8003-51-8

Basic information

• Product Name: C.I. Direct Brown 46
• Synonyms: C.I. Direct Brown 46
• CAS NO: 8003-51-8
• Molecular Formula: C39H27 N7 O10 S2 . 3 Na
• Molecular Weight: 886.79
• Mol File: 8003-51-8.mol
• Article Data: 0

Chemical Properties

• Appearance: /
• CAS DataBase Reference: C.I. Direct Brown 46(CAS DataBase Reference)
• NIST Chemistry Reference: C.I. Direct Brown 46(8003-51-8)
• EPA Substance Registry System: C.I. Direct Brown 46(8003-51-8)

Safety Data

• Hazardous Substances Data: 8003-51-8(Hazardous Substances Data)

Usage

Description

C.I. Direct Brown 46 is a dark brown colored dye that exhibits an olive green shade in light and a navy shade when dissolved in strong sulfuric acid. It is soluble in water for a light olive shade and in ethanol. When the dye solution is mixed with strong hydrochloric acid, it forms a gray light purple precipitate, and when mixed with a thick sodium hydroxide solution, it forms an orange brown precipitate.

Uses

Used in Textile Industry:
C.I. Direct Brown 46 is used as a dye for coloring textiles due to its ability to produce a range of shades from light olive to navy.
Used in Leather Industry:
C.I. Direct Brown 46 is used as a dye for coloring leather products, providing a dark brown color.
Used in Paper Industry:
C.I. Direct Brown 46 is used as a dye for coloring paper products, offering a consistent dark brown shade.
Standard:
C.I. Direct Brown 46 has a standard rating of 3-4 for acid resistance, 3 for alkali resistance, 2-3 for light fastness, and 2-3 for both soaping and water fading.

Preparation

4-(4-Aminophenyl)benzenamine double nitriding, first coupled with 2-Hydroxybenzoic acid, again with 5-Aminonaphthalene-2-sulfonic acid and 8-Aminonaphthalene-2-sulfonic acid coupling, its product to diazo, in alkaline conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid?coupling.

Standard

Acid Resistance

Fading

Stain

ISO

3-4