Beschreibung
VIS-683 Pentamethine- is een cyanine PF6- polymethinekleurstof met CAS-nummer 1526918-65-9 en de empirische formule C₄₃H₅₀ClF₆N₂P. Het vertoont een absorptiemaximum in methanol van 683 nm en een molaire massa van 775,30 g/mol, met EG-nummer 813-225-1. De gedefinieerde cyanine PF6- chromofoor ondersteunt spectroscopische, optische en kleurtoepassingen waarbij een absorptieprofiel in het zichtbare bereik nabij 683 nm is vereist. Materiaal van fabrikant Carl ROTH wordt gepresenteerd voor een eenvoudige hantering in onderzoeks- en analytische omgevingen. Laboratoria kunnen VIS-683 Pentamethine- inzetten bij methodeontwikkeling, kalibratiereeksen en vergelijkende kleurstofstudies die gebaseerd zijn op polymethinestructuren. De compacte verpakking is geschikt voor nauwkeurig wegen en experimenten op kleine schaal. Als gespecialiseerd kleurstoffereagens vormt het een aanvulling op bredere inventarissen van chemicaliën en kleurstoffen gericht op polymethinesystemen en verwante pigmentchemie.
Dit artikel hoort bij Fotometers & spectrofotometers, in Spectroscopie & fotometrie.
Belangrijkste kenmerken
- CAS-nummer: 1526918-65-9
- Verpakkingsgrootten: 1 g, 5 g, 10 g
- EG nr.: 813-225-1
- Empirische formule: C₄₃H₅₀ClF₆N₂P
- Molaire massa: 775,30 g/mol
- Technisch informatieblad:
- Veiligheidsinformatieblad:
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Questions about S 2086 - FEW Chemicals, 683 nm in MeOH, 1 g, glas
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S 2086 - FEW Chemicals, 683 nm in MeOH, 1 g, glas is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Photometers & spectrophotometers, inside Spectroscopy & photometry, in Präzisionsinstrumente.
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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