Description

Tetrasodium 2,2'-[(1,4-Dioxo-2-Butene-1,4-Diyl)Bis[Imino(2-Methyl-4,1-Phenylene)Azo]]Bis[5-[(4-Sulphonatophenyl)Azo]Benzenesulphonate] is a high-purity, water-soluble azo dye intermediate of significant industrial importance. This compound is valued for its role in synthesizing vibrant and stable colorants, particularly for demanding technical applications. It is primarily sought by manufacturers in the textile, ink, and specialty polymer industries where consistent color quality and chemical performance are critical.

Application

• Textile Dyeing: A key intermediate for producing reactive and direct dyes for cotton, wool, and synthetic fibers.
• Ink Manufacturing: Used in the synthesis of pigments for high-performance printing inks, including inks for packaging and textiles.
• Plastic and Polymer Coloring: Serves as a precursor for colorants used in coloring plastics, resins, and masterbatches.
• Paper Coloring: Employed in the production of dyes for specialty paper and paperboard products.
• Leather Finishing: Used in dye formulations for achieving deep, uniform colors on leather goods.
• Research & Development: A valuable chemical for R&D laboratories focusing on novel dye synthesis and material science.

Basic Information

Product Name	Tetrasodium 2,2'-[(1,4-Dioxo-2-Butene-1,4-Diyl)Bis[Imino(2-Methyl-4,1-Phenylene)Azo]]Bis[5-[(4-Sulphonatophenyl)Azo]Benzenesulphonate]
CAS No.	72252-60-9
Molecular Formula	C52H34N10Na4O18S4
Molecular Weight	~1290.10 g/mol
Synonyms	Reactive Black 5 Tetrasodium Salt; C.I. Reactive Black 5; Remazol Black B; Lanasol Black B; Tetrasodium 4-Amino-5-hydroxy-3-[[4-[[2-(sulfoxy)ethyl]sulfonyl]phenyl]azo]-6-(phenylamino)-2,7-naphthalenedisulfonate (related isomer); Tetrasodium 8-[(4-[[2-(Ethylsulfonyl)oxyethyl]sulfonyl]phenyl)azo]-7-hydroxy-1,3,6-naphthalenetrisulfonate; Azo Dye Intermediate 72252-60-9
EINECS	Contact for details

Quality Control

Our production of Tetrasodium 2,2'-[(1,4-Dioxo-2-Butene-1,4-Diyl)Bis[Imino(2-Methyl-4,1-Phenylene)Azo]]Bis[5-[(4-Sulphonatophenyl)Azo]Benzenesulphonate] adheres to stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and industry standards. A detailed Certificate of Analysis (COA) is provided with every shipment to guarantee traceability and performance consistency.

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); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark blue to black powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm
Sulfated Ash	≤ 30.0%

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