ISO 4614-1977 塑料 三聚氰胺-甲醛模塑件 可萃取的甲醛的测定

标准号：ISO 4614-1977
中文标准名称：塑料 三聚氰胺-甲醛模塑件 可萃取的甲醛的测定
英文标准名称：Plastics; Melamine-formaldehyde mouldings; Determination of extractable formaldehyde
标准类型：G31
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：G31
国际标准分类号：83.140.99
适用范围：Liquids simulating fodd and beverages are placed in contact with mouldings of the sample material, under defined conditions. The formaldehyde content of the liquid is then determined and the quantity of formaldehyde extracted per unit area of content is calculated. Two spectrophotometric methods for the determination of formaldehyde in the liquid, using chromotropic acid disodium salt or acetylacetone as reagents, are given.