Description

1H-Pyrazole-3-carboxylic acid, 1-[3-[[4-chloro-6-[(3-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-2-methyl-5-sulfophenyl]-4-[[4-[[4-chloro-6-[(3-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulfophenyl]azo]-4,5-dihydro-5-oxo-, tetrasodium is a high-value, complex azo dye intermediate featuring multiple reactive triazine and sulfonate groups. This compound is engineered to deliver superior color fastness and strong covalent bonding to substrates, making it a critical component for advanced textile and specialty chemical formulations. It is primarily utilized by manufacturers in the textile dyeing, ink, and high-performance pigment industries seeking to produce durable and vibrant colors.

Application

• Reactive Dye Synthesis: A key intermediate for manufacturing high-grade reactive dyes for cotton, wool, and nylon.
• Textile Printing Inks: Used in the formulation of inks for digital and screen printing on fabrics, offering excellent wash and light fastness.
• Specialty Pigments: Serves as a precursor for creating complex organic pigments used in coatings and plastics.
• Leather Dyeing: Employed in the production of dyes for leather, providing deep, uniform coloration with good adhesion.
• Paper Coloring: Suitable for the synthesis of dyes used in high-quality paper and packaging materials.
• Research & Development: A valuable building block in chemical R&D for developing new chromophores and functional dyes.

Basic Information

Product Name	1H-Pyrazole-3-carboxylic acid, 1-[3-[[4-chloro-6-[(3-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-2-methyl-5-sulfophenyl]-4-[[4-[[4-chloro-6-[(3-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulfophenyl]azo]-4,5-dihydro-5-oxo-, tetrasodium
CAS No.	71113-18-3
Molecular Formula	C40H22Cl2N16O14S4 · 4Na
Molecular Weight	Contact for details
Synonyms	Reactive Black 5 (Tetrasodium Salt); C.I. Reactive Black 5; Remazol Black B; Tetrasodium 1-[3-[[4-chloro-6-[(3-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-2-methyl-5-sulfophenyl]-4-[[4-[[4-chloro-6-[(3-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulfophenyl]azo]-5-oxo-4,5-dihydro-1H-pyrazole-3-carboxylate; Levafix Black EB; Sumifix Supra Black B; Procion Black H-EXL
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management systems. Every batch is analyzed to ensure consistent chemical composition, purity, and performance characteristics. Certificates of Analysis (COA) detailing key parameters such as assay, impurity profile, and color strength are provided and can be tailored to meet specific customer requirements and industry standards.

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 blue to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 90%
Moisture Content	Max. 5.0%
Water Solubility	Completely soluble
Heavy Metals (as Pb)	Max. 20 ppm
Color Strength	100% ± 5% (vs. Standard)

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