Pyromellitic Dianhydride

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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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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 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

Hebei Mojin Biotechnology Co., Ltd

Product: Pyromellitic Dianhydride 89-32-7
Price: US $0.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 50000KG/month
Release date: 2023-08-24

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