What is Cyclobutane-1,2,3,4-tetracarboxylic dianhydride? Cyclobutane-1,2,3,4-tetracarboxylic dianhydride ( CBDA ) is an organic dianhydride compound with the molecular formula C₈H₄O₆ , consisting of a cyclobutane ring and four carboxyl groups. Due to its symmetric dianhydride structure and unique alicyclic backbone, CBDA plays a significant role in the synthesis of polyimide materials . Key Parameters of Cyclobutane-1,2,3,4-tetracarboxylic dianhydride Chemical Name : Cyclobutane-1,2,3,4-tetracarboxylic dianhydride Abbreviation : CB D A Molecular Formula : C ₈ H ₄ O ₆ Molecular Weight : 196.1 1 g/mol CAS No. : 4415-87-6 Appearance : White to off-white crystalline powder Melting Point : 290 – 300 ° C (decomposes) Solubility : Insoluble in water; soluble in polar organic solvents (e.g., NMP, DMF) These parameters are essential for both research applications and industrial production , providing a reliable reference for material selection. Functions of Cyclob...