Description

Disodium 3-[[5-[(2,3-Dibromo-1-Oxopropyl)Amino]-2-Sulphonatophenyl]Azo]-7-[(2,3-Dibromo-1-Oxopropyl)Methylamino]-4-Hydroxynaphthalene-2-Sulphonate is a high-purity, synthetic organic compound belonging to the azo dye class, specifically engineered for demanding technical applications. Its complex molecular structure provides excellent colorant properties and functional performance, making it a critical intermediate for specialized industrial processes. This product is essential for manufacturers in the textile, ink, and specialty chemical sectors seeking consistent, high-quality raw materials for their production lines.

Application

• Textile Dyeing Intermediate: Primarily used as a key intermediate in the synthesis of high-performance, reactive azo dyes for coloring natural and synthetic fibers.
• Specialty Ink Formulation: Serves as a functional pigment precursor in the production of inks for industrial printing, security inks, and other niche applications.
• Functional Colorant Synthesis: Acts as a building block for creating complex colorants used in plastics, coatings, and advanced material science.
• Research & Development: Utilized in chemical R&D laboratories for developing novel chromophores and studying dye chemistry.
• Analytical Chemistry: May be employed as a reagent or standard in specific analytical methods due to its defined structure.

Basic Information

Product Name	Disodium 3-[[5-[(2,3-Dibromo-1-Oxopropyl)Amino]-2-Sulphonatophenyl]Azo]-7-[(2,3-Dibromo-1-Oxopropyl)Methylamino]-4-Hydroxynaphthalene-2-Sulphonate
CAS No.	67827-67-2
Molecular Formula	C26H22Br4N5Na2O11S2
Molecular Weight	~ 1019.1 g/mol
Synonyms	Reactive Black 5 Intermediate; C.I. Reactive Black 5 Precursor; Disodium 4-Amino-5-hydroxy-3-[[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-6-(phenylamino)naphthalene-2,7-disulfonate (related); Azo Dye Intermediate 67827-67-2; Tetrabromo Azo Dye Sodium Salt; 2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-6-phenylazo-3-[[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-, disodium salt (isomer); Textile Dye Intermediate CAS 67827-67-2
EINECS	Contact for details

Quality Control

Our production of Disodium 3-[[5-[(2,3-Dibromo-1-Oxopropyl)Amino]-2-Sulphonatophenyl]Azo]-7-[(2,3-Dibromo-1-Oxopropyl)Methylamino]-4-Hydroxynaphthalene-2-Sulphonate adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and spectroscopic identification (IR, UV-Vis), to ensure it meets precise customer specifications and industry standards. A detailed Certificate of Analysis (COA) is provided with each shipment, guaranteeing traceability and consistent performance for your critical applications.

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 stability and performance.

Specification

Item	Specification
Appearance	Dark powder or solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95% (Typical 97-99%)
Loss on Drying	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Sulfated Ash	Contact for details

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