Iron oxide red

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hematite

Contents

Description

Iron oxides produce a wide variety of red shades ranging from light, bright red to a deep purplish red. They can be natural, earth pigments (hematite, Indian red, Venetian red) or synthetically prepared pigments (light red). All iron oxide reds are stable, permanent pigments with good tinting strength and are the primary colorant in ochers and siennas.

Synonyms and Related Terms

Pigment Red 101; CI 77491; red iron oxide; red ocher; red ochre (Br.); pozzuolana (It.); terra di Pozzuoli (It.); hématite (Fr.); oxyde fer rouge (Fr.); bengara (Jap.); benigara (Jap.); Roter Ocker (Deut.); Hämatit (Deut.); hematita (Port.); oxeidio toy sidiroy (Gr.); kokkino (Gr.); aimatitis (Gr.); ematite (It.); ijzeroxide rood (Ned.); vermelho de óxido de ferro (Port.); haematite; hematite; Indian red; caput mortuum; rouge; Persian red; Tuscan red; Pompeian red; light red; Venetian red; terra Pozzuoli; English red; angel red

Iron oxide red
Composition Fe2O3
Mohs Hardness 5.5 - 6.5
Density 4.2-5.3
Refractive Index 2.78; 3.01

Raman

RedochreUCL.jpg

Raman

Hematiteitaly3.jpg

FTIR

MFA- Red oxide, Spanish, natural.jpg

XRD

PIG72.jpg

SEM

Fkhaemsem.jpg

EDS

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Comparisons

Properties of Common Abrasives


Additional Images


Sources Checked for Data in Record

  • The Dictionary of Art, Grove's Dictionaries Inc., New York, 1996 Comment: "Pigments"
  • R. J. Gettens, G.L. Stout, Painting Materials, A Short Encyclopaedia, Dover Publications, New York, 1966
  • R.Feller, M.Curran, C.Bailie, 'Identification of Traditional Organic Colorants Employed in Japanese Prints and Determination of their Rates of Fading', Japanese Woodblock Prints, Allen Memorial Art Museum, Oberlin College, Oberlin, 1984
  • Thomas Gregory, The Condensed Chemical Dictionary, Reinhold Publishing, New York, 3rd ed., 1942
  • Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979

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