Description

3,3'-Diethyl-9-Methylthiacarbocyanine Iodide is a synthetic organic dye belonging to the cyanine family, characterized by its distinct chromophore structure. This compound is valued for its strong light absorption and fluorescence properties in the visible to near-infrared spectrum, making it a critical functional material. It is primarily sought after by research institutions and manufacturers in the fields of photographic sensitization, optical data storage, and as a laser dye or fluorescent probe for analytical and diagnostic applications.

Application

• Photographic Sensitizer: Used in silver halide photographic emulsions to extend spectral sensitivity.
• Optical Data Storage: Acts as a recording medium in writable optical discs (e.g., CD-R, DVD-R).
• Laser Dye: Employed as an active medium in tunable dye lasers for research and spectroscopy.
• Fluorescent Labeling/Probe: Utilized in bio-imaging, flow cytometry, and other diagnostic assays due to its fluorescence.
• Non-linear Optics (NLO): Investigated for applications in photonics and electro-optical devices.
• Solar Cell Research: Studied as a potential photosensitizer in dye-sensitized solar cells (DSSCs).

Basic Information

Product Name	3,3'-Diethyl-9-Methylthiacarbocyanine Iodide
CAS No.	3065-79-0
Molecular Formula	C23H23IN2S2
Molecular Weight	510.47 g/mol
Synonyms	3,3'-Diethyl-9-methylthiacarbocyanine iodide; 9-Methyl-3,3'-diethylthiacarbocyanine iodide; Thiacarbocyanine dye; Cryptocyanine; 2-[3-(1,3-Dihydro-1,3,3-trimethyl-2H-indol-2-ylidene)-1-propen-1-yl]-1,3,3-trimethyl-3H-indolium iodide; 1,1',3,3,3',3'-Hexamethylindotricarbocyanine iodide (related class); Dye content 90% (typical grade specification).
EINECS	Contact for details

Quality Control

Our production of 3,3'-Diethyl-9-Methylthiacarbocyanine Iodide adheres to stringent internal quality standards to ensure batch-to-batch consistency and performance reliability. Each lot is characterized using advanced analytical techniques, with key parameters including dye content, absorbance/fluorescence spectra, and purity being rigorously verified. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment to support your quality assurance protocols.

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 (store away from light) and should be handled in a manner to minimize prolonged exposure to ambient light and moisture.

Specification

Item	Specification
Appearance	Dark green to bronze crystalline powder
Identification (IR)	Conforms to structure
Dye Content	≥ 90.0%
Absorption Max (λmax)	~650 nm (in methanol)
Loss on Drying	≤ 2.0%
Residue on Ignition (Sulfated Ash)	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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