Description

2,7-Naphthalenedisulfonic Acid, 3,3-(Phenylimino)Bis(6-Chloro-1,3,5-Triazine-4,2-Diyl)Imino(6-Sulfo-3,1-Phenylene)Azobis5-(Benzoylamino)-4-Hydroxy- is a high-performance, complex organic dye intermediate and functional chemical. This compound is valued for its ability to impart specific optical and chemical properties in advanced material formulations. It is primarily required by manufacturers in the textile dyeing, specialty ink, and high-end pigment industries for creating vivid and stable colors.

Application

• Reactive Dye Synthesis: A key intermediate for manufacturing high-grade reactive dyes used in cotton and cellulose fiber dyeing.
• Pigment Manufacturing: Used in the production of high-performance organic pigments for inks, coatings, and plastics requiring excellent color fastness.
• Functional Dyes: Serves as a precursor for dyes used in specialized applications such as laser marking, optical data storage, and security printing.
• Textile Printing Inks: Imparts deep, stable coloration in inks for digital and screen printing on textiles.
• Research & Development: Utilized in chemical R&D for developing novel chromophores and studying structure-property relationships in dye chemistry.
• Analytical Chemistry: May be employed as a staining agent or a complexometric indicator in specific analytical procedures.

Basic Information

Product Name	2,7-Naphthalenedisulfonic Acid, 3,3-(Phenylimino)Bis(6-Chloro-1,3,5-Triazine-4,2-Diyl)Imino(6-Sulfo-3,1-Phenylene)Azobis5-(Benzoylamino)-4-Hydroxy-
CAS No.	49751-05-5
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Reactive Blue 221; Reactive Blue 221; 2,7-Naphthalenedisulfonic acid, 3,3'-(phenylimino)bis[6-chloro-1,3,5-triazine-4,2-diyl)imino(6-sulfo-3,1-phenylene)azo]bis[5-(benzoylamino)-4-hydroxy-; Reactive Blue B-RV; 49751-05-5; C.I. 74182
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality protocols to ensure batch-to-batch consistency and performance reliability. Quality is verified through comprehensive analytical testing, including HPLC for purity and spectrophotometry for color strength. A Certificate of Analysis (COA) detailing specific batch results is provided with every shipment.

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 performance.

Specification

Item	Specification
Appearance	Dark blue to bluish-black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Moisture Content	Max. 5.0%
Ash Content	Max. 1.0%
Water Solubility	Soluble

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