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ASTM D512-23

Current Revision

Standard Test Methods for Chloride Ion In Water

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1.1 These test methods cover the determination of chloride ion in water, wastewater (Test Method C only), and brines. The following three test methods are included:

 

Sections

Test Method A (Mercurimetric Titration)

7 to14

Test Method B (Silver Nitrate Titration)

15 to 21

Test Method C (Ion-Selective Electrode Method)

22 to 29

1.2 Test Methods A, B, and C were validated under Practice D2777 – 77, and only Test Method B conforms also to Practice D2777 – 86. Refer to Sections 14, 21, and 29 for further information.

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. For a specific hazard statement, see 26.1.1.

1.5 A former colorimetric test method was discontinued. Refer to Appendix X1 for historical information.

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.


4.1 Chloride ion is under regulation in waste water, and must, therefore, be measured accurately. It is highly detrimental to high-pressure boiler systems and to stainless steel, so monitoring is essential for prevention of damage. Chloride analysis is widely used as a tool for estimating the cycles of concentration, such as in cooling tower applications. Processing waters and pickling solutions used in the food processing industries also require dependable methods of analysis for chloride.

SDO ASTM: ASTM International
Document Number D512
Publication Date April 1, 2023
Language en - English
Page Count 8
Revision Level 23
Supercedes
Committee D19.05
Publish Date Document Id Type View
April 1, 2023 D0512-23 Revision
June 15, 2012 D0512-12 Revision
Sept. 15, 2010 D0512-10 Revision
July 1, 2004 D0512-04 Revision
June 10, 1999 D0512-89R99 Reaffirmation