Hot sale 2-Phenoxyethanol - Pyromellitic Dianhydride With CAS 89-32-7 – Unilong
Hot sale 2-Phenoxyethanol - Pyromellitic Dianhydride With CAS 89-32-7 – Unilong Detail:
The pyromellitic dianhydride (abbreviated as PMDA), which is mainly used for the synthesis of polyimide, because polyimide has excellent ultra-high heat resistance, acid and alkali resistance, excellent Because of its mechanical properties, electrical properties and dimensional stability, it is widely used in high-tech fields such as aviation, aerospace, microelectronics and atomic energy, which have strict requirements on material properties.
| Item |
Standard |
| Appearance |
White crystals |
| Melting point |
286℃-288℃ |
| Free acid contend |
≤0.5wt% |
| PURITY(%) |
≥99.5% |
Pyromellitic dianhydride (PMDA) is an important raw material in the organic synthesis industry, as well as a basic raw material for the development of new chemical materials and high value-added fine chemical products. It is mainly used for the production of polyimide monomers, and can also be used as a Curing agent for epoxy resin and cross-linking agent for polyester resin, used in the manufacture of phthalocyanine blue dye and some important derivatives, etc., and has a wide range of uses. Pyromellitic dianhydride, also known as homoanhydride, has a special molecular structure and can be used to manufacture materials with heat resistance, electrical insulation and chemical resistance, among which the most important use is as a monolayer of polyimide. It is synthesized with aromatic diamine to obtain polyimide plastic, but the purity of pyromellitic dianhydride is very high, which needs to be more than 99%.
25kgs/drum, 9tons/20’container
25kgs/bag, 20tons/20’container
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