Реферат

These test methods cover procedures for the sampling and chemical analysis of inorganic alkaline detergents. These detergents include caustic soda, soda ash, modified soda (sequicarbonate type), sodium bicarbonate, sodium metasilicate, trisodium phosphate, tetrasodium pyrophosphate, borax, and sodium triphosphate. Different tests shall be conducted in order to determine the following properties of the detergents: total alkalinity, matter insoluble in water content, apparent density, ignition loss, pH level, turbidity, temperature rise, and particle size. Chemical analysis of the samples shall be performed by using either reverse-flow ion-exchange chromatography or paper chromatography.

Область применения

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:

Orthophosphate SectionsCaustic Soda:Sampling Total Alkalinity as Sodium 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 155C Total Alkalinity as Sodium Carbonate (Na2CO3)Sodium Bicarbonate (NaHCO3)Sodium Bicarbonate (NaHCO3) by Potentiometric TitrationMatter Insoluble in WaterApparent Density Modified Soda (Sequicarbonate Type):Sampling Total Alkalinity as Sodium Oxide (Na2O)Sodium Bicarbonate (NaHCO3) and Sodium Carbonate (Na 2CO3)Matter Insoluble in Water Sodium Bicarbonate:Sampling Sodium Bicarbonate, Sodium Carbonate, and Free MoistureMatter Insoluble in WaterSodium Metasilicate, Sodium Sesquisilicate and Sodium Orthosil- icate:Sampling Total Alkalinity as Sodium Oxide (Na2O) Total Silica as SiO2Sodium Metasilicate (Na2SiO35H 2O)Sodium Sesquisilicate (3Na2O2SiO211H 2O) Matter Insoluble in WaterLoss on Ignition of Sodium Sesquisilicate (3Na2O2SiO 2 11H2O)Sodium Orthosilicate (Na4SiO4)Trisodium Phosphate:Sampling Trisodium Phosphate (Na3PO4) Content and Phosphorus Pentoxide (P2O5)Trisodium Phosphate Calculated as Na3PO412H 2O, Na3PO4 H2O, Na3PO4, and as P2O5Total Alkalinity as Sodium Oxide (Na2O) Matter Insoluble in Water Tetrasodium Pyrophosphate:Sampling Tetrasodium Pyrophosphate(Na4P 2O7)Matter Insoluble in WaterLoss on Ignition Borax:Sampling Total Borate and Excess Alkalinity or Acidity Matter Insoluble in Water Sodium Triphosphate:Sampling Tritratable Na2O Total P2O5:Preferred Method Alternative Method pH Titration Quantitative Separation and Measurement of Various Phosphates:Reverse-Flow Ion-Exchange Chromatography (Preferred Method)Paper Chromatographic MethodpH of 1 percent Solution Turbidity Temperature Rise Sulfate Ignition Loss Matter Insoluble in Water Particle Size

1.3 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 useMaterial Safety Data Sheets are available for reagents and materials. Review them for hazards prior to usage.