Description

Disodium 6-Amino-5-[[4-[(3-Chlorobenzoyl)Amino]-2-Sulphonatophenyl]Azo]-4-Hydroxynaphthalene-2-Sulphonate is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its precise molecular structure makes it a critical precursor for synthesizing specialized dyes and pigments, particularly in applications requiring specific color fastness and stability. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to produce high-performance colorants.

Application

• Primary intermediate for the synthesis of high-grade, reactive azo dyes used in textile dyeing and printing.
• Key precursor in the manufacture of pigments for industrial inks, including those for packaging and publications.
• Used in the production of colorants for specialty coatings and paints that require enhanced light and wash fastness.
• Employed in research and development for creating novel chromophores with specific optical properties.
• Potential use in the formulation of dyes for leather and paper products.
• Acts as a standard or reference compound in analytical chemistry for dye identification and quality control.

Basic Information

Product Name	Disodium 6-Amino-5-[[4-[(3-Chlorobenzoyl)Amino]-2-Sulphonatophenyl]Azo]-4-Hydroxynaphthalene-2-Sulphonate
CAS No.	67875-07-4
Molecular Formula	C23H15ClN4Na2O9S2
Molecular Weight	628.95 g/mol
Synonyms	6-Amino-5-[[4-[(3-chlorobenzoyl)amino]-2-sulfophenyl]azo]-4-hydroxy-2-naphthalenesulfonic acid, disodium salt; C.I. Reactive Red 120; Reactive Red 120; Remazol Red 3BS; Sumifix Red 3BS; Levafix Red E-4BA; CAS 67875-07-4; Disodium 6-amino-5-((4-((3-chlorobenzoyl)amino)-2-sulfonatophenyl)azo)-4-hydroxynaphthalene-2-sulfonate
EINECS	Contact for details

Quality Control

Our Disodium 6-Amino-5-[[4-[(3-Chlorobenzoyl)Amino]-2-Sulphonatophenyl]Azo]-4-Hydroxynaphthalene-2-Sulphonate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for sensitive synthesis processes. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can affect product performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
pH (1% Solution)	6.0 - 8.0
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.