dye|World dye variety

Name:C.I.Direct Black 71,C.I.25040 Molecular Structure: Double azo,Copper complexes Molecular Formula: Molecular Weight: CAS Registry Number:1325-32-2

Name:C.I.Direct Black 56,C.I.34170 Molecular Structure: trisazo class Molecular Formula:C36H22N7Na3O10S3 Molecular Weight: 877.77 CAS Registry Number:8003-57-4

Name:C.I.Direct Black 51,C.I.27720 Molecular Structure: Double azo class Molecular Formula:C27H17N5Na2O7S Molecular Weight: 601.5 CAS Registry Number:34977-63-4

Name:C.I.Direct Black 49,C.I.34155 Molecular Structure: trisazo class Molecular Formula:C37H22N7Na3O11S2 Molecular Weight: 873.71 CAS Registry Number:6473-15-0

Name:C.I.Direct Black 48,C.I.34000 Molecular Structure: trisazo class Molecular Formula:C33H22N8Na2O7S Molecular Weight: 720.62 CAS Registry Number:6771-92-2