Quimica

Designation: D501 – 03 (Reapproved 2009)

Standard Test Methods of

Sampling and Chemical Analysis of Alkaline Detergents1
This standard is issued under the fixed designation D501; 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. Asuperscript epsilon (´) 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 procedures for the sampling and chemical analysis of inorganic alkaline detergents. 1.2 The procedures appear in the following order:
Sections Caustic Soda: Sampling Total Alkalinity asSodium Oxide (Na2O) Sodium Hydroxide (NaOH) Carbonate as Sodium Carbonate (Na2CO3) Carbon Dioxide (CO2) by the Evolution Method Soda Ash: Sampling Matter Volatile at 150 to 155°C Total Alkalinity as Sodium Carbonate (Na2CO3) Sodium Bicarbonate (NaHCO3) Sodium Bicarbonate (NaHCO3) by Potentiometric Titration Matter Insoluble in Water Apparent Density Modified Soda (Sequicarbonate Type): SamplingTotal Alkalinity as Sodium Oxide (Na2O) Sodium Bicarbonate (NaHCO3) and Sodium Carbonate (Na2CO3) Matter Insoluble in Water Sodium Bicarbonate: Sampling Sodium Bicarbonate, Sodium Carbonate, and Free Moisture Matter Insoluble in Water Sodium Metasilicate, Sodium Sesquisilicate and Sodium Orthosilicate: Sampling Total Alkalinity as Sodium Oxide (Na2O) Total Silica as SiO2 Sodium Metasilicate(Na2SiO3·5H2O) Sodium Sesquisilicate (3Na2O·2SiO2·11H2O) Matter Insoluble in Water Loss on Ignition of Sodium Sesquisilicate (3Na2O·2SiO2·11H2O) Sodium Orthosilicate (Na4SiO4) Trisodium Phosphate: Sampling Trisodium Phosphate (Na3PO4) Content and Phosphorus Pentoxide (P2O5) Trisodium Phosphate Calculated as Na3PO4·12H2O, Na3PO4· H2O, Na3PO4, and as P2O5 Total Alkalinity as Sodium Oxide (Na2O) MatterInsoluble in Water 5 6-8 9-11 12 13-16 17 18 and 19 20-22 23-25 26-28 29 and 30 31 and 32 33 34-36 37-39 40 41 42-45 46

Sections Tetrasodium Pyrophosphate: Sampling Tetrasodium Pyrophosphate (Na4P2O7) Matter Insoluble in Water Loss on Ignition Borax: Sampling Total Borate and Excess Alkalinity or Acidity Matter Insoluble in Water Sodium Triphosphate: Sampling Tritratable Na2O Total P2O5: PreferredMethod Alternative Method pH Titration Quantitative Separation and Measurement of Various Phosphates: Reverse-Flow Ion-Exchange Chromatography (Preferred Method) Paper Chromatographic Method pH of 1 percent Solution Turbidity Temperature Rise Sulfate Ignition Loss Matter Insoluble in Water Particle Size Orthophosphate 74 75-79 80 and 81 82 and 83 84 85-87 88 and 89 90 91-94 95-97 98-101 102-107108-119 120-127 128 129 130-134 135-137 140 and 141 142-144 145 146-151

47 48-50 51-53 54 55 56 and 57 58 and 59 60 61 62-64 65-68 69-71 72 and 73

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 theresponsibility 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. 2. Referenced Documents 2.1 ASTM Standards:2 D459 Terminology Relating to Soaps and Other Detergents

1 These test methodsare under the jurisdiction of ASTM Committee D12 on Soaps and Other Detergents and are the direct responsibility of Subcommittee D12.12 on Analysis and Specifications of Soaps, Synthetics, Detergents and their Components. Current edition approved Oct. 1, 2009. Published December 2009. Originally approved in 1938. Discontinued August 2001 and reinstated as D501 – 03. Last previous edition approved...