2302-97-8

Basic information

• Product Name: disodium 8,8'-[[1,1'-biphenyl]-4,4'-diylbis(azo)]bis(7-hydroxynaphthalene-1-sulphonate)
• Synonyms: disodium 8,8'-[[1,1'-biphenyl]-4,4'-diylbis(azo)]bis(7-hydroxynaphthalene-1-sulphonate);C.I. Direct bordeaux R;CIDIRECTRED44
• CAS NO: 2302-97-8
• Molecular Formula: C32H20N4Na2O8S2
• Molecular Weight: 698.63274
• EINECS: 218-959-0
• Mol File: 2302-97-8.mol
• Article Data: 0

Chemical Properties

• Boiling Point: °Cat760mmHg
• Flash Point: °C
• Appearance: /
• Density: g/cm³
• CAS DataBase Reference: disodium 8,8'-[[1,1'-biphenyl]-4,4'-diylbis(azo)]bis(7-hydroxynaphthalene-1-sulphonate)(CAS DataBase Reference)
• NIST Chemistry Reference: disodium 8,8'-[[1,1'-biphenyl]-4,4'-diylbis(azo)]bis(7-hydroxynaphthalene-1-sulphonate)(2302-97-8)
• EPA Substance Registry System: disodium 8,8'-[[1,1'-biphenyl]-4,4'-diylbis(azo)]bis(7-hydroxynaphthalene-1-sulphonate)(2302-97-8)

Safety Data

• Hazardous Substances Data: 2302-97-8(Hazardous Substances Data)

Usage

Description

Disodium 8,8'-[[1,1'-biphenyl]-4,4'-diylbis(azo)]bis(7-hydroxynaphthalene-1-sulphonate) is a complex organic compound that exhibits a range of colors from dark red to blue light red violet. It is soluble in water, producing a red to red light purple product, and is slightly soluble in alcohol. When interacting with strong acids like sulfuric acid, it turns purple, and when diluted, it becomes light purple with a red hue. In nitric acid, it forms a red-orange solution. The dye solution reacts with strong hydrochloric acid to produce a navy color and forms a precipitate. When mixed with a thick sodium hydroxide solution, it turns red light brown and also precipitates.

Uses

Used in Dye Industry:
Disodium 8,8'-[[1,1'-biphenyl]-4,4'-diylbis(azo)]bis(7-hydroxynaphthalene-1-sulphonate) is used as a dye for various applications due to its ability to produce a range of colors when interacting with different substances. Its color-changing properties make it suitable for creating vibrant and distinctive hues in the dye industry.
Used in Chemical Analysis:
The compound's color-changing reactions with various acids and bases make it a useful tool in chemical analysis. It can be employed as an indicator in titrations and other analytical processes to determine the presence and concentration of specific substances.
Used in Research and Development:
Due to its unique properties and reactivity, disodium 8,8'-[[1,1'-biphenyl]-4,4'-diylbis(azo)]bis(7-hydroxynaphthalene-1-sulphonate) can be used in research and development for the creation of new dyes, pigments, and other chemical compounds. Its versatility in color production and interaction with various substances makes it a valuable resource for scientists and researchers in the field of chemistry.

Preparation

4-(4-Aminophenyl)benzenamine double nitriding, and 7-Hydroxynaphthalene-1-sulfonic acid (2 Moore) coupled.