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Pyromellitic dianhydride is an organic compound with the formula C6H2(C2O3)2.
P 2795 (OTTO) Pyromellitic dianhydride Cas no 89-32-7 - used as a monomer in the preparation of polyimide polymers such as kapton; thermoplastics such as polyesters, polyethers, plasticizers, and expoxy resins.