R&F Oil Pigment Stick, Burnt Umber 38ml

R&F Pigment Stick - Burnt Umber, 40 ml

Deep reddish chocolate brown

• Pigment Composition: PBr7-Burnt Umber
• Paint Lines: Encaustic Pigment Stick
• Opacity: Semi-Transparent
• Pigment Stick Drying Rate: Fast
• Classification: Natural Inorganic
• Chemical Composition: Natural earth, calcined
• Safety Information: Conforms to ASTM D-4236

Pigment Name: PBr7-Burnt Umber

Classification: Natural Inorganic, Earth

Chemical Composition: Iron oxides with manganese silicates or dioxide

Properties

Burnt Umber is a more intense reddish brown pigment that results from heating Raw Umber's clay pigment. It has medium to excellent tinting strength and high opacity, and it is quick drying in oil form. Burnt Umber is somewhat more transparent than Raw Umber. It has excellent colour properties and can create a variety of subtle, clear tints when mixed with white. It can tend towards chalkiness in dark mixes in oil form, but overall, it mixes well with other colours. To create a black colour in oil form, mix Burnt Umber with Phthalo Blue or Ultramarine. Mix it with Ultramarine or Payne's Gray to achieve a similar colour in watercolour form.

Permanence

Burnt Umber has good permanence.

Toxicity

Burnt Umber itself is considered non-toxic. If contaminated by manganese compounds, it may be highly toxic if inhaled and moderately toxic if ingested.

History

This pigment comes from the Latin word umbra, meaning shadow or shade. Its full name is listed as terra dombra, meaning earth of shadow/shade, due to its original extraction from the area of Umbria, Italy. It has been used as a pigment since prehistoric times. Currently, the finest umber comes from Cyprus.