A polycarboxylic acid mixture comprising 80% by weight or more of 1,3,6-hexanetricarboxylic acid, wherein the polycarboxylic acid mixture has a psychometric lightness L-value of 98 or more, a psychometric chroma a-value of from −2.0 to 2.0 and a psychometric chroma b-value of from −2.0 to 3.0, and has a nitrogen content of 5,000 ppm by weight or less.
一种聚
羧酸混合物,包含 80% 或更多重量的 1,3,6-己烷
三羧酸,其中该聚
羧酸混合物的心理光度 L 值为 98 或更高,心理色度 a 值为-2.0 至 2.0,心理色度 b 值为-2.0 至 3.0,
氮含量为 5,000 ppm 或更少(以重量计)。