Description

Trisodium 4-amino-3-[[4-(aminosulphonyl)phenyl]azo]-6-[[5-[(5-chloro-2,6-difluoro-4-pyrimidinyl)amino]-2-sulphonatophenyl]azo]-5-hydroxynaphthalene-2,7-disulphonate is a high-purity, water-soluble azo dye intermediate of significant commercial importance. This compound is engineered to deliver exceptional color strength, lightfastness, and thermal stability in demanding applications. It is primarily required by manufacturers in the textile, ink, and specialty coatings industries for producing high-performance pigments and dyes.

Application

• Textile Dyeing: A key intermediate for synthesizing reactive and direct dyes for cotton, wool, and nylon, offering excellent wash and light fastness.
• Inkjet Inks: Used in the formulation of high-quality pigment inks for industrial and commercial printing, providing vibrant color and durability.
• Specialty Coatings: Imparts color and UV resistance to coatings for plastics, automotive finishes, and industrial paints.
• Paper Coloring: Employed in the production of colored papers and paper products requiring consistent and bright hues.
• Functional Dye Synthesis: Serves as a precursor for dyes used in optical data storage, liquid crystal displays (LCDs), and other advanced materials.
• Leather Finishing: Used in dye formulations for leather goods to achieve deep, uniform, and long-lasting colors.

Basic Information

Product Name	Trisodium 4-amino-3-[[4-(aminosulphonyl)phenyl]azo]-6-[[5-[(5-chloro-2,6-difluoro-4-pyrimidinyl)amino]-2-sulphonatophenyl]azo]-5-hydroxynaphthalene-2,7-disulphonate
CAS No.	75199-18-7
Molecular Formula	C32H18ClF2N9Na3O14S4
Molecular Weight	Contact for details
Synonyms	Reactive Black 5 (related precursor); Azo Dye Intermediate 75199-18-7; Trisodium 5-amino-4-hydroxy-3,6-bis[[4-((5-chloro-2,6-difluoro-4-pyrimidinyl)amino)-2-sulfophenyl]azo]-2,7-naphthalenedisulfonate (alternative IUPAC); C.I. Reactive Black 31 (related); Sulfonated Azo Dye Intermediate; Chlorodifluoropyrimidinyl Azo Dye; High-Stability Azo Compound; Textile Dye Intermediate 75199-18-7
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management systems, ensuring batch-to-batch consistency and reliability. Quality is verified through comprehensive analytical methods including HPLC for purity, spectrophotometry for color value, and elemental analysis. A detailed Certificate of Analysis (COA) documenting identity, purity, and impurity profiles is provided with every 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 tightly sealed to prevent moisture absorption, which can affect product performance.

Specification

Item	Specification
Appearance	Dark blue to black powder or solid
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 95.0%
Color Strength	≥ 98% of standard
Moisture Content	≤ 5.0%
Water Solubility	Completely soluble
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.