1.1 本试验方法包括炭黑碘吸附数的测定。 1.1.1 方法A是该测定的原始检测方法，方法B是使用自动化样品处理和分析的替代检测方法。 1.2 炭黑的碘吸附数随着样品老化而降低。已经生产了在老化时显示稳定碘值的碘值参考材料。建议使用这些标准物质中的一种或多种进行日常监测（x图），以确保结果在单个标准物质的控制限度内。使用一组碘编号标准物质中的所有碘值标准物质进行碘检测的标准化（参见 8 ）当无法获得目标值时。 1.3 以SI单位表示的值将被视为标准值。本标准不包括其他计量单位。 1.4 本标准并不旨在解决与其使用相关的所有安全性问题（如果有）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践并确定法规限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ======意义和用途====== 4.1 碘吸附数可用于表征炭黑。它与炭黑的表面积有关，并且通常与氮的表面积一致。挥发物、表面孔隙率或可提取物的存在将影响碘吸附数。炭黑的老化也会影响碘值。

1.1 This test method covers the determination of the iodine adsorption number of carbon black. 1.1.1 Method A is the original test method for this determination and Method B is an alternate test method using automated sample processing and analysis. 1.2 The iodine adsorption number of carbon black has been shown to decrease with sample aging. Iodine Number reference materials have been produced that exhibit stable iodine number upon aging. One or more of these reference materials are recommended for daily monitoring (x-charts) to ensure that the results are within the control limits of the individual reference material. Use all Iodine Number reference materials from a set for standardization of iodine testing (see Section 8 ) when target values cannot be obtained. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 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. ====== Significance And Use ====== 4.1 The iodine adsorption number is useful in characterizing carbon blacks. It is related to the surface area of carbon blacks and is generally in agreement with nitrogen surface area. The presence of volatiles, surface porosity, or extractables will influence the iodine adsorption number. Aging of carbon black can also influence the iodine number.