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Designation: C 25 – 99 - Chemical Analysis of Limestone, Quicklime, and Hydrated Lime1

This standard is issued under the fixed designation C 25; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense. | Designation C 25 99 Standard Test Methods for Chemical Analysis of Limestone Quicklime and Hydrated Lime1 This standard is issued under the fixed d ii r atic n c 25 the number immediately following the cles ignation indicates the year of originaa adoption or in the case of revision the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon e indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense. 1. Scope 1.1 These test methods cover the chemical analysis of high-calcium and dolomitic limestone quicklime and hydrated lime. These test methods are classi ed as either standard preferred or alternative optional . 1.2 The standard test methods are those that employ classical gravimetric or volumetric analytical procedures and are typically those required for referee analyses where chemical speci ínì n rcquircmcnts arc an crscntiir part of cc o Iì í c I ìu I agreement between buyer and seller. 1.3 Alternative or optional test methods are provided for those who wish to use procedures shorter or more convenient than the standard methods for the routine determinations of certain constituents. Optional test methods may sometimes be preferred to the standard test methods but frequently the use of modern and expensive instrumentation is indicated which may not be accessible to everyone. Therefore the use of these test methods must be left to the discretion of each laboratory. 1.4 The analytical procedures appear in the following order Section Aluminum Oxide 15 Available Lime Index 28 Calcium and Magnesium Oxide Alternative EDTA Titration Method 31 Calcium Carbonate Equivalent 33 Calcium Oxide Gravimetric Method 16 Volumetric Method 17 Carbon Dioxide by Standard Method 22 Combined Oxides of Iron and Aluminum 12 Ferrous Iron Appendix X5 Free Calcium Oxide Appendix X6 Free Moisture in Hydrated Lime 21 Free Moisture in Limestone 20 .