Siena burnt
$3.50
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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% ironLightfastness: 8Alkali resistance: 5Lime stability: 5Acid resistance: 5Color index: PR 101Suitability Acrylic, Fresco, Ceramics, Oil, Tempera, Watercolor/Gouache, Silicate binder, Cement/PlasterColor: brownish redGlazing
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