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5.1 This test procedure is used to determine the individual concentrations of the PAH compounds in the EU-8 list extracted from carbon black by the means of a Soxhlet extraction apparatus with toluene.1.1 This test method covers the qualitative and quantitative determination of the EU-8 list of polycyclic aromatic hydrocarbons (PAH) on carbon black. The EU-8 list of PAH compounds is given in Table 1. The procedure involves Soxhlet extraction with toluene followed by extract analysis using gas chromatography with mass spectrometry (GC/MS). This method is not intended to test for U.S. Food and Drug Administration (FDA 21 CFR 178.3297) compliance of carbon blacks used for indirect food contact applications.1.2 Units—The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard.1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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