Description

Trisodium 4-Hydroxy-5-[[4-[[1-Hydroxy-6-(Phenylamino)-3-Sulphonato-2-Naphthyl]Azo]-5-Methoxy-2-Methylphenyl]Azo]Naphthalene-2,7-Disulphonate is a high-purity, water-soluble azo dye intermediate of significant industrial importance. This compound matters for its role as a critical precursor in the synthesis of vibrant and stable dyes and pigments, particularly in the textile and leather industries. Manufacturers and R&D laboratories specializing in colorant production require this chemical for developing products with excellent color fastness and application performance.

Application

• Primary Intermediate for Dye Synthesis: A key building block in the manufacturing of acid dyes, direct dyes, and reactive dyes used for coloring natural and synthetic fibers.
• Textile Industry: Used in the dyeing and printing processes for wool, silk, nylon, and other polyamide fibers to achieve deep, consistent shades.
• Leather Processing: Employed in the dyeing of leather goods, providing rich coloration with good penetration and durability.
• Ink Formulation: Serves as a colorant component in the production of specialty inks for various printing applications.
• Paper Coloring: Used in the manufacture of colored papers and paper products where specific hue requirements are needed.
• Research & Development: A vital compound for chemical research focused on novel dye structures, photochemical properties, and material science applications.
• Analytical Chemistry: Can be utilized as a reagent or standard in analytical methods for dye identification and quantification.

Basic Information

Item	Details
Product Name	Trisodium 4-Hydroxy-5-[[4-[[1-Hydroxy-6-(Phenylamino)-3-Sulphonato-2-Naphthyl]Azo]-5-Methoxy-2-Methylphenyl]Azo]Naphthalene-2,7-Disulphonate
CAS No.	3354-97-0
Molecular Formula	C34H23N5Na3O13S3
Molecular Weight	876.80 g/mol
Synonyms	Acid Black 210; C.I. 300310; Trisodium 4-hydroxy-5-{[4-({1-hydroxy-6-[(phenylamino)-κN]-3-sulfonato-2-naphthalenyl}azo)-5-methoxy-2-methylphenyl]azo}-2,7-naphthalenedisulfonate; 4-Hydroxy-5-({4-[(1-hydroxy-6-{[(phenyl)amino]sulfonyl}-2-naphthyl)azo]-5-methoxy-2-methylphenyl}azo)naphthalene-2,7-disulfonic acid trisodium salt; 2,7-Naphthalenedisulfonic acid, 4-hydroxy-5-((4-((1-hydroxy-6-(phenylamino)-3-sulfo-2-naphthalenyl)azo)-5-methoxy-2-methylphenyl)azo)-, trisodium salt; Dye intermediate for Acid Black 210; Azo dye intermediate CAS 3354-97-0
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality control protocols to ensure batch-to-batch consistency and high chemical purity. The manufacturing process is monitored against established internal specifications, which typically include parameters for identity, assay, impurity profile, and physical characteristics. A Certificate of Analysis (COA) detailing these results is provided with each shipment to guarantee product integrity and support your quality assurance processes.

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 tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Freely soluble

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