Description

Tetrasodium 3-[[4-[[4-[(4-Amino-6-Chloro-1,3,5-Triazin-2-Yl)Amino]-5-Sulphonato-1-Naphthyl]Azo]-6-Sulphonato-1-Naphthyl]Azo]Naphthalene-1,5-Disulphonate is a high-purity, water-soluble reactive dye intermediate, specifically a polyazo dye containing a chlorotriazine reactive group. This compound is engineered to provide exceptional color strength and covalent bonding properties to substrates, ensuring superior wash and light fastness in finished products. It is a critical raw material for manufacturers in the textile, leather, and specialty paper industries seeking to produce vibrant, durable, and high-performance dyes and pigments.

Application

• Reactive Dye Synthesis: Primary intermediate for manufacturing high-grade reactive dyes for cotton, viscose, and other cellulosic fibers.
• Textile Coloration: Used in dyeing and printing processes to achieve brilliant shades of red, blue, and black with excellent fastness properties.
• Leather Finishing: Imparts deep, uniform color to leather goods with strong adhesion and resistance to rubbing.
• Paper Dyeing: Employed in the production of specialty colored papers, including decorative and security papers.
• Ink Formulation: A key component in the manufacture of inks for jet printing and other applications requiring high color value.
• Research & Development: Serves as a standard or building block in chemical research for developing new chromophores and functional dyes.

Basic Information

Product Name	Tetrasodium 3-[[4-[[4-[(4-Amino-6-Chloro-1,3,5-Triazin-2-Yl)Amino]-5-Sulphonato-1-Naphthyl]Azo]-6-Sulphonato-1-Naphthyl]Azo]Naphthalene-1,5-Disulphonate
CAS No.	71412-36-7
Molecular Formula	C41H22ClN11Na4O14S4
Molecular Weight	~1195.3 g/mol (as Tetrasodium salt)
Synonyms	Reactive Black 5 Intermediate; Tetrasodium 8-Amino-2-[[7-[[4-[(4,6-Dichloro-1,3,5-triazin-2-yl)amino]-3-sulfonato-1-naphthyl]azo]-1-hydroxy-3,6-disulfonato-2-naphthyl]azo]-1-naphthol-3,6-disulfonate; C.I. Reactive Black 5, Tetrasodium Salt; Polyazo Dye Intermediate; Chlorotriazine Reactive Dye; CAS 71412-36-7
EINECS	Contact for details

Quality Control

Every batch of our dye intermediate is produced under strict quality management systems to ensure consistency and purity. We employ advanced analytical techniques, including HPLC and spectrophotometry, to verify critical parameters such as assay, reactive group content, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing purity, strength, and physical specifications is provided with each shipment to support your quality assurance protocols.

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 sealed to prevent moisture absorption, which can affect product performance. Keep away from incompatible materials.

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
Reactive Group Content	≥ 98.0% of theory

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