Description

Tetrasodium 3-[[4-[[4-[(6-Amino-1-Hydroxy-3-Sulphonato-2-Naphthyl)Azo]-7-Sulphonato-1-Naphthyl]Azo]-1-Naphthyl]Azo]Naphthalene-1,5-Disulphonate is a high-purity, water-soluble azo dye intermediate of significant commercial importance. This compound is valued for its role in synthesizing high-performance dyes and pigments with excellent color fastness and stability. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries for producing vibrant and durable colorants.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of high-quality reactive dyes for cotton and other cellulosic fibers.
• Textile Dye Manufacturing: Used in the production of dyes that offer superior wash and light fastness for the textile industry.
• Ink and Pigment Production: Serves as a precursor for manufacturing pigments used in inks, coatings, and plastics.
• Specialty Chemical Synthesis: Employed in research and development for creating novel chromophores and functional dyes.
• Biological Staining Agents: Potential use in the synthesis of stains for histological and cytological applications.

Basic Information

Product Name	Tetrasodium 3-[[4-[[4-[(6-Amino-1-Hydroxy-3-Sulphonato-2-Naphthyl)Azo]-7-Sulphonato-1-Naphthyl]Azo]-1-Naphthyl]Azo]Naphthalene-1,5-Disulphonate
CAS No.	87440-96-8
Molecular Formula	C40H22N8Na4O16S4
Molecular Weight	1110.86 g/mol
Synonyms	Tetrasodium 1,5-Naphthalenedisulfonate, 3-[[4-[[4-[(6-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo]-7-sulfo-1-naphthalenyl]azo]-1-naphthalenyl]azo]-; C.I. Reactive Black 5 Intermediate; Tetrasodium 3,3',3'',3'''-([1,1'-binaphthalene]-4,4',5,5'-tetrayltetrakis(azo))tetrakis(6-aminonaphthalene-2-sulfonate); Reactive Black 5 Tetrasodium Salt Precursor; Azo Dye Intermediate 87440-96-8; 3-[[4-[[4-[(6-Amino-1-hydroxy-3-sulfonato-2-naphthyl)azo]-7-sulfonato-1-naphthyl]azo]-1-naphthyl]azo]naphthalene-1,5-disulfonate tetrasodium salt
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques like HPLC to verify identity and assay. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical specifications is provided with every shipment to support your quality assurance protocols.

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) and light-sensitive; containers must be kept sealed to prevent absorption of atmospheric moisture and degradation.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm

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