6-Hydroxy-2-[3-[(1-hydroxy-4-sodiosulfo-2-naphthalenyl)azo]phenyl]-7-phenylazo-1H-naphth[1,2-d]imidazole-8-sulfonic acid sodium salt

CAS No.
6406-48-0
Chemical Name:
6-Hydroxy-2-[3-[(1-hydroxy-4-sodiosulfo-2-naphthalenyl)azo]phenyl]-7-phenylazo-1H-naphth[1,2-d]imidazole-8-sulfonic acid sodium salt
Synonyms
C.I.26720;Direct Red 57;C.I.Direct Red 57;Benzo Scarlet FBS;C.I.Direct Red 57:C.I.26720;6-Hydroxy-2-[3-[(1-hydroxy-4-sodiosulfo-2-naphthalenyl)azo]phenyl]-7-phenylazo-1H-naphth[1,2-d]imidazole-8-sulfonic acid sodium salt
CBNumber:
CB82355654
Molecular Formula:
Molecular Weight:
0
MDL Number:
MOL File:
6406-48-0.mol

6-Hydroxy-2-[3-[(1-hydroxy-4-sodiosulfo-2-naphthalenyl)azo]phenyl]-7-phenylazo-1H-naphth[1,2-d]imidazole-8-sulfonic acid sodium salt Chemical Properties,Uses,Production

Preparation

aniline diazo, and 2-(3-Aminophenyl)-6-hydroxynaphtho[2,1-d]thiazole-8-sulfonic acid coupling, its product to diazo, coupled with the 4-Hydroxynaphthalene-1-sulfonic acid.

Properties and Applications

colourful red yellow light. Soluble in water for orange red to big red, right amount soluble in alcohol is palm light orange. The strong sulfuric acid in red for quality, to orange diluted. The dye solution to join strong hydrochloric acid have red precipitate; Add thick sodium hydroxide solution for orange brown.

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 4 4 3 1-2 1-2

6-Hydroxy-2-[3-[(1-hydroxy-4-sodiosulfo-2-naphthalenyl)azo]phenyl]-7-phenylazo-1H-naphth[1,2-d]imidazole-8-sulfonic acid sodium salt Preparation Products And Raw materials

6-Hydroxy-2-[3-[(1-hydroxy-4-sodiosulfo-2-naphthalenyl)azo]phenyl]-7-phenylazo-1H-naphth[1,2-d]imidazole-8-sulfonic acid sodium salt Benzo Scarlet FBS C.I.26720 C.I.Direct Red 57 Direct Red 57 C.I.Direct Red 57:C.I.26720 6406-48-0