dye|World dye variety

Name:C.I.Direct Brown 152,C.I.25370

Molecular Structure: Double azo class

C.I.Direct Brown 152,C.I.25370,CAS 6854-77-9,684.62,C25H22N10Na2O7S2,Para Fast Brown GR

Molecular Formula:C₂₅H₂₂N₁₀Na₂O₇S₂

Molecular Weight: 684.62

CAS Registry Number:6854-77-9

Manufacturing Methods : 1,3-Bis(4-amino-3-sulfophenyl)urea double nitriding, and Benzene-1,3-diamine (2 Moore) coupled.

Properties and Applications:  red light brown. Moderate soluble in water for golden yellow to orange, and adequate soluble in alcohol. The strong sulfuric acid for purple, for yellow brown after diluted. The dye solution to join strong hydrochloric acid for dark brown, have precipitation; Add thick sodium hydroxide solution discoloration.

List of Suppliers:

Para Fast Brown GR( Bayer Group )