dye|World dye variety

Name:C.I.Direct Red 21,C.I.23560 Molecular Structure: Double azo class Molecular Formula:C34H26N6Na2O6S2 Molecular Weight: 724.72 CAS Registry Number:6406-01-5

Name:C.I.Direct Red 20,C.I.15075 Molecular Structure: Single azo class Molecular Formula:C24H14ClN3Na2O7S3 Molecular Weight: 634.01 CAS Registry Number:5850-73-7

Name:C.I.Direct Red 18,C.I.22280 Molecular Structure: Double azo class Molecular Formula:C29H17N4Na3O10S2 Molecular Weight: 714.57 CAS Registry Number:6548-26-1

Name:C.I.Direct Red 17,C.I.22150 Molecular Structure: Double azo class Molecular Formula:C32H21N5Na2O7S2 Molecular Weight: 697.65 CAS Registry Number:2769-07-5

Name:C.I.Direct Red 16,C.I.27680 Molecular Structure: Double azo class Molecular Formula:C26H17N5Na2O8S2 Molecular Weight: 637.55 CAS Registry Number:6227-02-7