1.1 本试验方法涵盖肥皂和合成洗涤剂中乙二胺四醋酸盐（EDTA）的测定。在本试验方法中，EDTA代表含有2摩尔H的水合二钠盐 2. O、 在化学文献中，这经常缩写为Na 2. H 2. Y 4. ·2小时 2. O。 1.2 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 试剂和材料有材料安全数据表。 使用前检查其危险性。

1.1 This test method covers the determination of ethylene diamine tetraacetate (EDTA) in soaps and synthetic detergents. Throughout this test method EDTA represents the hydrated disodium salt containing 2 moles of H 2 O. In the chemical literature this is frequently abbreviated to Na 2 H 2 Y 4 · 2H 2 O. 1.2 The values stated in SI units are to be regarded as 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 and health practices and determine the applicability of regulatory limitations prior to use. Material Safety Data Sheets are available for reagents and materials. Review them for hazards prior to usage.