2829-43-8

Basic information

• Product Name: Direct Red 75 tetrasodium salt
• Synonyms: 2-naphthalenesulfonicacid,5,5’-[carbonylbis[imino(2-sulfo-4,1-phenylene)azo]];2-Naphthalenesulfonicacid,5,5’-[carbonylbis[imino(2-sulfo-4,1-phenylene)azo]]bis[6-amino-4-hydroxy-,tetrasodiumsalt;8,8’-[Carbonyldiiminobis(2-sulfo-1,4-phenyleneazo)]di(7-amino-3-sulfo-1-naphthol),tetrasodiumsalt;abcolfastpink2bl;SIRIUS ROSE BB;SOLANTINE PINK 4BL;PONTAMINE FAST PINK;VITAL NEW RED
• CAS NO: 2829-43-8
• Molecular Formula: C33H22N8Na4O15S4
• Molecular Weight: 990.79
• EINECS: 220-593-1
• Product Categories: Dyes and Pigments;Organics
• Mol File: 2829-43-8.mol
• Article Data: 0

Chemical Properties

• Appearance: /Powder
• Density: 1.9g/cm3
• Refractive Index: 1.82
• CAS DataBase Reference: Direct Red 75 tetrasodium salt(CAS DataBase Reference)
• NIST Chemistry Reference: Direct Red 75 tetrasodium salt(2829-43-8)
• EPA Substance Registry System: Direct Red 75 tetrasodium salt(2829-43-8)

Safety Data

• WGK Germany: 3
• Hazardous Substances Data: 2829-43-8(Hazardous Substances Data)

Usage

Description

Direct Red 75 tetrasodium salt is a synthetic azo dye with the chemical formula C20H9N2Na4O7S2. It is a water-soluble compound, characterized by its bright red color and used in various applications due to its properties.

Uses

Used in Textile Industry:
Direct Red 75 tetrasodium salt is used as a colorant for dyeing and printing textiles. Its application reason is its ability to provide a vibrant red color with good light fastness and resistance to both acid and alkali.
Used in Leather Industry:
In the leather industry, Direct Red 75 tetrasodium salt is used as a dye for coloring leather products. The reason for its use is its good light fastness and resistance to fading and staining, which helps maintain the color of the leather over time.
Used in Paper Industry:
Direct Red 75 tetrasodium salt is employed as a colorant in the paper industry for dyeing and printing paper products. Its application reason is its compatibility with the paper-making process and its ability to provide a consistent and long-lasting red color.
Used in Cosmetics Industry:
Direct Red 75 tetrasodium salt is used as a color additive in the cosmetics industry, particularly in products like lipsticks and blushes. The reason for its use is its intense color, which provides a long-lasting and vibrant appearance to the cosmetic products.
Used in Analytical Chemistry:
In analytical chemistry, Direct Red 75 tetrasodium salt is used as an indicator in various chemical tests. Its application reason is its ability to change color in response to changes in pH, making it a useful tool for detecting specific chemical reactions.

Standard

Acid Resistance

Fading

Stain

ISO

2-3

AATCC

3

InChI:InChI=1/C33H26N8O15S4/c34-21-5-1-15-9-19(57(45,46)47)13-25(42)29(15)31(21)40-38-17-3-7-23(27(11-17)59(51,52)53)36-33(44)37-24-8-4-18(12-28(24)60(54,55)56)39-41-32-22(35)6-2-16-10-20(58(48,49)50)14-26(43)30(16)32/h1-14,34-35,38-41H,(H2,36,37,44)(H,45,46,47)(H,48,49,50)(H,51,52,53)(H,54,55,56)/b34-21+,35-22+