【国外标准】 Standard Test Methods of Sampling and Chemical Analysis of Alkaline Detergents

AbstractThese 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.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:  SectionsCaustic Soda:   Sampling 5 Total Alkalinity as Sodium Oxide (Na2O) 6 – 8 Sodium Hydroxide (NaOH)  9 – 11 Carbonate as Sodium Carbonate (Na2CO3) 12 Carbon Dioxide (CO2) by the Evolution Method 13 – 16Soda Ash:   Sampling 17 Matter Volatile at 150 °C to 155 °C 18 and 19 Total Alkalinity as Sodium Carbonate (Na2CO3 ) 20 – 22 Sodium Bicarbonate (NaHCO3) 23 – 25 Sodium Bicarbonate (NaHCO3) by Potentiometric Titration 26 – 28 Matter Insoluble in Water 29 and 30 Apparent Density 31 and 32Modified Soda (Sequicarbonate Type):   Sampling 33 Total Alkalinity as Sodium Oxide (Na2O) 34 – 36 Sodium Bicarbonate (NaHCO3) and Sodium Carbonate (Na2CO3) 37 – 39 Matter Insoluble in Water 40Sodium Bicarbonate:   Sampling 41 Sodium Bicarbonate, Sodium Carbonate, and Free Moisture 42 – 45 Matter Insoluble in Water 46Sodium Metasilicate, Sodium Sesquisilicate and Sodium Orthosil-   icate:   Sampling 47 Total Alkalinity as Sodium Oxide (Na2O) 48 – 50 Total Silica as SiO2 51 – 53 Sodium Metasilicate (Na2SiO3·5H2O) 54 Sodium Sesquisilicate (3Na2O·2SiO2·11H2O) 55 Matter Insoluble in Water 56 and 57 Loss on Ignition of Sodium Sesquisilicate (3Na2O·2SiO2 ·11H2O) 58 and 59 Sodium Orthosilicate (Na4SiO4) 60Trisodium Phosphate:   Sampling 61 Trisodium Phosphate (Na3PO4) Content and Phosphorus   Pentoxide (P2O5)  62 – 64 Trisodium Phosphate Calculated as Na3PO4·12H2O, Na3PO4·   H2O, Na3PO4, and as P2O5  65 – 68 Total Alkalinity as Sodium Oxide (Na2O) 69 – 71 Matter Insoluble in Water 72 and 73Tetrasodium Pyrophosphate:   Sampling 74 Tetrasodium Pyrophosphate  (Na4P2O7)  75 – 79 Matter Insoluble in Water 80 and 81 Loss on Ignition 82 and 83Borax:   Sampling 84 Total Borate and Excess Alkalinity or Acidity 85 – 87 Matter Insoluble in Water 88 and 89Sodium Triphosphate:   Sampling 90 Tritratable Na2O 91 – 94 Total P2O5:    Preferred Method 95 – 97  Alternative Method  98 – 101  pH Titration 102 – 107 Quantitative Separation and Measurement of Various Phosphates:    Reverse-Flow Ion-Exchange Chromatography (Preferred    Method)  108 – 119  Paper Chromatographic Method 120 – 127 pH of 1 percent Solution 128 Turbidity 129 Temperature Rise 130 – 134 Sulfate 135 – 137 Ignition Loss 140 and 141 Matter Insoluble in Water 142 – 144 Particle Size 145 Orthophosphate 146 – 1511.3 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. Material Safety Data Sheets are available for reagents and materials. Review them for hazards prior to usage.1.5 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.