6406-50-4

Basic information

• Product Name: 2-Hydroxy-5-[[4-[(1-hydroxy-5-sodiosulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]benzoic acid sodium salt
• Synonyms: 2-Hydroxy-5-[[4-[(1-hydroxy-5-sodiosulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]benzoic acid sodium salt;C.I.26750;C.I.Mordant Black 62;Diadem Chrome Black F New
• CAS NO: 6406-50-4
• Molecular Weight: 0
• Mol File: 6406-50-4.mol
• Article Data: 0

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 2-Hydroxy-5-[[4-[(1-hydroxy-5-sodiosulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]benzoic acid sodium salt(CAS DataBase Reference)
• NIST Chemistry Reference: 2-Hydroxy-5-[[4-[(1-hydroxy-5-sodiosulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]benzoic acid sodium salt(6406-50-4)
• EPA Substance Registry System: 2-Hydroxy-5-[[4-[(1-hydroxy-5-sodiosulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]benzoic acid sodium salt(6406-50-4)

Safety Data

• Hazardous Substances Data: 6406-50-4(Hazardous Substances Data)

Usage

Description

2-Hydroxy-5-[[4-[(1-hydroxy-5-sodiosulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]benzoic acid sodium salt is a complex organic compound with a unique molecular structure. It is characterized by its black color and its ability to dissolve in water to produce a purple-black solution. It is also soluble in ethanol to a certain extent, resulting in a sauce-red color, and slightly soluble in acetone. However, it is insoluble in other organic solvents. When dissolved in dye aqueous solution and reacted with concentrated hydrochloric acid, it turns pale red light brown, while the addition of concentrated sodium hydroxide solution results in a purple-black color. In concentrated sulfuric acid, it exhibits a brilliant green color, which turns pale red light brown upon dilution. In concentrated nitric acid, it appears as a wine color, which then turns orange.

Uses

Used in Textile Industry:
2-Hydroxy-5-[[4-[(1-hydroxy-5-sodiosulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]benzoic acid sodium salt is used as a dye in the textile industry for its ability to produce a range of colors depending on the solvent and reaction conditions. Its solubility in water and ethanol makes it suitable for dyeing fabrics, and its color-changing properties in the presence of acids and bases can be utilized to create unique color effects.
Used in Quality Testing:
2-Hydroxy-5-[[4-[(1-hydroxy-5-sodiosulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]benzoic acid sodium salt is also used in quality testing for various properties such as ironing fastness, light fastness, fulling, perspiration fastness, soaping, water, alkali, and acid resistance. The ISO standards for these properties range from 4 to 5, indicating that 2-Hydroxy-5-[[4-[(1-hydroxy-5-sodiosulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]benzoic acid sodium salt can be used to ensure that textiles meet the required quality standards.

Preparation

5-Amino-2-hydroxybenzoic acid diazotization, and Naphthalen-1-amine coupling, product to diazotization, and 5-Hydroxynaphthalene-1-sulfonic acid coupling.

Standard

Ironing Fastness

Alkali

Acid

ISO

5

InChI:InChI=1/C27H18N4O7S.2Na/c32-24-13-8-15(14-20(24)27(34)35)28-29-21-11-12-22(17-5-2-1-4-16(17)21)30-31-23-10-9-18-19(26(23)33)6-3-7-25(18)39(36,37)38;;/h1-14,32-33H,(H,34,35)(H,36,37,38);;/q;2*+1/p-2