PW 7 – zinc sulfide PW 7 – zinc sulfide Together with barium sulfate, it makes lithopone Manufacturer/ product code: Kremer / 46350Chemical Description: zinc sulfideColor: whiteColor Index: PW 7Date: 1852 Reflectance Spectroscopy (350-950 nm) Reflectance Spectroscopy (200-1250 nm) Reflectance Spectroscopy (950-1700 nm) XRF Spectroscopy Raman Spectroscopy (532 nm) FTIR Spectroscopy (non-invasive )