2,2'-h  
                                                            2,2'-hCAS No.: 3736-77-4

                                                            Description: A white or almost white crystalline powder

                                                            Loss on drying: 0.5%

                                                            Residue on ignition: 0.1%

                                                            Assay (HPLC): 99.0%

                                                             

                                                                 
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