Description

Tetrasodium hydrogen 7-[[[[6-[(2-methoxyphenyl)azo]-5-oxide-7-sulphonato-2-naphthyl]amino]carbonyl]amino]-4-oxide-3-[(6-sulphonato-2-naphthyl)azo]naphthalene-2-sulphonate is a high-purity, water-soluble azo dye intermediate of significant commercial importance. This compound is valued for its role in synthesizing vibrant and stable dyes and pigments, particularly in applications requiring high color strength and specific hue characteristics. It is primarily sought by manufacturers in the textile, ink, and specialty coatings industries for producing high-performance colorants.

Application

• Textile Dyeing: A key intermediate for the synthesis of reactive and direct dyes used on cotton, wool, and nylon fibers.
• Ink Manufacturing: Used in the production of pigments for industrial inks, including those for packaging and digital printing.
• Specialty Coatings: Serves as a colorant precursor in coatings for plastics, leather, and paper products.
• Research & Development: Employed in chemical research for developing new dye molecules and studying azo dye chemistry.
• Analytical Reagents: Can be utilized as a standard or reagent in analytical chemistry for colorimetric methods.

Basic Information

Item	Detail
Product Name	Tetrasodium hydrogen 7-[[[[6-[(2-methoxyphenyl)azo]-5-oxide-7-sulphonato-2-naphthyl]amino]carbonyl]amino]-4-oxide-3-[(6-sulphonato-2-naphthyl)azo]naphthalene-2-sulphonate
CAS No.	65186-16-5
Molecular Formula	C44H26N8Na4O18S4
Molecular Weight	Contact for details
Synonyms	Reactive Black 5 (Tetrasodium Salt); C.I. Reactive Black 5; Remazol Black B; Lanasol Black B; Tetrasodium 4-amino-5-hydroxy-3-[[4-[[2-(sulfonatooxy)ethyl]sulfonyl]phenyl]azo]-6-(phenylamino)-2,7-naphthalenedisulfonate; 2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-3-[[4-[[2-(sulfonatooxy)ethyl]sulfonyl]phenyl]azo]-6-(phenylamino)-, tetrasodium salt; C.I. 20505; Tetrasodium 8-[[4-[[2-(ethylsulfonyloxy)ethyl]sulfonyl]phenyl]azo]-7-oxo-5-sulfo-1-naphthylamino-4-hydroxy-2-naphthalenesulfonate
EINECS	Contact for details

Quality Control

Our tetrasodium hydrogen 7-[[[[6-[(2-methoxyphenyl)azo]-5-oxide-7-sulphonato-2-naphthyl]amino]carbonyl]amino]-4-oxide-3-[(6-sulphonato-2-naphthyl)azo]naphthalene-2-sulphonate is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent purity, color strength, and chemical composition. Certificates of Analysis (COA) documenting key parameters are available upon request to support your quality assurance and regulatory needs.

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). Keep away from strong oxidizing agents. Due to its complex organic structure, prolonged exposure to elevated temperatures or humidity should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Dark blue to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Water Solubility	Freely soluble
Loss on Drying	Max. 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	Max. 20 ppm

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