dye|World dye variety

Name:C.I.Direct Red 98,C.I.29230

Molecular Structure: Double azo class

C.I.Direct Red 98,C.I.29230,CAS 6661-33-2,946.83,C33H24N8Na2O15S4,Direct Supra Light Violet MN2RL

Molecular Formula:C₃₃H₂₄N₈Na₂O₁₅S₄

Molecular Weight: 946.83

CAS Registry Number:6661-33-2

Manufacturing Methods : 3-Amino-4-hydroxybenzenesulfonamide (2 Moore) diazo, and N,N’-bis(4-hydroxy-2-sulfonaphthalene-7-yl)urea coupling, and then turn it into copper complex.

Properties and Applications: red to Claret. Soluble in water for red light purple. The strong sulfuric acid in red for Violet, diluted becomes shallow. The dye solution to join strong hydrochloric acid have red light purple precipitation; Add sodium hydroxide to red light purple.

List of Suppliers:

Direct Supra Light Violet MN2RL( Industria Chimica Dott  )