dye|World dye variety

Name:C.I.Direct Brown 167,C.I.22770

Molecular Structure: Double azo class

C.I.Direct Brown 167,C.I.22770,CAS 13194-82-6,871.72,C39H28N7Na3O11S3,Benzo Cuprol Brown 3GL

Molecular Formula:C₃₉H₂₈N₇Na₃O₁₁S₃

Molecular Weight: 871.72

CAS Registry Number:13194-82-6

Manufacturing Methods : 2-Amino-5-(4-amino-3-barboxyphenyl)benzoic acid double nitriding, first with 6-(4-Hydroxy-3-methyl-1H-pyrazol-1-yl)naphthalene-2-sulfonic acid coupling, and then and N-(2-methoxyphenyl)-3-oxobutanamide coupling.

Properties and Applications:  yellow light brown. Soluble in water for yellow brown, slightly soluble in alcohol. The strong sulfuric acid in red orange for brown, with golden yellow diluted. The dye solution to join strong hydrochloric acid for yellow brown, have precipitation; With strong sodium hydroxide solution for yellow brown, a little precipitation.

List of Suppliers:

Benzo Cuprol Brown 3GL( Bayer Group )