The invention relates to a crystal (C) consisting of at least 95% by weight of 4,4′-dichlorodiphenylsulfoxide, 0 to 2% by weight of impurities and 0 to 3% by weight of an organic solvent (os). 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 crystal (C).
本发明涉及一种晶体(C),由至少 95%(重量)的 4,4′-二
氯二苯基亚砜、0 至 2%(重量)的杂质和 0 至 3%(重量)的有机溶剂(os)组成。此外,本发明还涉及一种包含晶体(C)的晶体组合物(CC),以及生产晶体组合物(CC)和晶体(C)的工艺。