Hydroxyethylidene diphosphonic acid, a raw material for water treatment
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How is the chloride ion content in hydroxyethylidene diphosphonic acid determined? I find it difficult to understand the national standard GB/T 26324-2010
Potentiometric titration. If you can’t understand it, you need to learn the basic knowledge of potentiometric titration*. In this titration process, the volume of silver nitrate consumed is recorded while simultaneously monitoring the changes in potential. The titration endpoint is determined as the volume at which there is a potential jump, and it is calculated. If the product has good stability and does not fail to meet the requirements, it may also be possible to use potassium chromate as an indicator to determine the endpoint. However, since the national standard specifies potentiometric titration, it is better to follow the standard procedures.
It mainly depends on your required detection accuracy. If you’re using this product, a slightly lower detection accuracy may not be a big issue. However, if you’re manufacturing this product, it must meet the specified standards. It also ensures accurate detection.