PR 168 – anthraquinone scarlet PR 168 – anthraquinone scarlet Manufacturer/ product code: Kremer / 23200Chemical Description: brominated anthranthrone;Color: redColor Index: PR 168Date: 1913 Reflectance Spectroscopy (350-950 nm) Reflectance Spectroscopy (200-1250 nm) Reflectance Spectroscopy (950-1700 nm) XRF Spectroscopy Raman Spectroscopy (532 nm) Raman Spectroscopy (830 nm) Raman Spectroscopy (1064 nm) FTIR Spectroscopy (non-invasive )