Patent ID: 7557253

Claim:
A process for preparing dichloropropanol, comprising: (a) reacting glycerol, an ester of glycerol or a mixture thereof with a chlorinating agent in the presence of an organic acid so as to give a mixture comprising dichloropropanol, at least one dichloropropanol ester, and water; (b) subjecting at least a fraction of the mixture obtained in (a) to a distillation and/or stripping treatment so as to give a part concentrated with water, with dichloropropanol and with at least one dichloropropanol ester; and (c) subjecting at least a fraction of the part obtained in (b) to a separating operation in the presence of at least one additive so as to give a portion concentrated with dichloropropanol and at least one dichloropropanol ester and comprising less than 40% by weight of water, wherein the additive present in (c) comprises an inorganic acid, an inorganic salt or a mixture of the two and wherein said separating operation is a decantation having a decantation time of less than or equal to 120 minutes.