o-Cl-HABI Chemical Name: 2,2'-Bis(2-dichlorophenyl)-4,4'5,5'-tetraphenyl-1,2'-biimidazole Synonyms: C42H28CL2N4 Molecular formula: C42H28CL2N4 Molecular Weight: 659.62 CAS No: 1707-68-2 Specification (1) Appearance: Slight yellow green crystal powder (2) Assay no less 99% (HPLC) (3) Melting point: 199-202 ℃ (4) LOD no more 0.5% (5) Ash no more 0.1%