dye|World dye variety

Name:C.I.Direct Black 40,C.I.31760 Molecular Structure: trisazo class Molecular Formula:C39H24N6Na2O7S Molecular Weight: 766.69 CAS Registry Number:6449-81-6

Name:C.I.Direct Black 38,C.I.30235 Molecular Structure: trisazo class Molecular Formula:C34H25N9Na2O7S2 Molecular Weight: 781.73 CAS Registry Number:1937-37-7

Name:C.I.Direct Black 36,C.I.31665 Molecular Structure: trisazo class Molecular Formula:C28H22N10Na2O7S2 Molecular Weight: 720.65 CAS Registry Number:6360-26-5

Name:C.I.Direct Black 34,C.I.35075 Molecular Structure: Multi-azo class Molecular Formula:C40H31N13Na2O7S2 Molecular Weight: 915.87 CAS Registry Number:6473-08-1

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