Description

7-Amino-8-[[4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]Azo]Naphthalene-2-Sulphonic Acid, Sodium Salt is a high-purity, water-soluble azo dye intermediate characterized by its reactive sulphonic acid and sulphooxyethylsulphonyl functional groups. This compound is essential for synthesizing advanced, wash-fast reactive dyes with excellent color yield and fiber affinity. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries seeking to produce vibrant and durable colorants.

Application

• Primary intermediate for the synthesis of high-performance reactive dyes for cotton, wool, and nylon.
• Key building block in the production of azo pigments and dyes for inks and coatings.
• Used in research and development of novel functional dyes for non-textile applications.
• Potential intermediate for biological staining agents in analytical chemistry.
• Employed in the manufacture of colorants for specialty papers and security printing.

Basic Information

Product Name	7-Amino-8-[[4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]Azo]Naphthalene-2-Sulphonic Acid, Sodium Salt
CAS No.	94158-90-4
Molecular Formula	C18H15N3Na2O10S3
Molecular Weight	607.48 g/mol
Synonyms	7-Amino-8-{[4-({2-[(Sulfooxy)ethyl]sulfonyl}phenyl)diazenyl]naphthalene-2-sulfonic acid, disodium salt; Reactive Dye Intermediate; C.I. Reactive Orange 107 intermediate; Sodium 7-amino-8-[(4-{2-[(sulfonatooxy)ethyl]sulfonyl}phenyl)diazenyl]naphthalene-2-sulfonate; 2-Naphthalenesulfonic acid, 7-amino-8-[[4-[[2-[(sulfooxy)ethyl]sulfonyl]phenyl]azo]-, sodium salt (1:2); Azo dye intermediate 94158-90-4
EINECS	Contact for details

Quality Control

Our 7-Amino-8-[[4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]Azo]Naphthalene-2-Sulphonic Acid, Sodium Salt is produced under a stringent quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting industry standards. Comprehensive Certificates of Analysis (COA) detailing all specifications are provided to guarantee supply reliability and batch-to-batch consistency for your critical synthesis processes.

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 (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent absorption of atmospheric moisture, which can affect product performance and stability.

Specification

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

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