dye|World dye variety

Name:C.I.Direct Blue 98,C.I.23155

Molecular Structure: Double azo class

C.I.Direct Blue 98,C.I.23155,CAS 6656-03-7,923.79,C38H24N5Na3O13S3,Blue LL,Direct Supra Blue MBGL,Sirius Supra Blue FBGLN,Tertrodirect Light Blue BGL

Molecular Formula:C₃₈H₂₄N₅Na₃O₁₃S₃

Molecular Weight: 923.79

CAS Registry Number:6656-03-7

Manufacturing Methods : 3,3′-Dimethoxylbenzidine double nitriding, and   8-Hydroxynaphthalene-1,6-disulfonic acid and 4-Hydroxy-7-(phenylamino)naphthalene-2-sulfonic acid, and then put three pulpous state dye and copper sulfate sodium acetate and water mixing 1.5 days and nights form a tight mixture, again in the 120 ~ 125 ℃ conditions vacuum drying. In this process, the two methoxy groups are replaced by hydroxyl groups.

Properties and Applications: blue. Soluble in water for red light blue, soluble in ethanol. The strong sulfuric acid for green light blue, diluted for dark purple. The dye solution to join strong hydrochloric acid for purple, have precipitation; Add thick sodium hydroxide solution have red light blue precipitation.

List of Suppliers:

ABCOL Blue LL ( Abbey Color Inc. )

ACDI Light Blue 3J 300%(Aakash Chemicals & Dyestuffs Inc)

Best Direct Supra Blue MBGL( Oriental Giant Dyes and Chemical Ind Corp )

Direct Blue L (Classic Dyestuffs Inc)

Direct Brilliant Blue L ( Global Colors Inc. )

Dyrite Blue LLU ( Rite Industries Inc. )

Fabrifast Navy WRA Cone.( Fabricolor Inc. )

Intralite Brill Blue L 300% (Classic Dyestuffs Inc)

Leadirect Blue LLU 100/200% ( Leadertech Colors Inc. )

Orcolitefast Blue LUL ( Organic Dyestuffs Corp )

Permalite Brill Blue L ( Standard Dyes )

Pyrazol Light Blue LUL( Clariant GmbH )

Sirius Supra Blue FBGLN ( Bayer Group )

Tertrodirect Light Blue BGL(Yorkshire Group pic)