Projekta Nr.ISO 5796:2000
Nosaukums<p><b>1.1 </b>This International Standard specifies the methods to be used for the evaluation of natural calcium carbonate</p> <p>(chalk or limestone) ground to a dry powder for use in the rubber industry.</p> <p>NOTE 1 Classification of natural calcium carbonate according to fineness and chemical purity and typical physical and</p> <p>chemical properties for use in the rubber industry are given in informative annex D.</p> <p>NOTE 2 This International Standard does not cover calcium carbonates prepared by precipitation from solution.</p> <p><b>1.2 </b>There are two sets of analytical methods listed in this International Standard. In the body of the text (4.8.2 to</p> <p>4.8.4), the traditional spectrophotometric methods are given; these are obsolescent, time-consuming and use a</p> <p>chlorinated solvent. It is recommended that these methods be phased out and replaced by the atomic absorption</p> <p>methods listed in annexes A, B and C.</p>
Reģistrācijas numurs (WIID)27011
Darbības sfēra<p><b>1.1 </b>This International Standard specifies the methods to be used for the evaluation of natural calcium carbonate</p> <p>(chalk or limestone) ground to a dry powder for use in the rubber industry.</p> <p>NOTE 1 Classification of natural calcium carbonate according to fineness and chemical purity and typical physical and</p> <p>chemical properties for use in the rubber industry are given in informative annex D.</p> <p>NOTE 2 This International Standard does not cover calcium carbonates prepared by precipitation from solution.</p> <p><b>1.2 </b>There are two sets of analytical methods listed in this International Standard. In the body of the text (4.8.2 to</p> <p>4.8.4), the traditional spectrophotometric methods are given; these are obsolescent, time-consuming and use a</p> <p>chlorinated solvent. It is recommended that these methods be phased out and replaced by the atomic absorption</p> <p>methods listed in annexes A, B and C.</p>
StatussStandarts spēkā
ICS grupa83.040.20