The invention relates to crystals (C) consisting of at least 98 % by weight of 4,4'- dichlorodiphenylsulfone, 0 to 2 % by weight of impurities and 0 to 2 % by weight of at least one solvent (c). Moreover, the present invention relates to a crystal composition (CC) comprising crystals (C) and a process for the production of the crystal composition (CC) and the crystals (C).
该发明涉及由至少98%重量的4,4'-二
氯二苯基砜(C)组成的晶体,0至2%重量的杂质和0至2%重量的至少一种溶剂(c)。此外,本发明涉及包括晶体(C)的晶体组合物(CC)以及用于生产晶体组合物(CC)和晶体(C)的工艺。