dye|World dye variety

Name:C.I.Direct Black 32,C.I.35440 Molecular Structure: Multi-azo class Molecular Formula:C48H40N13Na3O13S3 Molecular Weight: 1172.08 CAS Registry Number:6428-38-2

Name:C.I.Direct Black 30,C.I.23675 Molecular Structure: Double azo class Molecular Formula:C36H28N6Na2O8S2 Molecular Weight: 782.75 CAS Registry Number:6459-98-9

Name:C.I.Direct Black 29,C.I.22580 Molecular Structure: Double azo class Molecular Formula:C32H22N6Na2O8S2 Molecular Weight: 728.66 CAS Registry Number:3626-23-1

Name:C.I.Direct Black 28,C.I.35260 Molecular Structure: Multi-azo class Molecular Formula:C36H31N13Na2O7S2 Molecular Weight: 867.83 CAS Registry Number:6745-67-1

Name:C.I.Direct Black 27,C.I.31810 Molecular Structure: trisazo class Molecular Formula:C38H25N8Na3O12S3 Molecular Weight: 950.82 CAS Registry Number: