Description

Tetrasodium 2,2'-[[4,4'-Bis[[4,5-Dihydro-5-Imino-3-Methyl-1-(8-Sulphonato-2-Naphthyl)-1H-Pyrazol-4-Yl]Azo][1,1'-Biphenyl]-3,3'-Diyl]Bis(Oxy)]Bisacetate is a high-purity, water-soluble anionic dye intermediate with a complex, multi-functional structure. This compound is valued for its ability to impart strong, stable coloration and act as a key building block in the synthesis of advanced colorants. It is primarily sought by manufacturers in the textile, ink, and specialty chemical industries for producing high-performance dyes and pigments.

Application

• Textile Dyeing: A critical intermediate for synthesizing reactive and direct dyes for cotton, wool, and nylon, offering excellent wash and light fastness.
• Inkjet Inks: Used in the production of high-quality colorants for industrial and commercial inkjet printing applications.
• Paper Coloring: Employed in the manufacture of dyes for specialty papers and packaging materials.
• Leather Finishing: Serves as a precursor for dyes used in the leather tanning and finishing industry.
• Research & Development: A valuable chemical for R&D laboratories focusing on novel chromophore synthesis and dye chemistry.
• Specialty Coatings: Can be incorporated into formulations for colored coatings and functional layers.

Basic Information

Product Name	Tetrasodium 2,2'-[[4,4'-Bis[[4,5-Dihydro-5-Imino-3-Methyl-1-(8-Sulphonato-2-Naphthyl)-1H-Pyrazol-4-Yl]Azo][1,1'-Biphenyl]-3,3'-Diyl]Bis(Oxy)]Bisacetate
CAS No.	83249-31-4
Molecular Formula	C58H42N12Na4O16S2
Molecular Weight	~1296.18 g/mol (Contact for exact details)
Synonyms	Reactive Black 5 Intermediate; Tetrasodium 4,4'-Bis[(4,5-dihydro-3-methyl-5-oxo-1-(8-sulphonato-2-naphthyl)-1H-pyrazol-4-yl)azo]biphenyl-3,3'-diylbis(oxy)diacetate; C.I. Reactive Black 5 precursor; Azo dye intermediate 83249-31-4; 1,1'-Biphenyl, 4,4'-bis[(4,5-dihydro-5-imino-3-methyl-1-(8-sulfo-2-naphthalenyl)-1H-pyrazol-4-yl)azo]-3,3'-bis(oxy)bis(acetic acid) tetrasodium salt
EINECS	Contact for details

Quality Control

Our production of Tetrasodium 2,2'-[[4,4'-Bis[[4,5-Dihydro-5-Imino-3-Methyl-1-(8-Sulphonato-2-Naphthyl)-1H-Pyrazol-4-Yl]Azo][1,1'-Biphenyl]-3,3'-Diyl]Bis(Oxy)]Bisacetate adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and meet precise customer specifications. Certificates of Analysis (COA) documenting all critical parameters are available upon request.

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). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product stability and performance.

Specification

Item	Specification
Appearance	Dark blue to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Solubility (in Water)	Completely soluble
Heavy Metals (as Pb)	≤ 20 ppm

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