Description

Disodium 2-[6-(6-Methyl-7-Sulphonatobenzothiazol-2-Yl)-2-Quinolyl]-1,3-Dioxoindan-5-Carboxylate is a high-purity, water-soluble organic salt compound, primarily valued for its role as a key intermediate in the synthesis of advanced functional dyes and optical brightening agents. Its complex molecular structure, featuring benzothiazole and quinoline moieties, provides excellent light-absorbing and fluorescent properties, making it critical for achieving specific color and performance characteristics. This product is essential for manufacturers in the specialty chemicals, textile auxiliaries, and high-performance pigment industries seeking to develop products with enhanced brightness and color fastness.

Application

• Primary Intermediate for Fluorescent Whitening Agents (FWAs): A crucial building block in the synthesis of high-efficiency optical brighteners used in detergents, paper, and textiles.
• Specialty Dye Synthesis: Used in the manufacture of complex heterocyclic dyes for technical applications requiring specific light absorption and emission profiles.
• Textile Chemical Auxiliaries: Incorporated into formulations to improve the brightness and visual appeal of synthetic fibers and fabrics.
• Functional Polymer Additives: Can be used to impart fluorescent properties to polymers for security, labeling, or optical applications.
• Research & Development: Serves as a valuable reference standard and starting material in organic chemistry R&D for novel chromophores.
• Analytical Reagent: Potential use as a fluorescent probe or marker in certain analytical chemistry methodologies.

Basic Information

Item	Details
Product Name	Disodium 2-[6-(6-Methyl-7-Sulphonatobenzothiazol-2-Yl)-2-Quinolyl]-1,3-Dioxoindan-5-Carboxylate
CAS No.	16249-87-9
Molecular Formula	C29H17N2Na2O8S2
Molecular Weight	630.55 g/mol
Synonyms	Disodium 2-[6-(6-methyl-7-sulphonatobenzothiazol-2-yl)-2-quinolyl]-1,3-dioxoindan-5-carboxylate; 2-[6-(6-Methyl-7-sulfo-2-benzothiazolyl)-2-quinolyl]-1,3-indandione-5-carboxylic acid disodium salt; Fluorescent Brightener intermediate; Optical Brightener Intermediate; FWA Intermediate; Benzenesulfonic acid, 2-(2-(1,3-dihydro-1,3-dioxo-5-isobenzofurancarboxylate)-6-quinolinyl)-6-methylbenzothiazole-7-sulfonate, disodium salt; CI Fluorescent Brightener 260 (related); Blankophor type intermediate
EINECS	Contact for details

Quality Control

Our production of Disodium 2-[6-(6-Methyl-7-Sulphonatobenzothiazol-2-Yl)-2-Quinolyl]-1,3-Dioxoindan-5-Carboxylate adheres to strict internal quality protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques like HPLC and NMR to confirm identity and quantify impurities. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and specific impurity limits is provided with every 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 (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Yellow to orange-yellow powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Related Substances (HPLC)	Total impurities ≤ 3.0%
Solubility (1% in Water)	Clear, yellow solution

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