6388-26-7

Basic information

• Product Name: Direct Green 26
• Synonyms: Benzoic acid, 2-hydroxy-5-[[4-[[4-[[8-hydroxy-7-[[4-[(8-hydroxy-3,6-disulfo-1-naphthalenyl)azo]-2-methoxy-5-methylphenyl]azo]-3,6-disulfo-1-naphthalenyl]amino]-6-(phenylamino)-1,3,5-triazin-2-yl]amino]phenyl]azo]-, pentasodium salt;C.I.DirectGreen26;DirectFastgreenBLE;Benzoic acid, 2-hydroxy-5-4-4-8-hydroxy-7-4-(8-hydroxy-3,6-disulfo-1-naphthalenyl)azo-2-methoxy-5-methylphenylazo-3,6-disulfo-1-naphthalenylamino-6-(phenylamino)-1,3,5-triazin-2-ylaminophenylazo-, pentasodium salt;Chlorantine Fast Green BLL;Amanil Fast Green BLC;C.I.Direct Green 26(34045);Diazol Light Green BL,BMA
• CAS NO: 6388-26-7
• Molecular Formula: C50H33N12Na5O18S4
• Molecular Weight: 1333.07547
• EINECS: 228-995-9
• Product Categories: Organics
• Mol File: 6388-26-7.mol
• Article Data: 0

Chemical Properties

• Appearance: /
• Density: 1.413[at 20℃]
• Water Solubility: 4.38g/L at 20℃
• CAS DataBase Reference: Direct Green 26(CAS DataBase Reference)
• NIST Chemistry Reference: Direct Green 26(6388-26-7)
• EPA Substance Registry System: Direct Green 26(6388-26-7)

Safety Data

• Hazardous Substances Data: 6388-26-7(Hazardous Substances Data)

Usage

Description

Direct Green 26 is a blue light green dye that is soluble in water, with a solubility of 20 g/L at temperatures between 80-85°C. It is insoluble in organic solvents and exhibits a yellow green color when treated with strong sulfuric acid. Upon dilution, it turns dark blue and becomes light yellow green when reduced with zinc and ammonia. Direct Green 26 is sensitive to the presence of iron ions, which can cause a dark color.

Uses

Used in Textile Industry:
Direct Green 26 is used as a dye for cotton, viscose, silk, and PVA/rayon blended fabrics. It is suitable for both dyeing and printing processes, providing a vibrant green color to the fabrics.
Used in Leather Industry:
Direct Green 26 is used in the leather industry for coloring, offering a consistent and long-lasting green hue to the leather products.
Used in Paper Industry:
In the paper industry, Direct Green 26 is used for coloring paper products, providing a distinct green shade that enhances the appearance of the paper.
Used in Regenerated Cellulose Film Industry:
Direct Green 26 is also used in the production of regenerated cellulose film, where it imparts a green color to the film, making it suitable for various applications.
Standard:
The performance of Direct Green 26 is evaluated based on its acid resistance, alkali resistance, light fastness, soaping, water fading, and stain fading properties. The ISO and AATCC ratings for these properties are as follows:
Acid Resistance: ISO 3, AATCC 4
Alkali Resistance: ISO 4, AATCC 3
Light Fastness: ISO 6, AATCC 5
Soaping: ISO 4, AATCC 4
Water Fading: ISO 4, AATCC 4
Stain Fading: Not provided
Stain: Not provided

Preparation

2,4,6-Trichloro-1,3,5-triazine in turn and (1) 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid, (2) 4-Nitrobenzenamine diazo, and 2-Hydroxybenzoic acid coupling, and then to restore the azo dyes, (3) aniline for condensation, and for this coupling components (A), 4-Amino-5-hydroxynaphthalene-2,7-disulfonic aciddiazo, and 2-Amino-4-methylanisole coupling, its product to diazo, and the generation of coupling components (A) coupled.

Flammability and Explosibility

Nonflammable

Standard

Acid Resistance

Fading

Stain

ISO

3

AATCC

4

InChI:InChI=1/C50H38N12O18S4.5Na/c1-24-14-36(41(80-2)23-35(24)59-61-38-21-32(82(71,72)73)15-25-16-33(83(74,75)76)22-40(64)43(25)38)60-62-45-42(84(77,78)79)18-26-17-31(81(68,69)70)20-37(44(26)46(45)65)53-50-55-48(51-27-6-4-3-5-7-27)54-49(56-50)52-28-8-10-29(11-9-28)57-58-30-12-13-39(63)34(19-30)47(66)67;;;;;/h3-23,63-65H,1-2H3,(H,66,67)(H,68,69,70)(H,71,72,73)(H,74,75,76)(H,77,78,79)(H3,51,52,53,54,55,56);;;;;/q;5*+1/p-5