Description

Tetrasodium 1-[1,5-dihydro-3-methyl-5-oxo-1-(4-sulphonatophenyl)-4H-pyrazol-4-ylidene]-3-[3-methyl-5-oxido-1-(4-sulphonatophenyl)-1H-pyrazol-4-yl]-1H-indene-2-carboxylate is a high-purity, water-soluble organic dye intermediate characterized by its complex polycyclic structure with multiple sulfonate groups. This compound matters for its role as a key precursor in the synthesis of advanced, high-performance dyes and pigments, offering excellent color fastness and solubility. Industries that require sophisticated colorants, such as textile manufacturing, inkjet printing, and specialty coatings, rely on this intermediate for producing vibrant and stable colors. Its consistent quality is critical for ensuring batch-to-batch reproducibility in demanding industrial applications.

Application

• Primary Intermediate for Reactive Dyes: A crucial building block in the synthesis of high-grade reactive dyes for cotton and other cellulose fibers.
• Specialty Pigment Manufacturing: Used in the production of complex organic pigments for automotive paints, industrial coatings, and plastics.
• Inkjet Ink Formulations: Serves as a key component in the manufacture of high-quality, water-based dye inks for commercial and industrial printing.
• Functional Dye Synthesis: Employed in creating dyes for specialized applications, including optical data storage, laser marking, and security printing.
• Textile Colorants: Integral to producing dyes that offer superior wash-fastness, light-fastness, and brightness for the textile industry.
• Research & Development: Used in chemical R&D for developing new chromophores and studying structure-property relationships in dye chemistry.

Basic Information

Product Name	Tetrasodium 1-[1,5-dihydro-3-methyl-5-oxo-1-(4-sulphonatophenyl)-4H-pyrazol-4-ylidene]-3-[3-methyl-5-oxido-1-(4-sulphonatophenyl)-1H-pyrazol-4-yl]-1H-indene-2-carboxylate
CAS No.	85006-14-0
Molecular Formula	C39H24N4Na4O14S2
Molecular Weight	914.71 g/mol
Synonyms	Tetrasodium 1,3-bis(3-methyl-5-oxo-1-(4-sulfonatophenyl)-1H-pyrazol-4(5H)-ylidene)isoindoline-2-carboxylate; C.I. Reactive Yellow 176 intermediate; Tetrasodium 1,3-bis(3-methyl-5-oxo-1-(4-sulfophenyl)-1H-pyrazol-4-ylidene)isoindoline-2-carboxylate; Reactive Dye Intermediate Y-176; Tetrasodium 1,3-bis[3-methyl-4-oxo-1-(4-sulfonatophenyl)-2-pyrazolin-5-ylidene]isoindoline-2-carboxylate; 85006-14-0; PYRAZOLONE DYE INTERMEDIATE
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to stringent quality control protocols to ensure it meets the exacting standards required for high-performance colorant synthesis. Each batch is analyzed using advanced techniques like HPLC and spectrophotometry to verify chemical identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications is provided with every shipment, supporting your own 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 a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after each use to prevent moisture absorption, which can affect product stability and performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Yellow to orange-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture (KF Titration)	≤ 5.0%
Sulfated Ash	≤ 20.0%
Solubility (in Water)	Clear solution
Heavy Metals (as Pb)	≤ 20 ppm

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