Identification Properties Safety Data Specifications & Other Information Links Identification CAS Number 2421-28-5 Name 3,3′,4,4′-Benzophenonetetracarboxylic dianhydride Synonyms 1,3-Isobenzofurandione, 5,5′-carbonylbis- [ACD/Index Name] 4,4′-CARBONYLBIS(PHTHALIC ANHYDRIDE) 5,5′-Carbonylbis(2-benzofuran-1,3-dion) [German] [ACD/IUPAC Name] 5,5′-Carbonylbis(2-benzofuran-1,3-dione) [ACD/IUPAC Name] 5,5′-Carbonylbis(2-benzofurane-1,3-dione) [French] [ACD/IUPAC Name] Benzophenonetetracarboxylic acid dianhydride Benzophenone-tetracarboxylic-dianhydride [2421-28-5] 101505-15-1 [RN] 160903-84-4 [RN] 163915-23-9 [RN] 174612-63-6 [RN] 219-348-1 [EINECS] 2421-28-5 [RN] 3, 3′,4,4′-Benzophenonetetracarboxylic dianhydride 3,3′,4,4′-Benzophenonetetracarboxylic…