Description

Trisodium 2-[[4-[[4-[(4,6-Dichloro-1,3,5-Triazin-2-Yl)Amino]-5-Sulphonato-1-Naphthyl]Azo]-2,5-Dimethylphenyl]Azo]Benzene-1,4-Disulphonate is a high-purity, reactive dye intermediate belonging to the class of chlorotriazine derivatives. This compound is critical for its role in forming covalent bonds with hydroxyl or amino groups in substrates, enabling the production of wash-fast and light-fast colorants. It is primarily required by manufacturers in the textile, paper, and specialty chemical industries seeking to develop advanced, durable dyes and pigments.

Application

• Reactive Dye Synthesis: A key intermediate for manufacturing fiber-reactive dyes, particularly for cotton, viscose, and other cellulosic fibers.
• Textile Printing and Dyeing: Used in processes requiring high color fastness to washing, light, and perspiration.
• Paper Coloring: Employed in the production of high-grade, colored papers where bleed resistance is essential.
• Leather Dyeing: Utilized for coloring leather goods, providing vibrant and durable shades.
• Biomolecule Labeling: Potential use in biochemical research for labeling proteins or other macromolecules via its reactive chlorotriazine group.
• Specialty Pigment Production: Serves as a precursor for creating complex, high-performance organic pigments.

Basic Information

Product Name	Trisodium 2-[[4-[[4-[(4,6-Dichloro-1,3,5-Triazin-2-Yl)Amino]-5-Sulphonato-1-Naphthyl]Azo]-2,5-Dimethylphenyl]Azo]Benzene-1,4-Disulphonate
CAS No.	68892-31-9
Molecular Formula	C33H20Cl2N8Na3O10S3
Molecular Weight	933.62 g/mol
Synonyms	Reactive Black 5 Intermediate; C.I. Reactive Black 5, Trisodium Salt; Trisodium 4-Amino-5-hydroxy-6-[[4-[[2-(sulfonatooxy)ethyl]sulfonyl]phenyl]azo]naphthalene-2,7-disulfonate (related isomer); 2-Naphthalenesulfonic acid, 4-amino-5-hydroxy-6-[[4-[[2-(sulfonatooxy)ethyl]sulfonyl]phenyl]azo]-, trisodium salt; Chlorotriazine Azo Dye Intermediate; Reactive Dye Precursor CAS 68892-31-9
EINECS	Contact for details

Quality Control

Our production of Trisodium 2-[[4-[[4-[(4,6-Dichloro-1,3,5-Triazin-2-Yl)Amino]-5-Sulphonato-1-Naphthyl]Azo]-2,5-Dimethylphenyl]Azo]Benzene-1,4-Disulphonate adheres to stringent quality protocols to ensure batch-to-batch consistency and performance in downstream synthesis. Each lot is analyzed for critical parameters including purity, reactive group content, and impurity profile. Certificates of Analysis (COA) documenting these results are available upon request to support your quality assurance and regulatory compliance needs.

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 product is hygroscopic (moisture-sensitive) and must be kept in a dry environment to prevent degradation and clumping.

Specification

Item	Specification
Appearance	Dark blue to black powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm

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