dye|World dye variety

Name:C.I.Vat Blue 48,C.I.73075

Molecular Structure: Indigo class

C.I.Vat Blue 48,C.I.73075,CAS 6417-56-7,735.64,C16H4Br6N2O2,Indigo MLB/6B

Molecular Formula:C₁₆H₄Br₆N₂O₂

Molecular Weight: 735.64

CAS Registry Number:6417-56-7

Manufacturing Methods :  (a) 3H-indol-3-one,2-(1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro- in chlorosulfonic acid bromide, (b) Indigo under pressure to use too much bromide bromide (With or without an inert solvent may be), its product bromide (mainly seven bromide Indigo) using bisulphite processing, remove unstable (mainly “type” bromide) bromide (GP 236902).

Properties and Applications: blue. Insoluble in Etanol. In concentrated sulfuric acid for blue, dilution after blue precipitation; In the basic insurance powder solution for yellow; In the acidic insurance powder solution for pale yellow. Dye aqueous solution with sodium hydroxide don’t change color.

List of Suppliers:

Indigo MLB/6B( Farbwerke vorm. Meister Lucius &Brtining )