2-Naphthalenesulfonic acid, 6-amino-3-[[4-[[4-amino-6(or 7)-sulfo-1-naphthalenyl]azo]-1-naphthalenyl]azo]-4-hydroxy-, disodium salt

CAS No.
8005-87-6
Chemical Name:
2-Naphthalenesulfonic acid, 6-amino-3-[[4-[[4-amino-6(or 7)-sulfo-1-naphthalenyl]azo]-1-naphthalenyl]azo]-4-hydroxy-, disodium salt
Synonyms
Direct Blue 132;C.I.Direct Blue 132:C.I.27725;2-Naphthalenesulfonic acid, 6-amino-3-[[4-[[4-amino-6(or 7)-sulfo-1-naphthalenyl]azo]-1-naphthalenyl]azo]-4-hydroxy-, disodium salt
CBNumber:
CB44794091
Molecular Formula:
Molecular Weight:
0
MDL Number:
MOL File:
Mol file

2-Naphthalenesulfonic acid, 6-amino-3-[[4-[[4-amino-6(or 7)-sulfo-1-naphthalenyl]azo]-1-naphthalenyl]azo]-4-hydroxy-, disodium salt Chemical Properties,Uses,Production

Preparation

5-Acetamido-8-amino-2-naphthalenesulfonic acid ?diazo, and Naphthalen-1-amine coupling, product to diazo, in alkaline conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid? coupling, and then hydrolysis acetyl amino.

Properties and Applications

green light navy blue. Soluble in water for blue, slightly soluble in ethanol and soluble fiber element. The strong sulfuric acid in the green light for black, dark blue purple for diluted; In the nitric acid for brown; In strong hydrochloric acid slightly soluble in for black. The dye solution to join strong hydrochloric acid have red light blue precipitation; Add sodium hydroxide have red light purple precipitation.

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 5 4-5 3-4 4 4
AATCC 4 4-5 3-4 4 4-5

2-Naphthalenesulfonic acid, 6-amino-3-[[4-[[4-amino-6(or 7)-sulfo-1-naphthalenyl]azo]-1-naphthalenyl]azo]-4-hydroxy-, disodium salt Preparation Products And Raw materials

2-Naphthalenesulfonic acid, 6-amino-3-[[4-[[4-amino-6(or 7)-sulfo-1-naphthalenyl]azo]-1-naphthalenyl]azo]-4-hydroxy-, disodium salt Direct Blue 132 C.I.Direct Blue 132:C.I.27725 8005-87-6