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Significance and Use
5.1 This test method is designed to determine the purity of p-phenylenediamine antidegradants.
5.2 Since the results of this test method are based on an integrated peak area as determined by HPLC, it is assumed that all analytes of interest are resolved from interfering peaks.
1.1 This test method covers the purity of Type I, II, and III p-phenylenediamine (PPD) antidegradants as described in Classification by high performance liquid chromatography (HPLC) using ultraviolet detection and external standard calculations.
1.2 Expertise in HPLC is necessary to the successful application of this test method.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D3853 Terminology Relating to Rubber and Rubber Latices--Abbreviations for Chemicals Used in Compounding
D4483 Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries
D4676 Classification for Rubber Compounding Materials--Antidegradants
ISO StandardsISO6472 Rubber Compounding Ingredients--Abbreviations
ICS Number Code 71.100.45 (Refrigerants and antifreezes)
UNSPSC Code 12352100(Organic derivatives and substituted compounds)
ASTM D5666-95(2014), Standard Test Method for Rubber Chemical Antidegradants—Purity of