Patent ID: 8106245

Claim:
A process for preparing dichloropropanol wherein glycerol whose total metal content, expressed in elemental form, is greater than or equal to 0.1 μg/kg and less than or equal to 500 mg/kg is reacted with a chlorinating agent, wherein said process is further characterized by at least one of the following features: the iron content of the glycerol is less than or equal to 100 mg/kg the nickel content of the glycerol is less than or equal to 10 mg/kg the chromium content of the glycerol is less than or equal to 10 mg/kg the copper content of the glycerol is less than or equal to 10 mg/kg the cumulative lead, arsenic and cobalt content of the glycerol is less than or equal to 5 mg/kg the titanium content of the glycerol is less than or equal to 10 mg/kg the cumulative titanium, vanadium, tin and tellurium content of the glycerol is less than or equal to 10 mg/kg the cumulative cadmium and antimony content of the glycerol is less than or equal to 5 mg/kg the mercury content of the glycerol is less than or equal to 1 mg/kg the zinc content of the glycerol is less than or equal to 10 mg/kg the cumulative selenium and zinc content of the glycerol is less than or equal to 12 mg/kg the cumulative sodium and calcium content of the glycerol is less than or equal to 50 mg/kg the aluminium content of the glycerol is less than or equal to 10 mg/kg, and the bismuth content of the glycerol is less than or equal to 5 mg/kg.