6599-18-4

Basic information

• Product Name: C.I. Direct Blue 166
• Synonyms: C.I. Direct Blue 166;3,3'-[3,3'-Dihydroxy-1,1'-biphenyl-4,4'-diylbis(azo)]bis[7-amino-4-hydroxynaphthalene-2-sulfonic acid sodium] salt;C.I.23165
• CAS NO: 6599-18-4
• Molecular Weight: 0
• Mol File: 6599-18-4.mol
• Article Data: 0

Chemical Properties

• Appearance: /
• CAS DataBase Reference: C.I. Direct Blue 166(CAS DataBase Reference)
• NIST Chemistry Reference: C.I. Direct Blue 166(6599-18-4)
• EPA Substance Registry System: C.I. Direct Blue 166(6599-18-4)

Safety Data

• Hazardous Substances Data: 6599-18-4(Hazardous Substances Data)

Usage

Description

C.I. Direct Blue 166 is a direct dye characterized by its bright blue color. It is soluble in water, exhibiting a red-violet hue. When mixed with strong sulfuric acid, it turns blue, and upon dilution, it takes on a purple shade. The addition of a 10% sodium bicarbonate solution results in a red jade color.

Uses

Used in Textile Industry:
C.I. Direct Blue 166 is used as a dye for coloring textiles. It is valued for its ability to produce vibrant and long-lasting colors on various fabric types.
Used in Paper Industry:
In the paper industry, C.I. Direct Blue 166 serves as a dye for imparting color to paper products. Its light fastness and resistance to acid and alkali make it a suitable choice for paper applications.
Used in Leather Industry:
C.I. Direct Blue 166 is utilized as a dye in the leather industry for染色皮革产品. Its properties, such as acid and alkali resistance, contribute to the durability and colorfastness of leather goods.
The provided materials indicate that C.I. Direct Blue 166 has the following standards in terms of various resistances and fastness:
Acid Resistance: ISO 2, AATCC 2
Alkali Resistance: ISO 4-5, AATCC 4-5
Light Fastness: ISO 6, AATCC 5-6
Soaping: ISO 4, AATCC 3
Water: ISO 5, AATCC 5
These standards demonstrate the dye's performance and reliability in various applications across different industries.

Preparation

2-Amino-5-(4-amino-3-hydroxyphenyl)phenol double nitriding, in alkaline conditions and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid (2 Moore) coupled.

Standard

Acid Resistance

Fading

Stain

ISO

2

AATCC

2