Naphthenic acids

{
  "id": "MLC-T-CHM-007766",
  "term": "Naphthenic acids",
  "field": "Chemistry",
  "definition": "A complex mixture of carboxylic acids containing at least one cycloalkane ring, such as cyclopentane or cyclohexane, to which a carboxyl group is attached. These compounds are found naturally in crude oil and are responsible for its acidity. Their presence contributes to corrosion in oil refinery equipment, a phenomenon known as naphthenic acid corrosion, which becomes pronounced at temperatures above 220 °C.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "carboxylic acids",
    "naphthenes"
  ],
  "references": [
    "PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1350 (https://doi.org/10.1351/pac199567081307)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/naphthenic-acids/"
}