Burnt sienna

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Burnt sienna


Burnt sienna at 200x

A dark reddish brown iron oxide pigment prepared by burning Raw sienna. Burnt sienna is a permanent pigment. Named for the south Italian city of Siena that produced fine grades of the pigment, it was originally called Italian earth.

Synonyms and Related Terms

Pigment Brown 6; CI 77491; Gebrannte Siena (Deut.); siena tostado (Esp.); terre de Sienne brûlée (Fr.); sienna psimeni (Gr.); terra di Siena bruciata (It.); bruine oker (Ned.); gebrande siena (Ned.); terra de Siena queimada (Port.); Caledonian brown; burnt ocher; mineral brown; Turkey umber; Italian earth;

Burnt sienna at 200x , polarized light
Burnt sienna at 500x


No significant hazards.

Physical and Chemical Properties

Density 3.56 g/ml
Refractive Index 1.85 (var.)

Resources and Citations

  • R. J. Gettens, G.L. Stout, Painting Materials, A Short Encyclopaedia, Dover Publications, New York, 1966 Comment: density = 3.56 and ref. index = 1.85
  • Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
  • Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996
  • G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 557
  • Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979
  • Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
  • The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998

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