Description

Oxonol 595 is a near-infrared absorbing cyanine dye belonging to the oxonol class of polymethine compounds. This product is valued for its strong and stable absorption properties in the NIR region, making it a critical functional material for advanced optical applications. It is primarily utilized by researchers and manufacturers in the photonics, analytical chemistry, and materials science sectors.

Application

• Laser Dye and Optical Filters: Used as a saturable absorber or gain medium in tunable dye lasers operating in the near-infrared spectrum.
• Photodynamic Therapy (PDT) Research: Investigated as a potential photosensitizer due to its deep tissue penetration capabilities of NIR light.
• Non-Linear Optics (NLO): Employed in the development of optical limiters, switches, and other devices exploiting its NLO properties.
• Analytical Chemistry: Functions as a spectroscopic probe or label in bioimaging and sensor applications targeting the NIR window.
• Organic Photovoltaics & Electronics: Serves as an active layer component in research for organic solar cells and photodetectors due to its light-harvesting characteristics.
• Security Inks and Dyes: Incorporated into formulations for anti-counterfeiting features that are visible only under specific NIR illumination.

Basic Information

Product Name	Oxonol 595
CAS No.	88969-31-7
Molecular Formula	C29H31N2O6S3- • Na+
Molecular Weight	622.73 g/mol
Synonyms	Oxonol V; NK 595; 2-[7-(1,3-Dihydro-1,3,3-trimethyl-2H-indol-2-ylidene)-1,3,5-heptatrienyl]-1,3,3-trimethyl-3H-indolium salt; Bis(1,3,3-trimethylindolenine) pentamethine oxonol; NIR Dye NK-595; 5,5'-Dipropyl-2,2'-oxadicarbocyanine sodium salt (related structure)
EINECS	Contact for details

Quality Control

Our Oxonol 595 is produced under strict quality management protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including HPLC for purity, UV-Vis-NIR spectroscopy for absorbance profile verification, and identity confirmation. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to support your quality assurance and R&D documentation.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and should be handled in a dry environment to prevent degradation. Keep the container tightly sealed when not in use.

Specification

Item	Specification
Appearance	Dark green to black powder or crystals
Identification (UV-Vis)	Conforms to reference spectrum
Purity (HPLC)	≥ 95.0%
λmax (Absorption Maximum)	595 ± 5 nm (in suitable solvent)
Extinction Coefficient (ε)	≥ 150,000 L·mol-1·cm-1
Loss on Drying	≤ 2.0 %
Residue on Ignition (Sulfated Ash)	≤ 1.0 %

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