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 применения1.1 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
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 – 16
Soda 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 32
Modified 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
40
Sodium Bicarbonate:
Sampling
41
Sodium Bicarbonate, Sodium Carbonate, and Free Moisture
42 – 45
Matter Insoluble in Water
46
Sodium 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)
60
Trisodium 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 73
Tetrasodium Pyrophosphate:
Sampling
74
Tetrasodium Pyrophosphate
(Na4P2O7)
75 – 79
Matter Insoluble in Water
80 and 81
Loss on Ignition
82 and 83
Borax:
Sampling
84
Total Borate and Excess Alkalinity or Acidity
85 – 87
Matter Insoluble in Water
88 and 89
Sodium 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 – 151
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 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.