The Role of Chemistry in History

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The Extraction of Linseed Oil

April 27th, 2008 · No Comments ·

Introduction  The History Tempera Paints vs. Oil Paints Drying Oils The Extraction of Linseed Oil Linolenic Acid So What? Oil Painting and History Bibliography


  • Linseed oil is pressed from the seeds of the flax plant, Linum usitatissum, which is grown in temperate and cold climates such as Argentina, India, Canada, Russia,. Morocco, China, and the British Isles
  • Hot-pressed linseed oil: use of extreme heat and pressure to extract the oil from the flax seeds
  • Cold-pressed linseed oil: less pressure and heat used than in the hot-pressing technique; less oil is produced but the oil produced is of a higher quality
  • Refining Process: after the oil is extracted, there are still impurities; the oil is mixed together with sulfuric acid and water to remove most of the impurities and improves color
  • Other types of refined linseed oil: Varnish linseed oil, Stand oil, Bodied oil, Sun-refined oil

Tags: Alpha-linolenic Acid (Linseed Oil)