Leuco vat dye molecules rarely exist in the single-molecule forms, mostly in the dozens of molecular aggregates, or in the form of hundreds of moleculars, indicating that Leuco vat dye solution is not a true solution, but mainly in the range of colloid. 染料隐色体分子很少以单分子状态存在,大都以几十个分子的聚集体或缔合体形式存在,表明还原染料隐色体溶液不是真溶液,而主要是位于胶体范围分布。