Process for reducing the chlorine content in an organobisphosphite of one of the general formulae I, II, III, IV, V and VI: where R 1, R 2, R 3, R 4, R 5, R 6, R 7, R 8, R 9 are each independently selected from: -H, -(C 1 -C 12)-alkyl, -O-(C 1 -C 12)-alkyl,-O-(C 6 -C 20)-aryl, -(C 6 -C 20)-aryl, halogen, -COO-(C 1 -C 12)-alkyl, -CONH-(C 1 -C 12)-alkyl, -(C 6 -C 20)-aryl-CON[(C 1 -C 12)-alkyl] 2, -CO-(C 1 -C 12)-alkyl, -CO-(C 6 -C 20)-aryl, -COOH,-OH, -SO 3 H, -SO 3 Na, -NO 2, -CN, -NH 2, -N[(C 1 -C 12)-alkyl] 2; and the four following pairs of radicals are not both the same radical in all four pairs: R 1 and R 5, R 2 and R 6, R 3 and R 7, R 4 and R 8; comprising the process steps of: a) partly or fully dissolving the organobisphosphite in a first solution, b) introducing the first solution into a second solution, which results in precipitation of the purified organobisphosphite, wherein the first solution comprises a first solvent and a first base, the second solution comprises a second solvent and a second base, and the first solvent is selected from: aromatics, alcohols, acetone, ethyl acetate, acetonitrile, ethers, the second solvent is selected from: aromatics, C5-C10-alkanes, alcohols, acetone, ethyl acetate, acetonitrile, ethers, the first base is selected from: amine bases, alkoxides, pyridine, pyridine derivatives, N-methyl-2-pyrrolidone, triethanolamine, the second base is selected from: amine bases, alkoxides, pyridine, pyridine derivatives, N-methyl-2-pyrrolidone, triethanolamine, and the organobisphosphite has better solubility in the first solvent than in the second solvent. R 1, R 2, R 3, R 4, R 5, R 6, R 7, R 8, R 9 are each independently selected from: -H, -(C 1 -C 12)-alkyl, -O-(C 1 -C 12)-alkyl,-O-(C 6 -C 20)-aryl, -(C 6 -C 20)-aryl, halogen, -COO-(C 1 -C 12)-alkyl, -CONH-(C 1 -C 12)-alkyl, -(C 6 -C 20)-aryl-CON[(C 1 -C 12)-alkyl] 2, -CO-(C 1 -C 12)-alkyl, -CO-(C 6 -C 20)-aryl, -COOH,-OH, -SO 3 H, -SO 3 Na, -NO 2, -CN, -NH 2, -N[(C 1 -C 12)-alkyl] 2; and the four following pairs of radicals are not both the same radical in all four pairs: R 1 and R 5, R 2 and R 6, R 3 and R 7, R 4 and R 8; comprising the process steps of: a) partly or fully dissolving the organobisphosphite in a first solution, b) introducing the first solution into a second solution, which results in precipitation of the purified organobisphosphite, wherein a) partly or fully dissolving the organobisphosphite in a first solution, b) introducing the first solution into a second solution, which results in precipitation of the purified organobisphosphite, the first solution comprises a first solvent and a first base, the second solution comprises a second solvent and a second base, and the first solvent is selected from: aromatics, alcohols, acetone, ethyl acetate, acetonitrile, ethers, aromatics, alcohols, acetone, ethyl acetate, acetonitrile, ethers, the second solvent is selected from: aromatics, C5-C10-alkanes, alcohols, acetone, ethyl acetate, acetonitrile, ethers, aromatics, C5-C10-alkanes, alcohols, acetone, ethyl acetate, acetonitrile, ethers, the first base is selected from: amine bases, alkoxides, pyridine, pyridine derivatives, N-methyl-2-pyrrolidone, triethanolamine, amine bases, alkoxides, pyridine, pyridine derivatives, N-methyl-2-pyrrolidone, triethanolamine, the second base is selected from: amine bases, alkoxides, pyridine, pyridine derivatives, N-methyl-2-pyrrolidone, triethanolamine, and the organobisphosphite has better solubility in the first solvent than in the second solvent. amine bases, alkoxides, pyridine, pyridine derivatives, N-methyl-2-pyrrolidone, triethanolamine, and the organobisphosphite has better solubility in the first solvent than in the second solvent.