Iodine number

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A measure of the degree of unsaturation of a Fat or Oil. The iodine number is the number of grams of Iodine absorbed by 100 grams of a fat or oil. A drying oil will have a high iodine number, such as 120, thus indicating a high degree of unsaturation. Materials with low iodine numbers, such as a Wax or Nondrying oil, will not oxidize rapidly.

Synonyms and Related Terms

Jodzahl (Deut.); iodine value

Resources and Citations

  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • R. J. Gettens, G.L. Stout, Painting Materials, A Short Encyclopaedia, Dover Publications, New York, 1966
  • G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971
  • Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)