標準號：BS ISO 5796-2000
中文標準名稱：橡膠配合劑.天然碳酸鈣.試驗方法
英文標準名稱：Rubber compounding ingredients - Natural calcium carbonate - Test methods
標準類型：G40
發布日期：2000/11/15 12:00:00
實施日期：2000/11/15 12:00:00
中國標準分類號：G40
國際標準分類號：83.040.20
適用范圍：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.