Description
VIS-682 Pentamethine-Cyanine PF6- is a polymethine dye offered as the cyanine hexafluorophosphate salt for visible-to-red optical applications. It is identified by CAS number 354540-12-8, the empirical formula C₄₁H₄₆ClF₆N₂P and a molar mass of 747,25 g/mol. Absorption measured in methanol reaches a maximum at 682 nm, locating the dye in the red region of the spectrum. The material is Data provided by manufacturer Carl ROTH facilitate its use in pentamethine cyanine research, spectroscopic method development and comparative studies of polymethine chromophores. The combination of a defined absorption wavelength, PF6- counter-ion and fully specified molecular formula makes the product a practical choice for laboratories working with red-absorbing cyanine dyes.
This article belongs on Photometers & spectrophotometers, in Spectroscopy & photometry.
Key features
- CAS number: 354540-12-8
- Pack sizes: 1 g, 5 g, 10 g
- EG nr.: 812-325-2
- Empirical formula: C₄₁H₄₆ClF₆N₂P
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
Warning
Hazard Statements (H-Phrases)
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Questions about S 0366 - FEW Chemicals, 682 nm in MeOH, 1 g, glass
What is this article?
S 0366 - FEW Chemicals, 682 nm in MeOH, 1 g, glass is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Photometers & spectrophotometers, inside Spectroscopy & photometry, in Lab instruments.
A photometer reads absorbance at one or a few wavelengths. A spectrophotometer scans or selects many. Both send light through a cuvette or a well. The wavelength range, UV or visible, and the bandwidth decide what can be measured. A visible-only instrument cannot read a nucleic acid at 260 nm.
A photometer or spectrophotometer sends light through a sample and reads how much was absorbed. In the range where the Beer–Lambert relation holds, absorbance tracks concentration. A refractometer reads how a liquid bends light, which tracks dissolved solids. A polarimeter reads the rotation of polarised light, the classical measurement for sugars. The lamp, the wavelength and the cuvette path length are the three things that have to be right before the number means anything. The optical quantities trace to NIST and the BIPM.
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The category is Spectroscopy & photometry. The sub-category is Photometers & spectrophotometers. The catalogue is Lab instruments.
Shelves beside this one are Refractometers & polarimeters and Lamps, cuvette holders & accessories.
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