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Significance and Use
The accuracy of many analytical measurements is dependent upon the manner in which the standard solutions are prepared and stored, and the accuracy with which they are standardized. Combining the methods recommended for the preparation and handling of such solutions into one practice eliminates the necessity for covering such details in all of the methods wherein the solutions are used.
1.1 This practice covers procedures for the preparation, standardization, and storage of the standard volumetric solutions and reagent testing solutions commonly used in chemical analysis.
1.2 The information in this practice is arranged as follows:
|Significance and Use||4|
|Concentration of solutions||9|
|Mixing of solutions||10|
|Storage of solutions||11|
|Preparation and standardization of solutions||12|
|Precision and Bias||13|
|Sodium hydroxide solution, 0.02 to 1.0 meq/mL (N)||14 to 19|
|Hydrochloric acid, 0.02 to 1.0 meq/mL (N)||20 to 28|
|Sulfuric acid, 0.02 to 1.0 meq/mL (N)||29 to 33|
|Hydrochloric acid, special 1 meq/mL (N)||34 to 38|
|Sulfuric acid, special 1meq/mL (N)||39 to 43|
|Silver nitrate solution, 0.1 meq/mL (N)||44 to 48|
|Ammonium thiocyanate solution, 0.1 meq/mL (N)||49 to 53|
|Iodine solution, 0.1 meq/mL (N)||54 to 58|
|Sodium thiosulfate solution, 0.1 meq/mL (N)||59 to 63|
|Potassium permanganate solution, 0.1 meq/mL (N)||64 to 68|
|Potassium dichromate solution, 0.1 meq/mL(N)||69 to 73|
|Methanolic sodium hydroxide solution, 0.5 meq/mL (N)||74 to 79|
|Ceric sulfate solution, 0.1 meq/mL (N)||80 to 84|
|Acetous perchloric acid, 0.1 meq/mL (N)||85 to 89|
|Disodium ethylenediaminetetraacetate solution, 0.05 mol/L(M)||90 to 94|
|Standard ion solutions||95|
|Nonstandardized reagent solutions and indicator solutions||96|
1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.
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 and health practices and determine the applicability of regulatory limitations prior to use. Specific warning statements are given throughout this practice.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D1193 Specification for Reagent Water
E50 Practices for Apparatus, Reagents, and Safety Considerations for Chemical Analysis of Metals, Ores, and Related Materials
E180 Practice for Determining the Precision of ASTM Methods for Analysis and Testing of Industrial and Specialty Chemicals
E203 Test Method for Water Using Volumetric Karl Fischer Titration
E694 Specification for Laboratory Glass Volumetric Apparatus
Other DocumentReagentChemicals, American Chemical Society Specifications (ACS) Available from American Chemical Society, 1155 16th St., N.W., Washington, DC 20036.
ICS Number Code 71.040.30 (Chemical reagents)
UNSPSC Code 41116105(Chemistry reagents or solutions)