Description

Dicyanine A CAS NO 20591-23-5 is a specialized cyanine dye belonging to the polymethine class, known for its distinct spectral properties. This compound is valued for its ability to absorb and emit light within specific wavelength ranges, making it a critical functional material. It is primarily sought after by manufacturers and researchers in the advanced materials, optical recording media, and biomedical imaging sectors for its performance in high-tech applications.

Application

• Optical Data Storage: As a key photosensitive component in the manufacturing of recordable (R) and rewritable (RW) optical discs (e.g., CD-R, DVD±R).
• Laser Technology: Utilized as a saturable absorber or gain medium in tunable dye lasers for research and medical applications.
• Biomedical Imaging & Staining: Employed as a fluorescent probe or stain in biological research for cell imaging, flow cytometry, and nucleic acid detection.
• Photodynamic Therapy (PDT): Investigated for use as a photosensitizer in therapeutic applications targeting certain cells.
• Non-linear Optics (NLO): Used in the development of materials for optical limiting, switching, and frequency conversion due to its high polarizability.
• Sensors and Detectors: Incorporated into chemical sensors and photodetector systems for its specific light-responsive characteristics.

Basic Information

Product Name	Dicyanine A
CAS No.	20591-23-5
Molecular Formula	C29H35IN2
Molecular Weight	562.51 g/mol
Synonyms	1,1'-Diethyl-2,2'-cyanine iodide; 1-Ethyl-2-[(1-ethyl-2(1H)-quinolinylidene)methyl]quinolinium iodide; Quinoline Blue; Dicyanine; Astrazon Pink FG; Basic Violet 16; C.I. 48013
EINECS	243-904-3

Quality Control

Every batch of Dicyanine A is subjected to rigorous analytical testing to ensure it meets stringent purity and performance criteria. Our quality assurance protocol includes advanced chromatographic and spectroscopic methods to verify chemical identity and quantify impurities. A comprehensive Certificate of Analysis (COA) detailing purity, absorbance maxima, and other critical parameters is provided with each shipment to guarantee traceability and compliance with your specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). The product is light-sensitive and should be handled under subdued light whenever possible to prevent degradation. Keep the container tightly sealed when not in use to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Dark green to bronze crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Absorbance Maxima (in Methanol)	Contact for details
Loss on Drying	≤ 1.0 %
Residue on Ignition (Sulfated Ash)	≤ 0.5 %
Heavy Metals (as Pb)	≤ 20 ppm

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