... weight: 151.99 CAS No.: 1308-38-9 Color index: pigment green 17 Melt Point: 2435°C Boiling point: 3000°C ... .05%Cr+6 PPM 5PPM 3PPMUsage: Pigment,paint,glass,building ceramic colorants,printing-ink,chrome plating,chromium metal production,fire-proof materials ...