标准摘要
[中文适用范围]： 一种测定酚醛模制品中游离酚含量的半定量方法。 热水萃取粉末状测试部分中的游离酚，对水萃取物进行碘化，并用标准容量硫代硫酸盐溶液反滴定过量的碘。 [外文原描述]： A semiquantitative method for the determination of the amount of free phenols in phenolic mouldings. Hot water extraction of free phenols from a powdered test portion, iodination of the water extract and backtitration of the excess of iodine with standard volumetric thiosulfate solution.
英文名称Plastics — Phenol-formaldehyde mouldings — Determination of free phenols — Iodometric method