Description

7-Amino-5-[[4-[(2-Bromo-1-Oxo-2-Propenyl)Amino]-2-[(4-Methyl-3-Sulfophenyl)Sulfonyl]Phenyl]Azo]-2-Naphthalenesulfonic Acid Disodium Salt is a high-purity, water-soluble azo dye intermediate characterized by its complex sulfonated structure. This compound is a critical building block for synthesizing specialized reactive and acid dyes, offering excellent color fastness and affinity to substrates like nylon, wool, and silk. It is primarily utilized by manufacturers in the textile dyeing, specialty ink, and advanced material coating industries seeking to produce vibrant, durable colors.

Application

• Primary Intermediate for Reactive Dyes: Key precursor in the synthesis of high-performance reactive dyes for textile fibers, particularly cellulose and polyamide.
• Acid Dye Manufacturing: Used in the production of acid dyes for coloring wool, silk, and nylon with strong wash and light fastness.
• Specialty Ink Formulation: A functional component in the creation of high-quality inks for industrial printing and security applications.
• Functional Dye Synthesis: Serves as a starting material for dyes used in biological staining, optical sensors, and laser applications.
• Polymer and Material Coloring: Imparts color to specialty polymers, coatings, and advanced material composites.
• Research & Development: A valuable chemical for R&D laboratories exploring new chromophores and dye chemistry.

Basic Information

Product Name	7-Amino-5-[[4-[(2-Bromo-1-Oxo-2-Propenyl)Amino]-2-[(4-Methyl-3-Sulfophenyl)Sulfonyl]Phenyl]Azo]-2-Naphthalenesulfonic Acid Disodium Salt
CAS No.	70210-02-5
Molecular Formula	C26H19BrN4Na2O9S3
Molecular Weight	753.58 g/mol
Synonyms	7-Amino-5-[[4-[(2-bromo-1-oxo-2-propenyl)amino]-2-[(4-methyl-3-sulfophenyl)sulfonyl]phenyl]azo]-2-naphthalenesulfonic acid, disodium salt; Reactive Dye Intermediate; C.I. Reactive Orange 16 intermediate; Azo dye intermediate 70210-02-5; 2-Naphthalenesulfonic acid, 7-amino-5-[[4-[(2-bromo-1-oxo-2-propenyl)amino]-2-[(4-methyl-3-sulfophenyl)sulfonyl]phenyl]azo]-, disodium salt; Disodium 7-amino-5-({4-[(2-bromoacryloyl)amino]-2-[(4-methyl-3-sulfophenyl)sulfonyl]phenyl}diazenyl)naphthalene-2-sulfonate
EINECS	Contact for details

Quality Control

Our 7-Amino-5-[[4-[(2-Bromo-1-Oxo-2-Propenyl)Amino]-2-[(4-Methyl-3-Sulfophenyl)Sulfonyl]Phenyl]Azo]-2-Naphthalenesulfonic Acid Disodium Salt is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications. A detailed Certificate of Analysis (COA) documenting purity, impurity profile, and physical characteristics is provided with each shipment to guarantee consistency and traceability.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Dark brown to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Freely soluble

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.