Description

Pentasodium 5-[[2,4-dihydroxy-5-[[4-(6-methylbenzothiazol-2-yl)-3-sulphonatophenyl]azo]phenyl]azo]-4-hydroxy-3-[[3-sulphonato-4-[(4-sulphonatophenyl)azo]phenyl]azo]naphthalene-2,7-disulphonate is a high-performance, multi-sulfonated azo dye complex designed for demanding industrial applications. This compound matters for its exceptional color strength, stability, and solubility in aqueous systems, making it a critical component for achieving vibrant and durable hues. It is primarily needed by manufacturers in the textile, leather, and specialty ink industries seeking reliable and consistent coloring agents.

Application

• Textile Dyeing: Primary application for dyeing natural and synthetic fibers, particularly where high wet-fastness and light-fastness are required.
• Leather Finishing: Used in the coloration of leather goods, providing deep, uniform shades with good penetration.
• Paper Coloring: Employed in the production of colored papers and paperboard where aqueous dye systems are preferred.
• Inkjet Inks: A key component in the formulation of certain industrial and specialty inkjet inks due to its solubility and color properties.
• Biological Staining: Potential use as a histological stain in laboratory settings, given its complex structure and affinity for specific tissues.
• Liquid Detergent Dyes: Suitable for coloring liquid soaps and detergents where stability in alkaline and surfactant-rich environments is crucial.

Basic Information

Product Name	Pentasodium 5-[[2,4-dihydroxy-5-[[4-(6-methylbenzothiazol-2-yl)-3-sulphonatophenyl]azo]phenyl]azo]-4-hydroxy-3-[[3-sulphonato-4-[(4-sulphonatophenyl)azo]phenyl]azo]naphthalene-2,7-disulphonate
CAS No.	72152-65-9
Molecular Formula	C46H24N8Na5O21S6
Molecular Weight	~1343.0 g/mol (Contact for exact details)
Synonyms	Acid Black 210; C.I. 300310; Black 210; Pentasodium 5-[[2,4-dihydroxy-5-[(4-(6-methyl-2-benzothiazolyl)-3-sulfophenyl)azo]phenyl]azo]-4-hydroxy-3-[(3-sulfo-4-[(4-sulfophenyl)azo]phenyl)azo]-2,7-naphthalenedisulfonate; Reactive Black 5 (related class); Azo Black Dye; Multi-sulfonated Azo Dye; Leather Black Dye
EINECS	Contact for details

Quality Control

Our pentasodium azo dye is manufactured under a strict quality management system. Every batch undergoes rigorous testing to ensure compliance with industry standards for color value, purity, and heavy metal content. Certificates of Analysis (COA) detailing assay, impurity profile, and physical specifications are available upon request to support your quality assurance protocols.

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 nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product performance.

Specification

Item	Specification
Appearance	Dark blue to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 90%
Moisture Content	Max. 5.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	Max. 20 ppm
pH (1% Solution)	6.0 - 8.0

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