dye|World dye variety

Name:C.I.Acid Black 31,C.I.17580 Molecular Structure: Single azo class Molecular Formula:C23H17N4NaO7S Molecular Weight: 516.46 CAS Registry Number:6222-55-5

Name:C.I.Acid Black 29,C.I.30336 Molecular Structure: trisazo class Molecular Formula: Molecular Weight: CAS Registry Number:12217-14-0

Name:C.I.Acid Black 28,C.I.20500 Molecular Structure: Double azo class Molecular Formula:C23H16N6Na2O9S2 Molecular Weight: 630.52 CAS Registry Number:5850-41-9

Name:C.I.Acid Black 27,C.I.26310 Molecular Structure: Double azo class Molecular Formula:C30H19N5Na2O6S2 Molecular Weight: 655.61 CAS Registry Number:6548-25-0

Name:C.I.Acid Black 26:2,C.I.26690 Molecular Structure: Double azo class Molecular Formula:C32H21N5Na2O7S2 Molecular Weight: 697.65 CAS Registry Number:6406-45-7