4′-benzophenone tetracarboxylic dianhydride 2421-28-5

english name: 3,3,4,4-benzophenonetetracarboxylic acid dianhydride common aliases: 4,4′-carbonyl diphthalic anhydride; 3,3′,4,4′-benzophenone tetracarboxylic dianhydride; 3,3′,4,4′-di benzophenone tetracarboxylic dianhydride; 3,3’4,4′-benzophenone tetracarboxylic dianhydride; ketone anhydride (btda) cas number: 2421-28-5 boiling point: 638.8±40.0 °c at 760 mmhg mdl number: n/a melting point: 218-222 °c(lit.) molecular formula: c17h6o7 flash point: 286.1±27.4 °c molecular weight: 322.225 density: 1.7±0.1 g/cm3 physical and…