ASTM E291-01
Historical Standard: ASTM E291-01 Standard Test Methods for Chemical Analysis of Caustic Soda and Caustic Potash (Sodium Hydroxide and Potassium Hydroxide)
SUPERSEDED (see Active link, below)
ASTM E291
1. Scope
1.1 These test methods cover only the analyses usually required on the following commercial products:
1.1.1 Caustic soda (sodium hydroxide), 50 and 73 % liquors; anhydrous (solid, flake, ground, or powdered), and
1.1.2 Caustic potash (potassium hydroxide), 45 % liquor; anhydrous (solid, flake, ground, or powdered).
1.2 The analytical procedures appear in the following order:
Alkalinity (Total), Titrimetric (for 50 to 100 %NaOH and 45 to 100 % KOH) | 8 to 14 |
Carbonate, Gas-Volumetric (0.001 g CO 2 , min) | 15 to 24 |
Carbonate, Gravimetric (0.001 g CO 2 , min) | 25 to 33 |
Chloride, Titrimetric, (0.001 g Cl , min) | 34 to 40 |
Chloride, Potentiometric Titration (0.3 to 1.2 %) | 41 to 47 |
Chloride, Ion Selective Electrode (0.6 to 120 ppm) | 48 to 55 |
Iron, Photometric (0.005 mg Fe, min) | 56 to 64 |
Sulfate, Gravimetric, (0.002 g SO 3 , min) | 65 to 71 |
Keywords | 72 |
1.3 The values stated in inch-pound units are to be regarded as the standard. The values in parentheses are provided for information only.
1.4 Review the current Material Safety Data Sheet (MSDS) for detailed information concerning toxicity, first-aid procedures, handling, and safety precautions.
1.5 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 use. Specific hazard statements are given in Section 6.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
D1193 Specification for Reagent Water
E60 Practice for Analysis of Metals, Ores, and Related Materials by Spectrophotometry
E180 Practice for Determining the Precision of ASTM Methods for Analysis and Testing of Industrial and Specialty Chemicals
E200 Practice for Preparation, Standardization, and Storage of Standard and Reagent Solutions for Chemical Analysis
Keywords
caustic soda; caustic potash; chloride; iron; potassium carbonate; potassium hydroxide; sodium carbonate; sodium hydroxide; sulfate; total alkalinity; Chemical analysis--chemicals; Chloride analysis--cleaning agents/detergents; Detergent materials/systems; Iron content--chemicals; Potassium carbonate content; Sodium carbonate content; Sodium hydroxide; Sulfate content;
ICS Code
ICS Number Code 71.060.40 (Bases)
DOI: 10.1520/E0291-01
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