PBr 23 – disazo brown PBr 23 – disazo brown Manufacturer/ product code: Kremer / 23493Chemical Description: disazo condensationColor: redColor Index: PBr 23Date: — Reflectance Spectroscopy (350-950 nm) Reflectance Spectroscopy (200-1250 nm) Reflectance Spectroscopy (950-1700 nm) XRF Spectroscopy Raman Spectroscopy (785 nm) Raman Spectroscopy (830 nm) Raman Spectroscopy (1064 nm) FTIR Spectroscopy (non-invasive )