Description

Disodium 7-[(Aminocarbonyl)Amino]-4-Hydroxy-3-[[4-[(4-Sulphonatophenyl)Azo]Phenyl]Azo]Naphthalene-2-Sulphonate is a high-purity, water-soluble azo dye intermediate with excellent tinctorial strength. This compound is valued for its ability to impart vibrant and stable coloration in demanding industrial processes. It is primarily required by manufacturers in the textile, ink, and specialty chemical sectors for producing high-performance dyes and pigments.

Application

• Primary intermediate for the synthesis of acid dyes and direct dyes used in textile coloration, particularly for nylon, silk, and wool.
• Key component in the manufacturing of pigments and colorants for inks, including printing and writing inks.
• Used in the production of specialty dyes for paper, leather, and food contact materials (where compliant).
• Acts as a functional intermediate in organic synthesis and research chemistry for developing novel chromophores.
• Potential use in the formulation of analytical reagents and indicators in laboratory settings.

Basic Information

Product Name	Disodium 7-[(Aminocarbonyl)Amino]-4-Hydroxy-3-[[4-[(4-Sulphonatophenyl)Azo]Phenyl]Azo]Naphthalene-2-Sulphonate
CAS No.	5873-20-1
Molecular Formula	C23H16N6Na2O8S2
Molecular Weight	630.51 g/mol
Synonyms	Acid Red 1; C.I. 18050; Disodium 8-(4-sulfophenylazo)-7-(4-sulfophenylhydrazo)-1-naphthol-3,6-disulfonate; 7-(Carbamoylamino)-4-hydroxy-3-((4-((4-sulfonatophenyl)diazenyl)phenyl)diazenyl)naphthalene-2-sulfonate disodium salt; Naphthalene Scarlet 4R; Azo Rubine S; Amidonaphthol Red G; 5873-20-1
EINECS	227-524-0

Quality Control

Our production of Disodium 7-[(Aminocarbonyl)Amino]-4-Hydroxy-3-[[4-[(4-Sulphonatophenyl)Azo]Phenyl]Azo]Naphthalene-2-Sulphonate adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and spectrophotometry for color strength, to ensure consistency and compliance with industry specifications. A Certificate of Analysis (COA) detailing purity, impurity profile, and physical properties is provided with each shipment.

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 sealed to minimize exposure to atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Color Strength	98 - 102% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	Clear solution
Heavy Metals (as Pb)	≤ 20 ppm
Sulfated Ash	≤ 30.0%

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