ASTM-D501 › Standard Test Methods of Sampling and Chemical Analysis of Alkaline Detergents

ASTM-D501 - 2003 R23 EDITION - CURRENT
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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.

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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:

Orthophosphate
Sections
Caustic 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 Titration
Matter Insoluble in Water
Apparent 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 Moisture
Matter Insoluble in Water
Sodium Metasilicate, Sodium Sesquisilicate and Sodium Orthosil- icate:
Sampling
Total Alkalinity as Sodium Oxide (Na2O)
Total Silica as SiO2
Sodium Metasilicate (Na2SiO35H 2O)
Sodium Sesquisilicate (3Na2O2SiO211H 2O)
Matter Insoluble in Water
Loss 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 P2O5
Total Alkalinity as Sodium Oxide (Na2O)
Matter Insoluble in Water
Tetrasodium Pyrophosphate:
Sampling
Tetrasodium Pyrophosphate(Na4P 2O7)
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:
Preferred Method
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

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.

Keywords

alkaline builder; borax; caustic soda; detergent; ignition loss; insoluble; particle size; phosphate; silicate; soda ash; turbidity; ICS Number Code 71.100.40 (Surface active agents)

To find similar documents by ASTM Volume:

15.04 (Soaps and Other Detergents; Polishes; Leather; Resilient Floor Coverings)

To find similar documents by classification:

71.100.40 (Surface active agents)

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Document Number

ASTM-D0501-03R23

Revision Level

2003 R23 EDITION

Status

Current

Modification Type

Reinstated

Publication Date

July 26, 2023

Document Type

Test Method

Page Count

27 pages

Committee Number

D12.12