2,3,4-Benzenetetracarboxylic dianhydride
  • PYROMELLITIC DIANHYDRIDE (PMDA)
  • 1,2,4,5-BENZENETETRACARBOXYLIC DIANHYDRIDE 97+%
  • PYRYMELLITIC DIANHYDRIDE (PMDA)
  • pyromellitic dianhydride, milled
  • Pyromellitic dianhydride, [1,2,4,5-Benzenetetracarboxylic dianhydride]
  • 1,2,4,5-BENZENE TETRACARBOXYLIC DIANHYDRIDE (PMDA, PYROMELLITIC DIANHYDRIDE)
  • ,2,4,5-BENZENETETRACARBOXYLICANHYDRIDE
  • PYROMELLITIC DIANHYDRIDE (1,2,4,5-BENZENETETRACARBOXYLIC ANHYDRIDE)
  • 4,5-c]difuran-1,3,5,7-tetraone
  • BDFtetron
  • Piromellitic dianhydride
  • Furo[3,4-f][2]benzoxole-1,3,5,7-tetrone
  • 1,2,4,5-Benzenetetracarboxylic acid 1,2:4,5-dianhydride
  • Terephthalic acid anhydride
  • benzene-1,2:4,5-tetracarboxylic dianhydride benzene-1,2:4,5-tetracarboxylic dianhydride pyromellitic dianhydride
  • 1,2,4,5-BENENETETRACARBOXYLIC ANHYDRIDE
  • Benzene-1,2,4,5-tetracarboxylic dianhydride, PMDA
  • 1,2,3,4-Benzetetracarboxylic dianhydride
  • PYRROMELITICACIDDIANHYDRIDE
  • benzenetetracarboxylic anhydride
  • itic dianhydride
  • PyromeL
  • 1h,3h-benzo(1,2-c:4,5-c’)difuran-1,3,5,7-tetrone
  • 1H,3H-Benzo[1,2-c,4,5-c’]difuran-1,3,5,7-tetrone
  • 1H,3H-Benzo[1,2-c:4,5-c']difuran-1,3,5,7-tetrone
  • 1H,3H-Benzo[1,2-c:4,5-c’]difuran-1,3,5,7-tetrone
  • Benzo[1,2-c:4,5-c']difuran-1,3,5,7-tetraone
  • 1,2,4,5-BENZENETETRACARBOXYLIC-1,2:4,5-D
  • 1,3-dioxo-1,3-dihydroisobenzofuran-5,6-dicarboxylic acid
  • Pyromellitic dianhydride ,99.5%
  • Pyromellitic dianhyd
  • Benzo[1,2-c
  • Pyromellitic acid anhydride
  • Pyromellitic acid dianhydride
  • Pyromellitic anhydride
  • pyromellitic1,2:4,5-dianhydride
  • Pyromellitic Dianhydride (purified by sublimation)
  • Pyromellitic dianhydride( PMDA) ,crystal,99.5%
  • Pyromellitic dianhydride( PMDA) ,powder,99.5%
  • 1,2,4,5-Benzenetetracarboxylic anhydride, 99% 100GR
  • 1,2,4,5-Benzenetetracarboxylic anhydride, 99% 500GR