Pyromellitic Dianhydride CAS# 89-32-7
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Chemical Name: Pyromellitic Dianhydride
CAS No.: 89-32-7
Molecular Fomula: ：C10H2O6
Molecular weight：218.12
Appearance:white powder
Sample：Available
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Description of Benzenetetracarboxylic
- Pyromellitic dianhydride is an organic compound with the formula C6H2(C2O3)2. It is the double carboxylic acid anhydride that is used in the preparation of polyimide polymers such as Kapton. It is a white solid.
It is prepared by gas-phase oxidation of 1,2,4,5-tetramethylbenzene (or related tetrasubstituted benzene derivatives). An idealized equation is:
Basic Info of Benzenetetracarboxylic
| Chemical Name | 1,2,4,5-Benzenetetracarboxylic anhydride |
| Synonyms | 1H,3H-Benzo[1,2-c:4,5-c‘]difuran-1,3,5,7-tetrone;benzene-1,2,4,5-tetracarboxylic dianhydride;BDFtetron;Pyromellitic anhydride;Piromellitic dianhydride;Expand |
| CAS No. | 89-32-7 |
| Molecular Formula | C10H2O6 |
| Molecular Weight | 218.11900 |
| PSA | 94.56000 |
| LogP | -0.50460 |
| RTECS | DB9300000 |
| Safety Statements | S22-S24-S26-S37/39 |
| HS Code | 2917399090 |
| WGK Germany | 1 |
| Risk Statements | R41; R42/43 |
| Hazard Codes | Xn |
| Signal Word | Danger |
| Hazard Declaration | H317; H318; H334 |
| Caution Statement | P261; P280; P284; P304 + P340; P305 + P351 + P338 + P310 |
| Symbol | GHS05, GHS08 |
| Appearance & Physical State | White powder |
| Density | 1.68 |
| Boiling Point | 397-400ºC |
| Melting Point | 283-287ºC |
| Flash Point | 380ºC |
| Refractive Index | 1.708 |
| Water Solubility | decomposes |
| Stability | Stable under normal temperatures and pressures. |
| Storage Condition | Store in a cool, dry place. Store in a tightly closed container. |
| MDL number | MFCD00005005 |
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What is Pyromellitic Dianhydride ?
- With the progress of science and technology and the development of society, chemical products have invariably permeated our daily lives, in medicine, food, cosmetics, electronics, industry, and other areas, becoming an essential part of our lives. One such product is Pyromellitic Dianhydride which has developed particularly rapidly in recent years. Do you know about Pyromellitic Dianhydride?
- The official answer：The English name of PyromelliticDianhydride (abbreviated as PMDA, the same below) is mainly used in the synthesis of polyimide, which is widely used in the high-tech fields of aviation, aerospace, microelectronics and atomic energy, etc. with demanding material properties due to its excellent ultra-high heat resistance, acid and alkali resistance, excellent mechanical properties, electrical properties, and dimensional stability.
What’s the application of Pyromellitic Dianhydride ?
- Homophthalic tetracarboxylic dianhydride (PMDA) is an important raw material for the organic synthesis industry, and also a basic raw material for the development of new chemical materials and high value-added fine chemicals, mainly used as a monomer for the production of polyimide, in addition, it can also be used as a curing agent for epoxy resins and cross-linking agent for polyester resins, for the manufacture of phthalocyanine blue dyes and some important derivatives, etc. It has a wide range of uses. Homophthalic tetracarboxylic dianhydride, also known as homophthalic anhydride, has a special molecular structure and can be used to manufacture heat-resistant, electrically insulating and chemical-resistant materials, of which the most important use is as a monomer of polyimide, synthesized with aromatic diamines to make polyimide plastics, but to homophthalic tetra is used to manufacture polyimide films, polyimide resins, powder coating matting agents, advanced electrical insulation materials used for The main raw material for the manufacture of polyimide heat-resistant engineering plastics and insulating film; can be used as epoxy resin curing agent, stabilizer and dye synthesis raw materials for the manufacture of polyimide resin, high temperature resistant electric insulation paint, PVC plasticizer, synthetic resin cross-linking agent and epoxy resin curing agent, also used in the manufacture of phthalocyanine blue dye and other formic acid dianhydride purity requirements are very high, need to reach 99% or more.
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