Description

1H-Indene-1,3(2H)-Dione, 2-(2-Quinolinyl)-, Sulfonated, Sodium Salts is a specialized, high-value organic intermediate and functional dye precursor, recognized for its unique sulfonated quinoline-indandione structure. This compound matters for its ability to impart specific optical and chemical properties, making it a critical component in advanced material synthesis. Industrial and research professionals in the photographic chemicals, optical brighteners, and specialty dye manufacturing sectors require this material for developing high-performance products.

Application

• Photographic Sensitizers and Dyes: Acts as a key intermediate in the synthesis of cyanine and other polymethine dyes used in silver halide photography and digital imaging technologies.
• Optical Brightening Agents (OBAs): Serves as a precursor for fluorescent whitening agents applied in paper, textiles, and detergent formulations.
• Laser Dyes and Nonlinear Optical Materials: Utilized in the research and development of dyes for tunable lasers and materials with specific light-absorbing or emitting properties.
• Analytical Chemistry Reagents: Functions as a complexing agent or chromogenic substrate in specific spectrophotometric detection methods.
• Specialty Pigments and Inks: Used in the formulation of high-value, color-fast pigments for security inks, artists' colors, and specialty coatings.
• Biomedical Staining: Investigated for use as a fluorescent stain or tag in histological and cytological applications.
• Organic Semiconductor Research: Explored as a building block for novel organic electronic materials due to its conjugated system.
• Corrosion Inhibitor Intermediate: Potential use in synthesizing compounds that protect metals in harsh environments.

Basic Information

Item	Detail
Product Name	1H-Indene-1,3(2H)-Dione, 2-(2-Quinolinyl)-, Sulfonated, Sodium Salts
CAS No.	95193-83-2
Molecular Formula	C18H9NNaO5S (Typical for monosulfonated sodium salt)
Molecular Weight	~374.3 g/mol (Contact for exact confirmed weight)
Synonyms	2-(2-Quinolinyl)-1H-indene-1,3(2H)-dione sulfonated sodium salt; Sodium 2-(quinolin-2-yl)-1,3-dioxo-2,3-dihydro-1H-indene-5-sulfonate; Quinoline Yellow Intermediate (related); Sulfonated Quinophthalone Derivative; Acid Yellow 3 Related Compound; C.I. 47005 Sodium Salt Derivative; 2-(2-Quinolyl)indan-1,3-dione sulfonate sodium salt; Photo Sensitizer Dye Intermediate
EINECS	Contact for details

Quality Control

Our production of 1H-Indene-1,3(2H)-Dione, 2-(2-Quinolinyl)-, Sulfonated, Sodium Salts adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and compliance with agreed specifications. Certificates of Analysis (COA) documenting key parameters are provided as standard, ensuring full traceability and reliability for your critical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, 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 opening to prevent absorption of atmospheric moisture, which may affect performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Yellow to orange-brown powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0% (Typical, higher grades available)
Water Content (KF)	≤ 5.0%
Residue on Ignition (Sulfated Ash)	Contact for details
Heavy Metals (as Pb)	< 20 ppm
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.