Description

Tetrasodium 5-(acetamido)-3-[[4-[[4-[[8-(acetamido)-1-hydroxy-3,6-disulphonato-2-naphthyl]azo]-5-methoxy-o-tolyl]azo]phenyl]azo]-4-hydroxynaphthalene-2,7-disulphonate is a high-purity, water-soluble polyazo dye belonging to the class of reactive or direct dyes, characterized by its multiple sulfonate groups which impart excellent solubility and substantivity. This compound matters for its ability to provide vibrant, wash-fast, and light-fast coloration, primarily on cellulosic fibers like cotton and viscose. Industrial manufacturers in the textile, leather, and specialty paper sectors require this chemical for producing consistent, high-quality colored materials.

Application

• Textile Dyeing: Primary application for dyeing cotton, viscose, and other cellulosic fibers to achieve deep, durable shades.
• Leather Coloring: Used in the tanning industry for coloring leather goods, providing good penetration and color fastness.
• Paper Staining: Employed in the production of specialty colored papers, including decorative and security papers.
• Ink Formulation: A key component in the manufacture of certain industrial inks, particularly for applications requiring water solubility.
• Biological Staining: Potential use as a histological stain in laboratory settings due to its specific affinity.
• Research & Development: Serves as a chemical intermediate or reference standard in synthetic chemistry and dye research.

Basic Information

Product Name	Tetrasodium 5-(acetamido)-3-[[4-[[4-[[8-(acetamido)-1-hydroxy-3,6-disulphonato-2-naphthyl]azo]-5-methoxy-o-tolyl]azo]phenyl]azo]-4-hydroxynaphthalene-2,7-disulphonate
CAS No.	84560-10-1
Molecular Formula	C45H30N10Na4O20S4
Molecular Weight	~1250.0 g/mol (Contact for details)
Synonyms	Reactive Black 5 (Tetrasodium Salt); C.I. Reactive Black 5; Remazol Black B; Tetrasodium 8-Acetamido-2-[[4-[[4-[[2-(acetamido)-4-[(4-sulfophenyl)azo]-5-methoxyphenyl]azo]phenyl]azo]-1-hydroxy-3,6-disulfo-2-naphthalenyl]azo]-1-hydroxy-3,6-naphthalenedisulfonate; Lanasol Black B; Procion Black H-EXL; C.I. 20505; Tetrasodium 1-Acetamido-2-[[4-[[4-[[2-(acetamido)-4-[(4-sulfophenyl)azo]-5-methoxyphenyl]azo]phenyl]azo]-1-hydroxy-3,6-disulfo-2-naphthyl]azo]-8-hydroxynaphthalene-3,6-disulfonate
EINECS	Contact for details

Quality Control

Our tetrasodium dye is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise specifications for color strength, hue, and chemical purity. A detailed Certificate of Analysis (COA) is provided with each shipment, documenting key parameters such as assay, impurity profile, and solubility. We adhere to relevant industry standards to guarantee batch-to-batch consistency and performance reliability for your critical applications.

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). Keep away from strong oxidizing agents. The product is hygroscopic; ensure the container is sealed after each use to prevent moisture absorption, which can affect performance.

Specification

Item	Specification
Appearance	Dark blue to black powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 90% (Dye Content)
Moisture Content	Max. 5.0%
Water Solubility	Freely soluble
pH (1% Solution)	7.0 - 9.0
Heavy Metals (as Pb)	Max. 20 ppm
Ash Content	Contact for details

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