ISO 5796-2000 橡胶配合剂 天然碳酸钙 试验方法

标准号：ISO 5796-2000
中文标准名称：橡胶配合剂 天然碳酸钙 试验方法
英文标准名称：Rubber compounding ingredients - Natural calcium carbonate - Test methods
标准类型：G34
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：G34
国际标准分类号：83.040.20
适用范围：1 This International Standard specifies the methods to be used for the evaluation of natural calcium carbonate (chalk or limestone) ground to a dry powder for use in the rubber industry. NOTE 1 Classification of natural calcium carbonate according to fineness and chemical purity and typical physical and chemical properties for use in the rubber industry are given in informative annex D. NOTE 2 This International Standard does not cover calcium carbonates prepared by precipitation from solution. 2 There are two sets of analytical methods listed in this International Standard. In the body of the text (4.8.2 to 4.8.4), the traditional spectrophotometric methods are given; these are obsolescent, time-consuming and use a chlorinated solvent. It is recommended that these methods be phased out and replaced by the atomic absorption methods listed in annexes A, B and C.