本文件规定了皮革中游离甲醛和释放甲醛的测定方法。该方法基于比色分析，不用于甲醛的精确定量。 甲醛含量是指在标准条件下，通过水解从皮革水提取物中提取的游离甲醛和甲醛的量。 这个过程对甲醛不是绝对有选择性的。其他化合物，如提取染料，在412nm处可能会产生干扰。

This document specifies a method for the determination of free and released formaldehyde in leathers. This method, based on colorimetric analysis, is not intended to be used for a precise quantification of formaldehyde. The formaldehyde content is taken to be the quantity of free-formaldehyde and formaldehyde extracted through hydrolysis contained in a water extract from the leather under standard conditions. This process is not absolutely selective for formaldehyde. Other compounds such as extracted dyes could interfere at 412 nm.