Description

4,5-Dihydroxy-3-[[4'-[[4-[(1,8-dihydroxy-4-sodiosulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]naphthalene-1-sulfonic acid sodium salt is a high-purity, complex azo dye intermediate essential for producing vibrant and stable colorants. Its multi-azo structure provides exceptional chromophore strength and binding affinity, making it a critical component for demanding applications where color fastness and consistency are paramount. This compound is primarily utilized by manufacturers in the textile, ink, and specialty coatings industries seeking to develop high-performance pigments and dyes.

Application

• Textile Dyeing: A key intermediate for synthesizing high-grade, wash-fast and light-fast dyes for natural and synthetic fibers.
• Ink Manufacturing: Used in the production of high-quality printing inks, including those for packaging, security, and digital applications, requiring intense color and stability.
• Pigment Production: Serves as a crucial precursor for manufacturing organic pigments used in plastics, paints, and industrial coatings.
• Leather Coloring: Employed in the formulation of durable and vibrant dyes for the leather tanning and finishing industry.
• Paper Coloring: Used in specialty paper dyeing processes where high color yield and uniformity are required.
• Research & Development: Acts as a standard or starting material in chemical research for developing new chromophores and functional dyes.

Basic Information

Product Name	4,5-Dihydroxy-3-[[4'-[[4-[(1,8-dihydroxy-4-sodiosulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]naphthalene-1-sulfonic acid sodium salt
CAS No.	6360-49-2
Molecular Formula	C52H34N6O11S2Na2
Molecular Weight	1020.96 g/mol
Synonyms	Acid Black 210; C.I. 300310; 4,5-Dihydroxy-3-[[4'-[[4-[(1,8-dihydroxy-4-sulfo-2-naphthyl)azo]-1-naphthyl]azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]-1-naphthalenesulfonic acid disodium salt; Disodium 4,5-dihydroxy-3-[[4'-[[4-[(1,8-dihydroxy-4-sulfo-2-naphthyl)azo]-1-naphthyl]azo]-3,3'-dimethylbiphenyl-4-yl]azo]naphthalene-1-sulfonate; Black 210; Azo Black 210
EINECS	Contact for details

Quality Control

Our production of this azo dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and high purity. Every lot is analyzed using advanced techniques like HPLC and spectrophotometry to confirm identity and assay. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical specifications is provided with each shipment, ensuring full traceability and compliance with customer specifications.

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). This material is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture, which may affect product performance.

Specification

Item	Specification
Appearance	Dark blue 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
Solubility (in water)	Partially soluble

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