Chromyl chloride

Chromium oxychlorideChromyl chloride is a chemical compound with the formula CrO2Cl2. This compound is a hygroscopic dark red liquid. The molecule is tetrahedral, like most commonly encountered chromium(VI) derivative chromate, 2−. In terms of physical properties and structure, it resembles SO2Cl2. Chromyl chloride is a chemical compound with the formula CrO2Cl2. This compound is a hygroscopic dark red liquid. The molecule is tetrahedral, like most commonly encountered chromium(VI) derivative chromate, 2−. In terms of physical properties and structure, it resembles SO2Cl2. Chromyl chloride can be prepared by mixing potassium chromate or potassium dichromate with sodium chloride and treating this mix with concentrated sulfuric acid, followed by gentle distillation. K2Cr2O7 + 4NaCl + 6H2SO4 → 2CrO2Cl2 + 2KHSO4 + 4NaHSO4 +3H2O