Raw Sienna

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Art Spectrum® Dry Ground Pigment Raw Sienna.

Raw Sienna is a natural iron oxide pigment that was used in prehistoric cave art. The name comes from Siena in Italy where deposits were mined since Roman times.

A semi-transparent natural inorganic pigment with excellent lightfast properties.

Series Colour Index Chemical Description Classification Opacity ASTM
1 PBr7 Natural Iron Oxide Natural Inorganic Semi Transparent ASTMI

ASTM Approved Permanent Colours American Society for Testing and Materials, conforming to standard D4302-90.