dye|World dye variety

Name:C.I.Acid Red 70,C.I.27155 Molecular Structure: Double azo class Molecular Formula:C22H14N4Na2O7S2 Molecular Weight: 556.48 CAS Registry Number:6226-74-0

Name:C.I.Acid Red 66,C.I.26905 Molecular Structure: Double azo class Molecular Formula:C22H14N4Na2O7S2 Molecular Weight: 556.48 CAS Registry Number:4196-99-0