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Measuring the Sulfuric Acid Concentration with an Anton Paar Abbemat Refractometer

The quality and/or concentration of sulfuric acid need to be verified after production or subsequent processing. Anton Paar Abbemat refractometers can be used to easily measure concentrated and diluted sulfuric acid solutions (H2SO4).

1 Industrial Areas

Sulfuric acid (acc. to IUPAC1: dihydrogen sulfate) is a strong mineral acid that is highly soluble in water. It is an important chemical used in the production process of hundreds of compounds.

The largest volume of the produced sulfuric acid is used to produce fertilizers , calcium dihydrogenphosphate and the ammonium phosphates.

Conventionally, sulfuric acid concentration was determined by titration, which is a time-consuming and labor-intensive process. Additionally, sulfuric acid’s hygroscopic behavior can lead to changes in concentration over the time taken to complete titration.

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