BS EN ISO 1061-1999 塑料.未增塑的醋酸纤维素.游离酸度的测定

标准号：BS EN ISO 1061-1999
中文标准名称：塑料.未增塑的醋酸纤维素.游离酸度的测定
英文标准名称：Plastics - Unplasticized cellulose acetate - Determination of free acidity
标准类型：G31
发布日期：1999/10/15 12:00:00
实施日期：1999/10/15 12:00:00
中国标准分类号：G31
国际标准分类号：83.080.20
适用范围：This International Standard specifies a method for the determination of the amount of free acid in unplasticized cellulose acetate. The free acidity determined by this method includes acidity extractable by water and acidity due to acidic groups directly attached to the cellulose acetate, e.g. carboxyl groups. The latter is usually a very small proportion of the total. This method is not suitable for cellulose acetate containing any additives which may affect the test.