PY 154 – benzimidazolone yellow H3G PY 154 – benzimidazolone yellow H3G It is considered a good primary yellow Manufacturer/ product code: Kremer / 23310Chemical Description: organic benzimidazoloneColor: yellowColor Index: PY 154Date: from 1960 Reflectance Spectroscopy (350-950 nm) Reflectance Spectroscopy (200-1250 nm) Reflectance Spectroscopy (950-1700 nm) XRF Spectroscopy Raman Spectroscopy (532 nm) Raman Spectroscopy (785 nm) Raman Spectroscopy (830 nm) Raman Spectroscopy (1064 nm) FTIR Spectroscopy (non-invasive )