dye|World dye variety

Name:C.I.Direct Black 90,C.I.21530 Molecular Structure: Double azo class Molecular Formula:C22H17N7Na2O7S2 Molecular Weight: 601.52 CAS Registry Number:6449-77-0

Name:C.I.Direct Black 87,C.I.24110 Molecular Structure: Double azo class Molecular Formula:C34H26N6Na2O8S2 Molecular Weight: 756.72 CAS Registry Number:8015-03-0

Name:C.I.Direct Black 86,C.I.24115 Molecular Structure: Double azo class Molecular Formula:C34H26N6Na2O9S2 Molecular Weight: 772.72 CAS Registry Number:6449-34-9

Name:C.I.Direct Black 83,C.I.31850 Molecular Structure: trisazo class Molecular Formula:C42H26N8Na4O14S4 Molecular Weight: 1086.92 CAS Registry Number:6837-80-5

Name:C.I.Direct Black 80,C.I.31600 Molecular Structure: trisazo class Molecular Formula:C36H23N8Na3O11S3 Molecular Weight: 908.78 CAS Registry Number:8003-69-8