Description

6-(2,3-Dibromopropionamido)-3-[[5-(2,3-Dibromopropionamido)-2-Sulphophenyl]Azo]-4-Hydroxynaphthalene-2-Sulphonic Acid is a specialized, high-purity azo dye intermediate with a complex polyfunctional structure. This compound is engineered to deliver consistent chromophore properties and reactivity, which is critical for producing high-performance dyes and pigments. It is primarily utilized by manufacturers in the textile, ink, and specialty chemical industries seeking to develop vivid, stable colors with specific fastness properties.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of high-quality reactive dyes for cotton and other cellulosic fibers.
• Specialty Pigment Manufacturing: Used in the production of complex organic pigments for inks, coatings, and plastics requiring excellent color strength and durability.
• Textile Dyeing and Printing: Imparts specific color shades with good wash and light fastness in advanced textile applications.
• Research & Development: Serves as a valuable chemical entity in R&D labs for developing new chromophores and studying azo dye chemistry.
• Functional Dye Synthesis: Potential use in creating dyes for non-textile applications, such as in optical data storage or laser dyes, due to its tailored molecular structure.

Basic Information

Product Name	6-(2,3-Dibromopropionamido)-3-[[5-(2,3-Dibromopropionamido)-2-Sulphophenyl]Azo]-4-Hydroxynaphthalene-2-Sulphonic Acid
CAS No.	32781-74-1
Molecular Formula	C22H18Br4N4O9S2
Molecular Weight	907.09 g/mol
Synonyms	Reactive Dye Intermediate 32781-74-1; C.I. Reactive Red 198 Intermediate; 6-(2,3-Dibromopropanamido)-3-{[5-(2,3-dibromopropanamido)-2-sulfophenyl]diazenyl}-4-hydroxynaphthalene-2-sulfonic acid; Azo Dye Intermediate CAS 32781-74-1; Tetrabromo Azo Dye Precursor; 2-Naphthalenesulfonic acid, 6-(2,3-dibromo-1-oxopropyl)amino-3-[[5-[(2,3-dibromo-1-oxopropyl)amino]-2-sulfophenyl]azo]-4-hydroxy-
EINECS	Contact for details

Quality Control

Every batch of our 6-(2,3-Dibromopropionamido)-3-[[5-(2,3-Dibromopropionamido)-2-Sulphophenyl]Azo]-4-Hydroxynaphthalene-2-Sulphonic Acid is manufactured under a strict quality management system. We employ advanced analytical techniques including HPLC, FT-IR, and elemental analysis to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications is provided with each shipment to guarantee it meets your precise technical requirements.

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 red to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 5.0%

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