Burnt sienna
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Description
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 7; 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;
Note: All iron oxide pigments made after 2001 are designated Pigment Brown 6 (not 7)
Risks
No significant hazards.
Physical and Chemical Properties
- Color = dark valued, moderately dull earth orange
- 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
- Art and Architecture Thesaurus Online, https://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
- CHSOS: Spectra (Reflectance, XRF, Raman, FTIR) for Burnt sienna
- The Color of Art Pigment Database: Pigment Brown