This part of GB/T 3780 specifies the test method of using the cetyl trimethylammonium bromide (CTAB) method to determine the external surface area of carbon black.
This part is applicable to rubber grade carbon black.
2 Normative References
The following standards contain provisions which, through reference in this part of GB/T 3780, constitute provisions of this part. For dated reference, subsequent modification to, or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this part are encouraged to study whether the latest edition of these documents is applicable. For undated references, the latest edition of the normative document is applicable to this part.
Contents Foreword I 1 Scope 2 Normative References 3 Principle 4 Reagents and Materials 5 Apparatus 6 Sampling 7 Test Condition 8 Analytical Procedure 9 Determination of Correlation Coefficient 10 Calculation 11 Calibration of CTAB Solution 12 Precision 13 Test Report Annex A (Informative) Comparison between Chapter and Article Numbers of this Part and Those of ASTM D 3765:2004 Annex B (Informative) Determination of Correlation Coefficient and Example of Calculation Annex C (Informative) CTAB Specific Surface Areas and STSA Reference Values of SRB Series Standard Reference Blacks
