dye|World dye variety

Name:C.I.Direct Blue 53,C.I.23860

Molecular Structure: Double azo class

C.I.Direct Blue 53,C.I.23860,CAS 314-13-6,960.81,C34H24N6Na4O14S4,Geigy Blue,Evans Blue

Molecular Formula:C₃₄H₂₄N₆Na₄O₁₄S₄

Molecular Weight: 960.81

CAS Registry Number:314-13-6

Manufacturing Methods :  3,3′-Dimethylbenzidine double nitriding, in alkaline conditions and 4-Amino-5-hydroxynaphthalene-1,3-disulfonic acid (2 Moore) coupled.

Properties and Applications: dark green light blue. Soluble in water for bright blue. The strong sulfuric acid for blue-ray green, diluted for light yellow. The dye solution to join hydrochloric acid as bright blue; Add sodium hydroxide solution for the purple and red.

List of Suppliers:

Evans Blue( Simpsons (UK) Ltd )

Geigy Blue( Ciba Specialty Chemicals Inc )