ISO 119:1977 塑料.酚-甲醛模塑.单体酚的测定.碘量法

标准编号：ISO 119:1977

中文名称：塑料.酚-甲醛模塑.单体酚的测定.碘量法

英文名称：Plastics — Phenol-formaldehyde mouldings — Determination of free phenols — Iodometric method

发布日期：1977-10

标准范围

测定酚醛模塑件中游离酚含量的半定量方法。用热水从粉状试样中提取游离酚，对水提取物进行碘化，并用标准体积硫代硫酸盐溶液反滴定过量碘。

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.

标准预览图