作废 HG/T 2621-1994
气相色谱法测定酚醛树脂中残留苯酚含量 气相色谱法测定酚醛树脂中残留苯酚含量
发布日期:1994-04-13
实施日期:1995-01-01
分类信息
标准简介

本标准规定了用气相色谱法测定酚醛树脂中残留苯酚含量的方法,测定微量酚[<0.5% m/m)]时,须改进本标准。 本标准不适用于碱性树脂,因苯酚呈酚盐形式存在,不能全部出峰

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最后更新时间 2025-08-29