Description

5-Amino-4-Hydroxy-3-[[4'-[(1-Hydroxy-4-Sulfo-2-Naphtyl)Azo]-1,1'-Biphenyl-4-Yl]Azo]-2,7-Naphthalenedisulfonic Acid Trisodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its value lies in its role as a critical precursor for synthesizing high-performance dyes and pigments, particularly those requiring excellent color strength and stability. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries seeking to produce vibrant, durable colors.

Application

• Primary Intermediate for Reactive Dyes: Key building block for synthesizing high-quality reactive dyes used in cotton and cellulose fiber dyeing.
• Textile Colorant Production: Manufacture of azo-based dyes and pigments for the textile industry, offering a range of colors from yellows to reds and browns.
• Ink and Toner Formulations: Used in the production of colorants for printing inks, including inks for packaging, publications, and digital printing.
• Specialty Pigment Synthesis: Intermediate for creating complex organic pigments used in paints, coatings, and plastics where high color fastness is required.
• Laboratory and R&D: Serves as a reference standard and a starting material for research into new chromophores and dye molecules.

Basic Information

Product Name	5-Amino-4-Hydroxy-3-[[4'-[(1-Hydroxy-4-Sulfo-2-Naphtyl)Azo]-1,1'-Biphenyl-4-Yl]Azo]-2,7-Naphthalenedisulfonic Acid Trisodium Salt
CAS No.	6527-65-7
Molecular Formula	C32H19N5Na3O12S3
Molecular Weight	847.66 g/mol
Synonyms	Acid Black 210; C.I. 300310; Trisodium 5-amino-4-hydroxy-3-[[4'-[(1-hydroxy-4-sulphonato-2-naphthyl)azo][1,1'-biphenyl]-4-yl]azo]naphthalene-2,7-disulphonate; 5-Amino-4-hydroxy-3-({4'-[(1-hydroxy-4-sulfo-2-naphthyl)azo][1,1'-biphenyl]-4-yl}azo)naphthalene-2,7-disulfonic acid trisodium salt; Reactive Black 5 intermediate; Azo dye intermediate 6527-65-7
EINECS	229-439-5

Quality Control

Our production of this azo dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and high chemical purity. Each lot is tested against established specifications, including identity confirmation, assay, and impurity profile analysis. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to 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 nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Dark brown to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Solubility (1% in Water)	Complete, clear solution
Heavy Metals (as Pb)	≤ 20 ppm

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