R&F Pigment Stick - Burnt Umber, 38 ml
Deep reddish chocolate brown. Only the basic traditional materials are used: natural wax(beeswax and plant wax), linseed oil, and pigment, resulting in an oil stick with a lipstick-soft consistency.
- Pigment Composition: PBr7-Burnt Umber
- Dimension: 38 ml. stick measuring 5" x 3/4" diameter.
- 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 caused by 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 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 terra dombra, meaning earth of shadow/shade, due to its original extraction from Umbria, Italy. It has been used as a pigment since prehistoric times. Currently, the finest umber comes from Cyprus.
