6252-62-6

Basic information

• Product Name: Direct Brown 44
• Synonyms: disodium 4,4'-[1,3-phenylenebis[azo(4,6-diamino-3,1-phenylene)azo]]bis(benzenesulphonate);C.I.DirectBrown44;DirectBrown3G;Benzenesulfonic acid, 4,4'-[1,3-phenylenebis [azo(4,6-diamino-3,1-phenylene)azo]]bis-, disodium salt;4,4'-[1,3-Phenylenebis[azo(4,6-diamino-3,1-phenylene)azo]]bisbenzenesulfonic acid, disodium salt;Direct brown 44 (C.I. 35005);disodium 4-[2,4-bis(azanyl)-5-[3-[2,4-bis(azanyl)-5-(4-sulfonatophenyl)diazenyl-phenyl]diazenylphenyl]diazenyl-phenyl]diazenylbenzenesulfonate;disodium 4-[2,4-diamino-5-[3-[2,4-diamino-5-(4-sulfonatophenyl)azo-phenyl]azophenyl]azo-phenyl]azobenzenesulfonate
• CAS NO: 6252-62-6
• Molecular Formula: C30H24N12Na2O6S2
• Molecular Weight: 758.6979
• EINECS: 228-375-8
• Product Categories: Organics
• Mol File: 6252-62-6.mol
• Article Data: 0

Chemical Properties

• Appearance: /
• CAS DataBase Reference: Direct Brown 44(CAS DataBase Reference)
• NIST Chemistry Reference: Direct Brown 44(6252-62-6)
• EPA Substance Registry System: Direct Brown 44(6252-62-6)

Safety Data

• Hazardous Substances Data: 6252-62-6(Hazardous Substances Data)

Usage

Description

Direct Brown 44 is a brown dye that is soluble in water, ethanol, and acetone. It exhibits color variations when exposed to different chemical conditions, such as turning from brown to black in strong sulfuric acid and to orange brown when diluted. The addition of a 10% sodium hydroxide solution to the dye solution results in a more reddish hue.

Uses

Used in Textile Industry:
Direct Brown 44 is used as a dye for cellulose fibers in textile printing and dyeing processes. It provides coloration to the fabric, enhancing its appearance and visual appeal.
Used in Paper Industry:
Direct Brown 44 is used as a dye in paper printing, allowing for the creation of colored paper products with a brown hue.
Standard:
The performance of Direct Brown 44 is evaluated based on various standards, including acid resistance, alkali resistance, light fastness, soaping, water fading, and stain fading. According to the ISO and AATCC standards, Direct Brown 44 exhibits moderate to good performance in these categories, making it a suitable choice for various applications.

Preparation

2 moles of nitrous acid treatment with 3 moles of ?Benzene-1,3-diamine?dihydrochloride (This product may be based on the disazo dye mixture as the main ingredient, and commercial dyes are usually composed by a dihydrochloride). And its product ??(C.I. Basic Brown 1, C.I. 21000)?as coupling component and diazotized 4-Aminobenzenesulfonic acid (2 mol) coupling

Standard

Acid Resistance

Fading

Stain

ISO

4

AATCC

3-4

InChI:InChI=1/C30H26N12O6S2.2Na/c31-23-13-25(33)29(15-27(23)39-35-17-4-8-21(9-5-17)49(43,44)45)41-37-19-2-1-3-20(12-19)38-42-30-16-28(24(32)14-26(30)34)40-36-18-6-10-22(11-7-18)50(46,47)48;;/h1-16H,31-34H2,(H,43,44,45)(H,46,47,48);;/q;2*+1/p-2/b39-35+,40-36+,41-37+,42-38+;;