Patent ID: 8344185

Claim:
A process for preparing dichloropropanol comprising reacting glycerol, an ester of glycerol or a mixture thereof with hydrogen chloride wherein the hydrogen chloride is (I) gaseous hydrogen chloride comprising not more than 15% by volume of water and not more than 5% by volume of nitrogen, or (III) a combination thereof of gaseous hydrogen chloride comprising not more than 15% by volume of water and not more than 5% by volume of nitrogen and an aqueous solution of hydrogen chloride, and wherein the hydrogen chloride comprises at least one of the following substances in a positive amount not exceeding the maxima indicated below, where the amount calculated in the gaseous hydrogen chloride does not take into account the water and nitrogen and in the aqueous solution of hydrogen chloride does not take into account the water: oxygen: 5% by volume hydrogen: 0.1% by volume chlorine: 2000 ppm by volume methane: 10 000 ppm by volume carbon monoxide: 10 000 ppm by volume carbon dioxide: 10 000 ppm by volume organic hydrocarbon products: 50 000 ppm by volume organic chlorine products: 50 000 ppm by volume organic fluorine products: 50 000 ppm by volume organic oxygen products: 50 000 ppm by volume propylene: 10 000 ppm by volume monochloropropenes: 15 000 ppm by volume chloropropane: 10 000 ppm by volume, organic oxygen compounds: 5000 ppm by volume, and in addition to the above, when the hydrogen chloride includes an aqueous solution of hydrogen chloride: metals, taken individually: 5 ppm by weight.