Overview
ISO 2482:1973 is an International Standard developed by the International Organization for Standardization (ISO) that specifies complexometric titration methods for determining calcium and magnesium contents in sodium chloride for industrial use. Utilizing EDTA (ethylenediaminetetraacetic acid) as the titrant and specific colorimetric indicators, this standard addresses accurate quantification of water-soluble calcium and magnesium ions, essential for quality control in industrial salt applications. The method applies to calcium and magnesium concentrations above 0.001% by mass and can be adapted for samples prepared in acidic media.
Key Topics
Applications
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Industrial Sodium Chloride Quality Control
Ensures compliance with purity specifications by detecting calcium and magnesium impurities that can affect salt quality, processing, and end-use performance.
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Chemical and Pharmaceutical Industries
Provides a standardized analytical technique for salt manufacturers aiming to control contaminant levels critical for chemical reactions and pharmaceutical formulations.
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Water Treatment and Environmental Monitoring
Enables quality assessment of sodium chloride used in water conditioning, ensuring that calcium and magnesium concentrations meet required thresholds.
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Research and Development
Offers a reliable method to quantify calcium and magnesium ions in experimental sodium chloride samples, facilitating product formulation and process optimization.
Related Standards
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ISO 2479:1973
Specifies determination of insoluble matter in water or acid and preparation of principal solutions, referenced for sample preparation in ISO 2482.
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ISO 9001 Series
Quality management guidelines supporting analytical and testing laboratories in maintaining process control and result accuracy.
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ISO/IEC 17025
Specifies general requirements for the competence of testing and calibration laboratories performing procedures like those in ISO 2482.
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ASTM E1209 - 17
Standard test method for calcium, magnesium, and iron in salt by EDTA titration, which complements ISO 2482 procedures in similar contexts.
Keywords: ISO 2482, sodium chloride analysis, calcium determination, magnesium content, EDTA complexometric method, industrial salt purity, chemical analysis, volumetric titration, GBHA indicator, mordant black 11, quality control sodium chloride, water-soluble ions detection.