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Ion-Chromatographic Analysis of the Composition of Low-Freezing Coolants

Low-freezing coolants for automotive engines are analyzed before and after oxidation. It is shown that ion chromatography can be used to monitor the composition change of ethylene-glycol-based coolants and to formulate recommendations for optimizing the method based on current specifications for automotive engine performance. Results for the corrosive effects of coolants on various metals at elevated temperatures are reported. The corrosion depends on the amount of ethylene-glycol oxidation products and the nature of the corrosion inhibitors.

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References

  1. ASTM D 3306-03, Standard Specification for Glycol Base Engine Coolant for Automobile and Light-Duty Service.

  2. ASTM D 6210-03, Standard Specification for Fully-Formulated Glycol Base Engine Coolant for Heavy-Duty Engines.

  3. ASTM D 5827-95 (Reapproved 2002), Standard Test Method for Analysis of Engine Coolant for Chloride and Other Anions by Ion Chromatography.

  4. ASTM D 4327-03, Standard Test Method for Anions in Water by Chemically Suppressed Ion Chromatography.

  5. Application Note 185. Determination of Trace Organic Acids and Inorganic Anions in Boric Acid-Treated Power Plant Waters Using an Automated Reagent-Free Ion Chromatography System, Dionex Corporation, Sunnyvale, CA.

  6. Application Note 123. Determination of Inorganic Anions and Organic Acids in Fermentation Broths, Dionex Corporation, Sunnyvale, CA.

  7. GOST R 52181-2003. Potable water. Determination of Anions by Ion Chromatography and Capillary Electrophoresis.

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Correspondence to G. T. Vigant.

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Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 6, pp. 33 – 36, November – December, 2015.

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Vigant, G.T., Vizhankov, E.M. Ion-Chromatographic Analysis of the Composition of Low-Freezing Coolants. Chem Technol Fuels Oils 51, 598–604 (2016). https://doi.org/10.1007/s10553-016-0645-x

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  • DOI: https://doi.org/10.1007/s10553-016-0645-x

Keywords

  • coolants
  • ethylene glycol
  • cooling system
  • ion chromatography
  • corrosive effect on metals