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Siena burnt

Siena burnt

Regular price $3.50 USD
Regular price Sale price $3.50 USD
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Siena burnt natural pigment powder

Sienna burnt is made from natural Siena, which is subjected to heat treatment. At a temperature of 1300 degrees, iron oxide, which is more than 50 percent in sienna, begins to turn red.

Chemical Description: Clay rock with 50% iron

Lightfastness: 8

Alkali resistance: 5

Lime stability: 5

Acid resistance: 5

Color index: PR 101

Suitability Acrylic, Fresco, Ceramics, Oil, Tempera, Watercolor/Gouache, Silicate binder, Cement/Plaster

Color: brownish red


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