1.Appearance and descriptionï¼? Zirconium tetrachloride is white shiny crystal or powder, Â it is highly deliquescent. Cas No.:10026-11-6 Name: zirconium tetrachloride Chemical formula: Zrcl4Â Molecular Weight: 233.20 Density: Â Relative density (water=1) 2.80 Vapor Pressure: Â 0.13kPa(190â??) Melting : ï¼? 300â?? Boiling point: Â 331â??/ sublimation