Description

4-Amino-3,6-Bis[[5-[[4-Chloro-6-[(4-Sulfophenyl)Amino]-1,3,5-Triazin-2-Yl]Amino]-2-Sulfophenyl]Azo]-5-Hydroxy-2,7-Naphthalene Disulfonic Acid Hexasodium Salt is a high-purity, water-soluble anionic dye intermediate of significant industrial importance. This compound is valued for its ability to impart strong, vibrant color and excellent light and wash fastness properties when incorporated into polymeric materials. It is primarily sought after by manufacturers in the textile, ink, and specialty polymer sectors who require reliable and consistent performance in demanding applications.

Application

• Reactive Dye Synthesis: A key intermediate for manufacturing high-grade reactive dyes used in cotton and cellulose fiber dyeing and printing.
• Textile Colorants: Imparts deep, stable shades with excellent fastness to light, washing, and perspiration in finished fabrics.
• Inkjet Inks: Used in the formulation of professional and industrial inks where color intensity and stability are critical.
• Paper Coloring: Employed in the production of specialty colored papers and coatings.
• Polymer Staining: Acts as a colorant for engineering plastics and synthetic fibers to achieve consistent batch-to-batch coloration.
• Biological Staining: Potential use as a histological stain in laboratory settings, subject to specific purity grades.
• Laser Dye Applications: Investigated for use in tunable dye lasers due to its specific chromophore structure.

Basic Information

Item	Detail
Product Name	4-Amino-3,6-Bis[[5-[[4-Chloro-6-[(4-Sulfophenyl)Amino]-1,3,5-Triazin-2-Yl]Amino]-2-Sulfophenyl]Azo]-5-Hydroxy-2,7-Naphthalene Disulfonic Acid Hexasodium Salt
CAS No.	115099-61-1
Molecular Formula	C44H24Cl2N16Na6O20S6
Molecular Weight	~1550.86 g/mol (Contact for exact details)
Synonyms	Reactive Black 5 (Hexasodium Salt); C.I. Reactive Black 5; Remazol Black B; Lanasol Black B; Drimarene Black B; Sumifix Black B; 4-Amino-5-hydroxy-3,6-bis((4-((4-chloro-6-((4-sulfophenyl)amino)-1,3,5-triazin-2-yl)amino)-3-sulfophenyl)diazenyl)-2,7-naphthalenedisulfonic acid hexasodium salt
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and performance reliability. Quality is verified through comprehensive analytical testing including HPLC for purity, spectrophotometry for strength, and stringent control of impurity profiles. A detailed Certificate of Analysis (COA) specifying purity, color strength, and solubility is provided with each shipment to support your quality assurance processes.

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 after opening to prevent moisture absorption, which can affect product performance and handling.

Specification

Item	Specification
Appearance	Dark blue to black powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 90% (Technical Grade)
Color Strength	100% ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	Clear solution at 1% w/v
Ash Content (as Sulfate)	≤ 30.0%
Heavy Metals (as Pb)	≤ 20 ppm

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