Description

7-Hydroxy-8-[[2-Sulfo-5-[(2,5,6-Trichloro-4-Pyrimidinyl)Amino]Phenyl]Azo]-1,3-Naphthalenedisulfonic Acid Trisodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its complex molecular structure, featuring a pyrimidine ring and multiple sulfonic acid groups, makes it a critical precursor for synthesizing specialized dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries seeking to produce vivid, stable colors with specific functional properties.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of high-performance reactive dyes for cotton and other cellulose fibers.
• Specialty Pigment Manufacturing: Used in the production of complex organic pigments for inks, coatings, and plastics requiring specific color fastness and stability.
• Functional Dye Synthesis: Serves as a precursor for dyes used in biological staining, pH indicators, or other analytical applications due to its azo and heterocyclic structure.
• Textile Colorants: Imparts bright and durable shades in textile dyeing and printing processes.
• Research & Development: Utilized in chemical R&D for creating novel chromophores and studying structure-property relationships in dye chemistry.

Basic Information

Item	Details
Product Name	7-Hydroxy-8-[[2-Sulfo-5-[(2,5,6-Trichloro-4-Pyrimidinyl)Amino]Phenyl]Azo]-1,3-Naphthalenedisulfonic Acid Trisodium Salt
CAS No.	71720-90-6
Molecular Formula	C20H10Cl3N5Na3O10S3
Molecular Weight	Approx. 788.86 g/mol
Synonyms	Trisodium 7-hydroxy-8-{[5-[(2,5,6-trichloropyrimidin-4-yl)amino]-2-sulfophenyl]diazenyl}naphthalene-1,3-disulfonate; Reactive Dye Intermediate; Azo Pyrimidine Dye Intermediate; C.I. Reactive Orange 84 intermediate; 2,7-Naphthalenedisulfonic acid, 5-[[4-[(2,5,6-trichloro-4-pyrimidinyl)amino]phenyl]azo]-8-hydroxy-, trisodium salt; 71720-90-6; Trisodium 8-hydroxy-7-{[2-sulfo-5-[(2,5,6-trichloro-4-pyrimidinyl)amino]phenyl]azo}-1,3-naphthalenedisulfonate
EINECS	Contact for details

Quality Control

Our production of 7-Hydroxy-8-[[2-Sulfo-5-[(2,5,6-Trichloro-4-Pyrimidinyl)Amino]Phenyl]Azo]-1,3-Naphthalenedisulfonic Acid Trisodium Salt adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and meet the exacting standards required for dye synthesis. Certificates of Analysis (COA) detailing all specifications are provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Dark brown to reddish-brown powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear solution

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