【国外标准】 Standard Test Methods for Chemical Analysis of Sodium Chloride

3.1 Sodium chloride occurs in nature. It is a necessary article of diet as well as the source for production of many sodium compounds and chlorine. The methods listed in 1.2 provide procedures for analyzing sodium chloride to determine if it is suitable for its intended use.1.1 These test methods cover the chemical analyses usually required for sodium chloride.1.2 The analytical procedures appear in the following sections:  SectionSample Preparation  5 to  9Moisture 10 to 17Water Insolubles 18 to 26Calcium and Magnesium 27 to 34Sulfate 35 to 42Reporting of Analyses 43 to 451.3 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 Review the current safety data sheets (SDS) for detailed information concerning toxicity, first-aid procedures, handling, and safety precautions.1.6 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.